Java
*File chua ma nguon java sau khi duoc bien dich co duoi la gi ?…class
*Java platform gom may thanh phan?…2
*Java Virtual Machine la gi?…La mot thanh phan cua Java platform dung de doc ma bytecode trong file .class
*Java chay tren he dieu hanh nao sau day:…Tat ca cac dap an deu dung.
*API la gi?…La thu vien chua cac thanh phan phan mem tao san cung cap cac chuc nang cho chuong trinh Java.”
*Ngon ngu lap trinh Java cung cap cac tinh nang nao sau day?”…Tat ca dap an tren
*Co bao nhieu cach viet chu thich trong Java?”… “3″
*Thu tu cac tu khoa public va static khi khai bao nhu the nao?”…Thu tu bat ky nhung thong thuong public dung truoc”
*Cau lenh khai bao chuan cho phuong thuc main nhu the nao?”…public static void main(String[] a) {}”
*Cau nao sau day la sai?”… “/* chu thich”
*Khi bien dich gap loi Exception in thread main java.lang.NoClassDefFoundError: myprogram. *Loi nay co nghia gi?”… “Duong dan chuong trinh sai.”
*Doi tuong trong phan mem la gi?”…La cac doi tuong gom co 2 thuoc tinh truong du lieu va cac phuong thuc xu ly du lieu.”
*Chon cau tra loi dung nhat. Lop la gi?”…La ban thiet ke tu do tao ra cac doi tuong.”
*Cach dat ten nao sau day la sai?”…2word”
*Mot chuong trinh co bao nhieu phuong thuc main?”… “1″
*Mot lop trong Java co the co bao nhieu lop cha?”… “1″
*Mot lop trong Java co bao nhieu lop con?”… “Vo so”
*De khai bao lop Xedap1 ke thua lop Xedap phai lam nhu the nao?”…class Xedap1 extends Xedap {}”
*Chon cau tra loi dung nhat. Interface la gi?” … “La mot kieu tham chieu, tuong tu nhu class, chi co the chua hang gia tri, khai bao phuong thuc va kieu long.”
*De su dung giao dien Xedap cho lop Xedap1, ta lam the nao?”… “class Xedap1 implements Xedap {}”
*Co bao nhieu loai bien trong Java?”… “4″
*Truong du lieu la cac bien dang nao sau day?”…Bien dai dien va bien lop”
*Bien du lieu la cac bien dang nao sau day?”…Bien cuc bo va Tham so”
*Truong du lieu khong tinh (non-static) con goi la gi?”… “Bien dai dien”
*Truong du lieu tinh (static) con goi la gi?”… “Bien lop”
*Cach dat ten nao sau day la khong chinh xac?”… final”
*Co bao nhieu kieu du lieu co so trong Java?”… “8″
*Co bao nhieu kieu so nguyen trong Java?”…Tat ca deu sai.”
*Co bao nhieu kieu du lieu ky tu trong Java?”… “1″
*Khai niem phuong thuc start()?”… Moi phuong thuc thuc hien tac vu sau khi khoi tao phai chen len phuong thuc start. start() bat dau viec thuc thi cua applet.”
*Khoi lenh sau co ket qua bao nhieu?” & vbCrLf & _
“String greeting = “”Hello”";” & vbCrLf & _
“int k = greeting.length();” & vbCrLf & _
“System.out.print (k);”… “5″
*Lenh str.charat(n) co tac dung gi?”… Lay ky tu co so chi muc n trong chuoi k”
*Khoi lenh sau co ket qua bao nhieu khi thuc hien?” & vbCrLf & _
“char[] greet = new char[10];” & vbCrLf & _
“greet = “”Hello”";” & vbCrLf & _
“k = greet.length();” & vbCrLf & _
“System.out.print(k);”… Loi bien dich”
*Trong cac kieu gia tri so thuc dac biet duoi day, kieu nao la dung?”… Ca 3 gia tri tren”
*Trong Java, kieu char bieu dien bo ma code nao duoi day?”… UTF-16″
*Gia tri mac dinh cua mot bien kieu char la?”… u0000″
*Hai cau lenh sau dua ra ket qua s la bao nhieu” & vbCrLf & _
“String greetings = “”Hello”"; ” & vbCrLf & _
“String s = greetings.substring(0,3);”… “Hel”
*Hai cau lenh sau dua ra ket qua s la bao nhieu” & vbCrLf & _
“String greetings = “”Hello”" ” & vbCrLf & _
“String s = greetings.substring(0,3);”… Lenh sai”
*Trong hai cau lenh sau, lenh substring co tac dung gi?” & vbCrLf & _
“String greetings = “” Hello “”; ” & vbCrLf & _
“String s = greetings.substring(0,3);”… Lay cac ky tu tu vi tri chi muc 0 den vi tri chi muc 2 cua chuoi greetings va dua vao s”
*Kieu enum la gi?”… La kieu du lieu gom cac truong chua mot tap hop co dinh cac hang so.”
*Co bao nhieu loai quyen truy cap trong JAVA?”… “4″
*Neu khong khai bao tu khoa chi pham vi truy cap, pham vi truy cap cua doi tuong la gi?”… Co the truy cap tu cac lop trong cung package”
*Pham vi truy cap cua mot doi tuong khi khai bao private la gi?”… Chi co the truy cap tu cac phuong thuc khac trong class do.”
*Pham vi truy cap cua mot doi tuong khi duoc khai bao protected la gi?”…Co the duoc truy cap tu cac lop trong cung package va lop con nam trong package khac.”
*Pham vi truy cap cua mot doi tuong khi duoc khai bao public la gi?”…Co the duoc truy cap tu bat ky vi tri nao trong chuong trinh.”
*Cho khoi lenh nhu sau:
“switch (thu) {”
“ case 2:”
“ System.out.println(“”Van, Toan”");”
“ break;”
“ case 3:”
“ System.out.println(“”Hoa, Ly”");”
“ break;”
“ default:”
“ System.out.println(“”Ngay nghi”");”
“ break;”
“}”
@Khoi lenh tren se cho ket qua la bao nhieu neu ta nhap thu =1?”…Ngay nghi
*Cho khoi lenh nhu sau:”
“switch (thu) {”
“ case 2:”
“ System.out.println(“”Van, Toan”");”
“ break;”
“ case 3:”
“ System.out.println(“”Hoa, Ly”");”
“ break;”
“ default:”
“ System.out.println(“”Ngay nghi”");”
“ break;”
“}”
@Khoi lenh tren se cho ket qua la bao nhieu neu ta nhap thu =2? …Van, Toan
*Cho khoi lenh nhu sau:”
“switch (thu) {”
“ case 2:”
“ System.out.println(“”Van, Toan”");”
“ break;”
“ case 3:”
“ System.out.println(“”Hoa, Ly”");”
“ break;”
“ default:”
“ System.out.println(“”Ngay nghi”");”
“ break;”
“}”
@Khoi lenh tren se cho ket qua la bao nhieu neu ta nhap thu = 3? …Hoa, Ly
*Cho khoi lenh nhu sau:
“int[] mang = new int[10];”
“int s = 0;”
“int j = 0;”
“for ( int i : mang) {”
“ i = ++j;”
“ s += i;”
“}”
“System.out.println(“”S = “”+ s);”
@Khoi lenh thuc hien chuyen gi?…Nhap du lieu va tinh tong mang nguyen
*Cho khoi lenh nhu sau:
“int[] mang = new int[10];”
“int s = 0;”
“int j = 0;”
“for ( int i : mang) {”
“ i = ++j;”
“ s += i;”
“}”
“System.out.println(“”S = “”+ s);”
@Khi thuc hien khoi lenh trong hinh se cho ket qua la bao nhieu? …S=55
*Cho khoi lenh sau:
“int[] mang = new int[10];”
“int s;”
“int j = 0;”
“for ( int i : mang) {”
“ s = 0;”
“ i = ++j;”
“ s += i;”
“}”
“System.out.println(“”S = “”+ s);”
@Khi thuc hien khoi lenh tren se cho ket qua la bao nhieu? …Lenh sai
*Khoi lenh sau sai o dong nao?
“int[] mang = new int[10];”
“int s = 0;”
“int j = 0;” &
“for ( int i : mang) {”
“ i = ++j;”
“ s += i;”
“}”
“System.out.println(“”S = “”+ s); …Khong sai dong nao
*Khi chay khoi lenh se cho ket qua la bao nhieu?
“int i;”
“while (false) {”
“ i += 1;”
“}”
“System.out.println(“”i = “” + i); …Chuong trinh bao loi
*Khoi lenh sai o dong nao?”
“1.int i=0;”
“2.while (false) {”
“3. i += 1;”
“4.}”
“5.System.out.println(“”i = “” + i); …2
*Khi thuc hien khoi lenh se cho ket qua la bao nhieu?
“int i=0;
“do {”
“ i += 1;”
“} while (i == 0);”
“System.out.println(“”i = “” + i); …i = 1
*Khoi lenh sai o dong nao?”
“1. int i=0;”
“2. do {”
“3. i += 1;”
“4. } while (i == 0);”
“5. System.out.println(“”i = “” + i);” …Khong sai o dong nao ca
*s co ket qua la bao nhieu khi thuc hien khoi lenh?”
“int i = 0;”
“int s = 0;”
“for ( ; ; ) {”
“ if i == 3 break;”
“ s = s + i;”
“ i++;”
“}”…Chuong trinh bao loi
*Chuong trinh sai o dong nao?”
“1. int i = 0;”
“2. int s = 0;”
“3. for ( ; ; ) {”
“4. if i == 3 break;”
“5. s = s + i;”
“6. i++;”
“7. }”…4
*Chuong trinh dua ra ket qua la bao nhieu?”
“class BreakDemo {”
“ public static void main(String[] args) {”
“ int[] arrayOfInts = { 32, 87, 3, 589, 12, 1076, 2000, 8, 622, 127 };”
“ int searchFor = 12;”
“ int i;”
“ boolean fountIt = false;”
“ for ( i = 0; i < arrayOfInts.length; i++) {”
“ if (arrayOfInts[i] == searchFor) {”
“ fountIt = true;”
“ break;”
“ }”
“ }”
“ if (fountIt) {”
“ System.out.println(“”Found “” + searchFor + “” at index “” + i);”
“ } else”
“ System.out.println(searchFor + “” not in the array”");”
“ }”
“}”…Found 12 at index 4
*Chuong trinh tren sai o dong nao?
“1. class BreakDemo {”
“2. public static void main(String[] args) {”
“3. int[] arrayOfInts = { 32, 87, 3, 589, 12, 1076, 2000, 8, 622, 127 };”
“4. int searchFor = 12;”
“5. int i;”
“6. boolean fountIt = false;”
“7. for ( i = 0; i < arrayOfInts.length; i++) {”
“8. if (arrayOfInts[i] == searchFor) {”
“9. fountIt = true;”
“10. break;”
“11. }”
“12. }”
“13. if (fountIt) {”
“14. System.out.println(“”Found “” + searchFor + “” at index “” + i);”
“15. } else”
“16. System.out.println(searchFor + “” not in the array”");”
“17. }”
“18.} …Chuong trinh khong sai
*Chuong trinh thuc hien cong viec gi?”
“class BreakDemo {”
“ public static void main(String[] args) {”
“ int[] arrayOfInts = { 32, 87, 3, 589, 12, 1076, 2000, 8, 622, 127 };”
“ int searchFor = 12;”
“ int i;”
“ boolean fountIt = false;”
“ for ( i = 0; i < arrayOfInts.length; i++) {”
“ if (arrayOfInts[i] == searchFor) {”
“ fountIt = true;”
“ break;”
“ }”
“ }”
“ if (fountIt) {”
“ System.out.println(“”Found “” + searchFor + “” at index “” + i);”
“ } else”
“ System.out.println(searchFor + “” not in the array”");”
“ }”
“}”…Tim 1 phan tu cua mang
*Lenh nao de mo dia chi website tren trinh duyet trong applet?…getAppletContext().showDocument()
*Lenh nao de dua thong bao len thanh trang thai cua trinh duyet…getAppletContext().showStatus()
*applet su dung doi tuong nao de kich hoat Threads…Runnable
*Thu vien nao cho phep su dung cac lop xu ly tuong tac giua nguoi dung va applet? …java.awt.event.*
*Doi tuong nao cho phep xu ly tuong tac hanh dong giua nguoi dung va applet ActionListener…1
*Doi tuong nao cho phep xu ly thao tac chuot trong applet…MouseListener
*Doi tuong nao cho phep xu ly thao tac di chuyen chuot trong applet? …MouseMotionListener
*Chuong trinh sau thuc hien cong viec gi?”
“class ContinueDemo {”
“ public static void main(String[] args) { ”
“ String searchMe = “”peter piper picked a peck of pickled peppers”";”
“ int max = searchMe.length();”
“ int numPs = 0;”
“ for ( int i = 0; i < max; i++) {”
“ if (searchMe.charAt(i) != ‘p’) continue;”
“ numPs ++;”
“ }”
“ System.out.println(“”Found “” + numPs + “” p’s in the string.”");”
“ }”
“}”
@Dem chu cai p trong chuoi ky tu… 1
*Chuong trinh sau dua ra ket qua la gi?”
“class ContinueDemo {”
“ public static void main(String[] args) { ”
“ String searchMe = “”peter piper picked a peck of pickled peppers”";”
“ int max = searchMe.length();”
“ int numPs = 0;”
“ for ( int i = 0; i < max; i++) {”
“ if (searchMe.charAt(i) != ‘p’) ”
“ continue;”
“ numPs ++;”
“ }”
“ System.out.println(“”Found “” + numPs + “” p’s in the string.”");”
“ }”
“}”
Found 9 p’s in the string… 1
*Chuong trinh sau dua ra ket qua la gi?”
“class ContinueDemo {”
“ public static void main(String[] args) { ”
“ String searchMe = “”peter piper picked a peck of pickled pepers”";”
“ int max = searchMe.length();”
“ int numPs = 0;”
“ for ( int i = 0; i < max; i++) {”
“ if (searchMe.charAt(i) != ‘p’) ”
“ continue;”
“ numPs ++;”
“ }”
“ System.out.println(“”Found “” + numPs + “” p’s in the string.”");”
“ }”
“}”…Found 8 p’s in the string
*Applet la gi?…La mot loai chuong trinh Java dac biet ma mot trinh duyet cho phep cong nghe Java download tu Internet va chay
*Cau nao sau day la dung co noi dung noi ve dac diem cua applet: …Applet thuong duoc gan trong website va phai la lop con cua lop java.applet.Applet
*Phuong thuc init() trong Applet co muc dich gi…Phuong thuc duoc kich hoat dau tien khi applet khoi dong. init() chi chay mot lan duy nhat vao luc bat dau chuong trinh
*Cho khoi lenh sau:”
“int i = 10;”
“int n = i++%5;”
@Sau khi thuc hien khoi lenh, ket qua se la: …i = 11, n = 0
*Cho khoi lenh sau
“int i = 10;”
“int n = ++i%5″
@Sau khi thuc hien khoi lenh, ket qua se la:” …i = 11, n = 1
*Lenh result = condition ? value1 : value2 co nghia gi?…neu condition la true thi result = value1, neu condition la false thi result = value2
*Mang la gi…La mot doi tuong chua cac mot so huu han cac gia tri cung kieu
*Cach khai bao mang nao sau day la dung…Ca 3 cach khai bao deu dung
*Cho khoi lenh nhu sau:”
“String[] students = new String[10];”
“String studentName = “”Peter Parker”";”
“students[0] = studentName;”
“studentName = null;”
@Co bao nhieu doi tham chieu cua doi tuong mang va bien ton tai sau khi thuc hien khoi lenh? …2
*Cho khoi lenh nhu sau:”
“public class SomeWrong {”
“ public static void main(String[] args) {”
“ Rectangle myRect;”
“ myRect.width = 40;”
“ myRect.height = 50;”
“ System.out.println(“”Dien tich hinh chu nhat: “” + myRect.area());”
“ }”
“}”
@Gia thiet lop Rectangle da duoc dinh nghia va khong sai. Khi chay, chuong trinh bao loi la do: …Chua khoi tao bien myRect
*De chuyen dao gia tri cua mot bien boolean, ta dung toan tu nao…!
*Lenh if CONDITION { Khoi lenh } co tac dung gi?…Neu CONDITION dung thi thuc hien Khoi lenh, neu sai thi bo qua
*Lenh if CONDITION {Khoi lenh 1} else {Khoi lenh 2} co tac dung gi?…neu CONDITION dung thi thuc hien Khoi lenh 1, neu sai thi thuc hien Khoi lenh 2
*Bien message sau day co ket qua la:”
“String expletive = “”Expletive”";”
“String PG13 = “”deleted”";”
“String message = expletive + PG13; …Expletivedeleted
*Cau lenh sau in ra ket qua la:”
“int age = 13;”
“String message = “”PG”" + age; …PG13
*De kiem tra 2 chuoi co bang nhau hay khong, su dung phuong thuc nao?…string1.equals(string2)
*Lenh charAt(n) co tac dung gi…Tra ve ky tu co vi tri chi muc n
*Lenh sau tra ve ket qua la bao nhieu?”
“String greetings = “”Hello”";”
“char letter = greetings.charAt(0); …H
*Khoi lenh sau dua ra ket qua la bao nhieu voi a =5, b =8?”
“double a, b;”
“if (a == 0)”
“ if (b != 0) System.out.println(“”Phuong trinh vo nghiem”");”
“ else System.out.println(“”Phuong trinh co vo so nghiem”");”
“else System.out.println(-b/a);” …-1.6
*Khoi lenh sau dua ra ket qua la bao nhieu voi a=0,b=0?”
“double a, b;”
“if (a == 0)”
“ if (b != 0) System.out.println(“”Phuong trinh vo nghiem”");”
“ else System.out.println(“”Phuong trinh co vo so nghiem”");”
“else System.out.println(-b/a);” …Phuong trinh co vo so nghiem
*Khoi lenh sau dua ra ket qua la bao nhieu voi a=0,b=8?”
“double a, b;”
“if (a == 0)”
“ if (b != 0) System.out.println(“”Phuong trinh vo nghiem”");”
“ else System.out.println(“”Phuong trinh co vo so nghiem”");”
“else System.out.println(-b/a);” …Phuong trinh vo nghiem
*Khoi lenh sau dua thuc hien cong viec gi?”
“double a, b;”
“if (a == 0)”
“ if (b != 0) System.out.println(“”Phuong trinh vo nghiem”");”
“ else System.out.println(“”Phuong trinh co vo so nghiem”");”
“else System.out.println(-b/a); …Giai phuong trinh bac nhat
*Doan chuong trinh sau dua ra ket qua la?”
“double a = 3, b = 5, c = 2;”
“double delta = b * b – 4 * a * c;”
“if (delta < 0) System.out.println(“”Phuong trinh vo nghiem”");”
“else if (delta == 0) System.out.println(“”Phuong trinh co mot nghiem kep”");”
“else System.out.println(“”Phuong trinh co hai nghiem phan biet”");…Phuong trinh co hai nghiem phan biet
*Doan chuong trinh sau dua ra ket qua la?”
“double a = 5, b = 3, c = 2;”
“double delta = b * b – 4 * a * c;”
“if (delta < 0) System.out.println(“”Phuong trinh vo nghiem”");”
“else if (delta == 0) System.out.println(“”Phuong trinh co mot nghiem kep”");”
“else System.out.println(“”Phuong trinh co hai nghiem phan biet”");…Phuong trinh vo nghiem
*Doan chuong trinh sau dua ra ket qua la?” & vbCrLf & _
“double a = 2, b = 4, c = 2;” & vbCrLf & _
“double delta = b * b – 4 * a * c;” & vbCrLf & _
“if (delta < 0) System.out.println(“”Phuong trinh vo nghiem”");” & vbCrLf & _
“else if (delta == 0) System.out.println(“”Phuong trinh co mot nghiem kep”");” & vbCrLf & _
“else System.out.println(“”Phuong trinh co hai nghiem phan biet”");”… “Phuong trinh co mot nghiem kep”
*Lenh sau in ra ket qua la bao nhieu:” & vbCrLf & _
“double x = 10000.0 / 3.0;” & vbCrLf & _
“System.out.print(x);”… “3333.3333333333335″
*Lenh sau in ra ket qua la bao nhieu:” & vbCrLf & _
“System.out.printf(“”%,.2f”", 10000.0 / 3.0);”… “3333.33″
*Chon dinh dang hien thi khi thuc hien cau lenh sau:” & vbCrLf & _
“System.out.printf(“”%tc”", new Date());”… “Sun Dec 02 17:26:19 ICT 2010″
*Chon dinh dang hien thi khi thuc hien cau lenh sau:” & vbCrLf & _
“System.out.printf(“”%1$s %2$tB %2$te, %2$tY”", “”Due date:”", new Date());”… “Due date: Dec 02, 2010″
*Cho khoi lenh sau:” & vbCrLf & _
“if (yourSale >= target)” & vbCrLf & _
“bonus = 100 + 0.01 * (yourSale – target);” & vbCrLf & _
“else” & vbCrLf & _
“bonus = 0;” & vbCrLf & _
“voi yourSale = 3000, target = 2500, vay bonus = ?”… “105″
*Cho khoi lenh sau:” & vbCrLf & _
“if (yourSale >= target)” & vbCrLf & _
“bonus = 100 + 0.01 * (yourSale – target);” & vbCrLf & _
“else” & vbCrLf & _
“bonus = 0″ & vbCrLf & _
“voi yourSale = 3000, target = 2500, vay bonus = ?”… “Lenh sai”
*Cho khoi lenh sau:” & vbCrLf & _
“if (yourSale >= target)” & vbCrLf & _
“bonus = 100 + 0.01 * (yourSale – target);” & vbCrLf & _
“else” & vbCrLf & _
“bonus = 0;” & vbCrLf & _
“voi yourSale = 2400, target = 2500, vay bonus = ?”… “0″
*Sau khi thuc hien khoi lenh, balance = ?” & vbCrLf & _
“double balance = 10, goal = 20, payment = 5;” & vbCrLf & _
“int years = 0;” & vbCrLf & _
“while (balance < goal) {” & vbCrLf & _
“balance += payment;” & vbCrLf & _
“double interest = balance * 0.1 / 100;” & vbCrLf & _
“balance += interest;” & vbCrLf & _
“years ++;” & vbCrLf & _
“}”… “20.035015″
*Sau khi thuc hien khoi lenh, balance = ?” & vbCrLf & _
“double balance = 10, goal = 20, payment = 10;” & vbCrLf & _
“int years = 0;” & vbCrLf & _
“while (balance <= goal) {” & vbCrLf & _
“balance += payment;” & vbCrLf & _
“double interest = balance * 0.1 / 100;” & vbCrLf & _
“balance += interest;” & vbCrLf & _
“years ++;” & vbCrLf & _
“… “20.2″
*Khi thuc hien doan lenh, balance =?” & vbCrLf & _
“double balance = 10, goal = 20, payment = 5;” & vbCrLf & _
“int years = 0;” & vbCrLf & _
“while (balance < goal) {” & vbCrLf & _
“balance += payment;” & vbCrLf & _
“double interest = balance * 0.1 / 100;” & vbCrLf & _
“balance += interest;” & vbCrLf & _
“years ++” & vbCrLf & _
“}”… “Lenh sai”
*Khi thuc hien, balance =?” & vbCrLf & _
“double balance = 20, goal = 20, payment = 5;” & vbCrLf & _
“int years = 0;” & vbCrLf & _
“do {” & vbCrLf & _
“balance += payment;” & vbCrLf & _
“double interest = balance * 0.1 / 100;” & vbCrLf & _
“balance += interest;” & vbCrLf & _
“years ++;” & vbCrLf & _
“} while (balance < goal);”… “25.025″
*Khi thuc hien, balance =?” & vbCrLf & _
“double balance = 20, goal = 20, payment = 5;” & vbCrLf & _
“int years = 0;” & vbCrLf & _
“do {” & vbCrLf & _
“balance += payment;” & vbCrLf & _
“double interest = balance * 0.1 / 100;” & vbCrLf & _
“balance += interest;” & vbCrLf & _
“years ++;” & vbCrLf & _
“} while (balance < goal)”… “Lenh sai”
*Khi thuc hien, years =?” & vbCrLf & _
“double balance = 20, goal = 20, payment = 5;” & vbCrLf & _
“int years = 0;” & vbCrLf & _
“do {” & vbCrLf & _
“balance += payment;” & vbCrLf & _
“double interest = balance * 0.1 / 100;” & vbCrLf & _
“balance += interest;” & vbCrLf & _
“years ++;” & vbCrLf & _
“} while (balance < goal);”… “1″
*Cho khoi lenh sau:” & vbCrLf & _
“int s = 0;” & vbCrLf & _
“for (int i = 0; i < 10; i++)” & vbCrLf & _
“s += i;” & vbCrLf & _
“Sau khi chay khoi lenh s = ?”… “45″
*Cho khoi lenh sau:” & vbCrLf & _
“for (int i = 0; i <= 10; i++) {” & vbCrLf & _
“int s = 0;” & vbCrLf & _
“s += i;}” & vbCrLf & _
“System.out.print(s);” & vbCrLf & _
“Sau khi chay khoi lenh s = ?”… “Lenh sai”
*Cho khoi lenh sau:” & vbCrLf & _
“int s = 0;” & vbCrLf & _
“for (int i = 0; i <= 10; i++)” & vbCrLf & _
“s += i;” & vbCrLf & _
“Sau khi chay khoi lenh s = ?”… “55”
*Cho khoi lenh sau:” & vbCrLf & _
“int s = 0;” & vbCrLf & _
“for (int i = 0; i < 10; i++) {” & vbCrLf & _
“s = 0;” & vbCrLf & _
“s += i;” & vbCrLf & _
“}” & vbCrLf & _
@Sau khi chay khoi lenh s = ?”… “9″
*Cho khoi lenh sau:” & vbCrLf & _
“for (int i = 0; i <= 10; i++) {” & vbCrLf & _
“if (i == 3)” & vbCrLf & _
“break;” & vbCrLf & _
“System.out.print(i);}” & vbCrLf & _
@Khi chay chuong trinh se in ra ket qua la bao nhieu?”… “012″
*Cho khoi lenh sau:” & vbCrLf & _
“for (int i = 0; i <= 10; i++) {” & vbCrLf & _
“if (i == 3)” & vbCrLf & _
“continue;” & vbCrLf & _
“System.out.print(i);}” & vbCrLf & _
@Khi chay chuong trinh se in ra ket qua la bao nhieu?”… “Khong co ket qua nao dung”
*Cho khoi lenh sau:” & vbCrLf & _
“for (int i = 0; i < 10; i++) {” & vbCrLf & _
“if (i == 3)” & vbCrLf & _
“continue;” & vbCrLf & _
“System.out.print(i);}” & vbCrLf & _
@Khi chay chuong trinh se in ra ket qua la bao nhieu?”… “012456789″
*Cho chuong trinh ten message.class:” & vbCrLf & _
“public static void main(String[] args) {” & vbCrLf & _
“if (args[0].equals(“”-g”"))” & vbCrLf & _
“System.out.println(“”Goodbye, “”);” & vbCrLf & _
“for (int i = 1; i < args.length; i++)” & vbCrLf & _
“System.out.print(“” “” + args[i]); }” & vbCrLf & _
@Neu chuong trinh chay voi lenh java message –g cruel world, vay tham so args[1] co gia tri la gi?”… “cruel”
*Cho chuong trinh ten message.class:” & vbCrLf & _
“public static void main(String[] args) {” & vbCrLf & _
“if (args[0].equals(“”-g”"))” & vbCrLf & _
“System.out.println(“”Goodbye, “”);” & vbCrLf & _
“for (int i = 1; i < args.length; i++)” & vbCrLf & _
“System.out.print(“” “” + args[i]); }” & vbCrLf & _
@Neu chuong trinh chay voi lenh java message –g cruel world, vay tham so args[0] co gia tri la gi?”… “-g”
*Cho chuong trinh ten message.class:” & vbCrLf & _
“public static void main(String[] args) {” & vbCrLf & _
“if (args[0].equals(“”-g”"))” & vbCrLf & _
“System.out.println(“”Goodbye, “”);” & vbCrLf & _
“for (int i = 1; i < args.length; i++)” & vbCrLf & _
“System.out.print(“” “” + args[i]); }” & vbCrLf & _
@Neu chuong trinh chay voi lenh java message –g cruel world, vay tham so args[2] co gia tri la gi?”… “world”
*Cho chuong trinh ten message.class:” & vbCrLf & _
“public static void main(String[] args) {” & vbCrLf & _
“if (args[0].equals(“”-g”"))” & vbCrLf & _
“System.out.println(“”Goodbye, “”);” & vbCrLf & _
“for (int i = 1; i < args.length; i++)” & vbCrLf & _
“System.out.print(“” “” + args[i]); }” & vbCrLf & _
@Neu chuong trinh chay voi lenh java message –g cruel world, vay tham so args[3] co gia tri la gi?”… “Khong co tham so args[3]“
*Cho chuong trinh ten message.class:” & vbCrLf & _
“public static void main(String[] args) {” & vbCrLf & _
“if (args[0].equals(“”-g”"))” & vbCrLf & _
“System.out.println(“”Goodbye, “”);” & vbCrLf & _
“for (int i = 1; i < args.length; i++)” & vbCrLf & _
“System.out.print(“” “” + args[i]); }” & vbCrLf & _
@Neu chuong trinh chay voi lenh java message –g cruel world se in ket qua la gi?”… “Goodbye, cruel world”
*Cho chuong trinh ten message.class:” & vbCrLf & _
“public static void main(String[] args) {” & vbCrLf & _
“if (args[0].equals(“”-g”"))” & vbCrLf & _
“System.out.println(“”Goodbye, “”);” & vbCrLf & _
“for (int i = 1; i < args.length; i++)” & vbCrLf & _
“System.out.print(“” “” + args[i]);” & vbCrLf & _
@Neu chuong trinh chay voi lenh java message –g cruel world se in ket qua la gi?”… “Chuong trinh bao loi”
*Cho class nhu sau:” & vbCrLf & _
“class KiemTra {” & vbCrLf & _
“private int i;” & vbCrLf & _
“private int nextId;” & vbCrLf & _
“public void setId() {” & vbCrLf & _
“id = nextId;” & vbCrLf & _
“nextId++;” & vbCrLf & _
“}” & vbCrLf & _
“}” & vbCrLf & _
@Neu khoi tao 2 doi tuong class A extends KiemTra va class B extends KiemTra, id cua doi tuong A co gia tri la ?”… “0″
*Cho class nhu sau:” & vbCrLf & _
“class KiemTra {” & vbCrLf & _
“private int i;” & vbCrLf & _
“private int nextId;” & vbCrLf & _
“public void setId() {” & vbCrLf & _
“id = nextId;” & vbCrLf & _
“nextId++;” & vbCrLf & _
“}” & vbCrLf & _
“}” & vbCrLf & _
@Neu khoi tao 2 doi tuong class A extends KiemTra va class B extends KiemTra, id cua doi tuong B co gia tri la ?”… “0″
*Cho class nhu sau:” & vbCrLf & _
“class KiemTra {” & vbCrLf & _
“private int i;” & vbCrLf & _
“private static int nextId;” & vbCrLf & _
“public void setId() {” & vbCrLf & _
“id = nextId;” & vbCrLf & _
“nextId++;” & vbCrLf & _
“}” & vbCrLf & _
“}” & vbCrLf & _
@Neu khoi tao 2 doi tuong class A extends KiemTra va class B extends KiemTra, id cua doi tuong B co gia tri la ?”… “1″
*Cho class nhu sau:” & vbCrLf & _
“class KiemTra {” & vbCrLf & _
“private int i;” & vbCrLf & _
“private static int nextId = 1;” & vbCrLf & _
“public void setId() {” & vbCrLf & _
“id = nextId;” & vbCrLf & _
“nextId++” & vbCrLf & _
“}” & vbCrLf & _
@Neu khoi tao 2 doi tuong class A extends KiemTra va class B extends KiemTra, id cua doi tuong B co gia tri la ?”… “Chuong trinh bao loi”
*Cho class nhu sau:” & vbCrLf & _
“1: public interface Comparable {” & vbCrLf & _
“2: int compareTo(Object other);” & vbCrLf & _
“3: }” & vbCrLf & _
“4: class Employee implements Comparable {” & vbCrLf & _
“5: public int compareTo(Object other) {” & vbCrLf & _
“6: Employee other = (Employee) otherObject;” & vbCrLf & _
“7: return 0;” & vbCrLf & _
“8: }” & vbCrLf & _
“9: }” & vbCrLf & _
@Chuong trinh tren sai o dong nao”… “Khong sai o dong nao ca”
*Cho class nhu sau:” & vbCrLf & _
“1: public interface Comparable {” & vbCrLf & _
“2: int compareTo(Object other);” & vbCrLf & _
“3: }” & vbCrLf & _
“4: class Employee implement Comparable {” & vbCrLf & _
“5: int compareTo(Object other) {” & vbCrLf & _
“6: Employee other = (Employee) otherObject;” & vbCrLf & _
“7: return 0;” & vbCrLf & _
“8: }” & vbCrLf & _
“9: }” & vbCrLf & _
@Chuong trinh tren sai o dong nao“… “4, 5″
*Cho class nhu sau:” & vbCrLf & _
“1: public interface Comparable {” & vbCrLf & _
“2: int compareTo(Object other);” & vbCrLf & _
“3: }” & vbCrLf & _
“4: class Employee implements Comparable {” & vbCrLf & _
“5: public int compareTo(Object other) {” & vbCrLf & _
“6: other = otherObject;” & vbCrLf & _
“7: return 0;” & vbCrLf & _
“8: }” & vbCrLf & _
“9: }” & vbCrLf & _
@Chuong trinh tren sai o dong nao“… “6″
*Cho class nhu sau:” & vbCrLf & _
“1: public interface Comparable<Employee> {” & vbCrLf & _
“2: int compareTo(Employee other);” & vbCrLf & _
“3: }” & vbCrLf & _
“4: class Employee implements Comparable {” & vbCrLf & _
“5: public int compareTo(Employee other) {” & vbCrLf & _
“6: return 0;” & vbCrLf & _
“7: }” & vbCrLf & _
“8: }” & vbCrLf & _
@Chuong trinh tren sai o dong nao”… “Khong sai o dong nao ca”
*Cho class nhu sau:” & vbCrLf & _
“1: public interface Comparable<Employee> {” & vbCrLf & _
“2: int compareTo(Employee other);” & vbCrLf & _
“3: }” & vbCrLf & _
“4: class Employee implements Comparable {” & vbCrLf & _
“5: public int compareTo(Object other) {” & vbCrLf & _
“6: return 0;” & vbCrLf & _
“7: }” & vbCrLf & _
“8: }” & vbCrLf & _
@Chuong trinh tren sai o dong nao“… “5″
*Cho class nhu sau:” & vbCrLf & _
“1: public interface Comparable<Employee> {” & vbCrLf & _
“2: int compareTo(Employee other);” & vbCrLf & _
“3: }” & vbCrLf & _
“4: class Main {” & vbCrLf & _
“5: x = new Comparable(Employee e);” & vbCrLf & _
“6: System.out.print(x);” & vbCrLf & _
“7: }” & vbCrLf & _
@Chuong trinh tren sai o dong nao“… “5″
*Cho class nhu sau:” & vbCrLf & _
“1: public interface Comparable<Employee> {” & vbCrLf & _
“2: int compareTo(Employee other);” & vbCrLf & _
“3: }” & vbCrLf & _
“4: class Main {” & vbCrLf & _
“5: Comparable x;” & vbCrLf & _
“6: x = new Employee();” & vbCrLf & _
“7: System.out.print(x);” & vbCrLf & _
“8: }” & vbCrLf & _
@Chuong trinh tren sai o dong nao”… “Khong sai o dong nao ca”
*Cho khoi lenh nhu sau:” & vbCrLf & _
“class Employee {” & vbCrLf & _
“private double luong = 0;” & vbCrLf & _
“public Employee (double d) {” & vbCrLf & _
“ luong = d;” & vbCrLf & _
“}” & vbCrLf & _
“public void tangLuong(int s) {” & vbCrLf & _
“ luong = s;” & vbCrLf & _
“}” & vbCrLf & _
“public static void main(String[] args) {” & vbCrLf & _
“Employee original = new Employee(50000);” & vbCrLf & _
“Employee copy = original;” & vbCrLf & _
“copy.tangLuong(10);” & vbCrLf & _
“}” & vbCrLf & _
“}” & vbCrLf & _
@Khi chay khoi lenh tren, luong cua doi tuong original la bao nhieu?”… “55000″
*Cho khoi lenh nhu sau:” & vbCrLf & _
“class Employee {” & vbCrLf & _
“private double luong = 0;” & vbCrLf & _
“public Employee (double d) {” & vbCrLf & _
“ luong = d;” & vbCrLf & _
“}” & vbCrLf & _
“public void tangLuong(int s) {” & vbCrLf & _
“ luong = s;” & vbCrLf & _
“}” & vbCrLf & _
“public static void main(String[] args) {” & vbCrLf & _
“ Employee original = new Employee(50000);” & vbCrLf & _
“ Employee copy = original;” & vbCrLf & _
“ copy.tangLuong(10);” & vbCrLf & _
“}” & vbCrLf & _
“}” & vbCrLf & _
@Khi chay khoi lenh tren, luong cua doi tuong copy la bao nhieu?”… “55000″
*Cho khoi lenh nhu sau:” & vbCrLf & _
“class Employee {” & vbCrLf & _
“private double luong = 0;” & vbCrLf & _
“public void tangLuong() {” & vbCrLf & _
“luong = s;” & vbCrLf & _
“}” & vbCrLf & _
“public static void main(String[] args) {” & vbCrLf & _
“Employee original = new Employee(“”John Public”",50000);” & vbCrLf & _
“Employee copy = original;” & vbCrLf & _
“original.tangLuong(10);” & vbCrLf & _
“}” & vbCrLf & _
@Khi chay khoi lenh tren, luong cua doi tuong copy la bao nhieu?”… “Lenh sai”
*Cho khoi lenh nhu sau:” & vbCrLf & _
“class Wind extends Panel {” & vbCrLf & _
“private Button red;” & vbCrLf & _
“private Button blue;” & vbCrLf & _
“public Wind() {” & vbCrLf & _
“red = new Button(“”Red”");” & vbCrLf & _
“blue = new Button(“”Blue”");” & vbCrLf & _
“add(red);” & vbCrLf & _
“add(blue);” & vbCrLf & _
“red.addActionListener(new ActionListener() {” & vbCrLf & _
“public void actionPerformed(ActionEvent ae) {” & vbCrLf & _
“System.exit(0);” & vbCrLf & _
“}});” & vbCrLf & _
“blue.addActionListener(new ActionListener() {” & vbCrLf & _
“public void actionPerformed(ActionEvent ae) {” & vbCrLf & _
“setBackground(Color.BLUE);” & vbCrLf & _
“}});” & vbCrLf & _
“}” & vbCrLf & _
@Khi chay khoi lenh tren, neu nhan nut Red se xay ra su kien gi?”… “Chuong trinh se thoat”
*Cho khoi lenh nhu sau:” & vbCrLf & _
“class Wind extends Panel {” & vbCrLf & _
“private Button red;” & vbCrLf & _
“private Button blue;” & vbCrLf & _
“public Wind() {” & vbCrLf & _
“red = new Button(“”Red”");” & vbCrLf & _
“blue = new Button(“”Blue”");” & vbCrLf & _
“add(red);” & vbCrLf & _
“add(blue);” & vbCrLf & _
“red.addActionListener(new ActionListener() {” & vbCrLf & _
“public void actionPerformed(ActionEvent ae) {” & vbCrLf & _
“System.exit(0);” & vbCrLf & _
“}});” & vbCrLf & _
“blue.addActionListener(new ActionListener() {” & vbCrLf & _
“public void actionPerformed(ActionEvent ae) {” & vbCrLf & _
“setBackground(Color.BLUE);” & vbCrLf & _
“}});” & vbCrLf & _
“}” & vbCrLf & _
@Khi chay khoi lenh tren, neu nhan nut Blue se xay ra su kien gi?”… “Chuong trinh se doi mau nen sang mau Xanh”
*Cho khoi lenh nhu sau:” & vbCrLf & _
“class Wind extends Panel {” & vbCrLf & _
“private Button red;” & vbCrLf & _
“private Button blue;” & vbCrLf & _
“public Wind() {” & vbCrLf & _
“red = new Button(“”Red”");” & vbCrLf & _
“blue = new Button(“”Blue”");” & vbCrLf & _
“add(red);” & vbCrLf & _
“add(blue);” & vbCrLf & _
“red.addActionListener(new ActionListener() {” & vbCrLf & _
“public void actionPerformed(ActionEvent ae) {” & vbCrLf & _
“setBackground(Color.RED);” & vbCrLf & _
“}});” & vbCrLf & _
“blue.addActionListener(new ActionListener() {” & vbCrLf & _
“public void actionPerformed(ActionEvent ae) {” & vbCrLf & _
“setBackground(Color.BLUE);” & vbCrLf & _
“}});” & vbCrLf & _
“}” & vbCrLf & _
@Khi chay khoi lenh tren, neu nhan nut Red se xay ra su kien gi?”… “Chuong trinh se doi mau nen sang mau Do”
*Cho khoi lenh nhu sau:” & vbCrLf & _
“class Wind extends Panel {” & vbCrLf & _
“private Button red;” & vbCrLf & _
“private Button blue;” & vbCrLf & _
“public Wind() {” & vbCrLf & _
“red = new Button(“”Red”");” & vbCrLf & _
“blue = new Button(“”Blue”");” & vbCrLf & _
“add(red);” & vbCrLf & _
“add(blue);” & vbCrLf & _
“red.addActionListener(new ActionListener() {” & vbCrLf & _
“public void actionPerformed(ActionEvent ae) {” & vbCrLf & _
“setBackground(Color.yellow);” & vbCrLf & _
“}});” & vbCrLf & _
“blue.addActionListener(new ActionListener() {” & vbCrLf & _
“public void actionPerformed(ActionEvent ae) {” & vbCrLf & _
“setBackground(SystemColor.WINDOW);” & vbCrLf & _
“}});” & vbCrLf & _
“}” & vbCrLf & _
@Khi chay khoi lenh tren, neu nhan nut Blue se xay ra su kien gi?”… “Loi bien dich”
*Cho khoi lenh nhu sau:” & vbCrLf & _
“class Wind extends Panel {” & vbCrLf & _
“private Button red;” & vbCrLf & _
“private Button blue;” & vbCrLf & _
“public Wind() {” & vbCrLf & _
“red = new Button(“”Red”");” & vbCrLf & _
“blue = new Button(“”Blue”");” & vbCrLf & _
“add(red);” & vbCrLf & _
“add(blue);” & vbCrLf & _
“red.addActionListener(new ActionListener() {” & vbCrLf & _
“setBackground(Color.yellow);” & vbCrLf & _
“});” & vbCrLf & _
“blue.addActionListener(new ActionListener() {” & vbCrLf & _
“Color c = new Color (255,0,0);” & vbCrLf & _
“setBackground(c);” & vbCrLf & _
“});” & vbCrLf & _
“}” & vbCrLf & _
@Khi chay khoi lenh tren, neu nhan nut Blue se xay ra su kien gi?”… “Chuong trinh se doi mau nen sang mau Xanh”
*Trong cac loai su kien sau, loai su kien nao la Semantic”… “ItemEvent”
*Trong cac loai su kien sau, loai su kien nao la Semantic”… “Tat ca cac loai event”
*Trong cac loai su kien sau, loai su kien nao la low-level”… “Tat ca cac su kien”
*Trong cac loai su kien sau, loai su kien nao la low-level”… “MouseEvent”
*Khi thuc hien khoi lenh se cho ket qua la bao nhieu?” & vbCrLf & _
“int i=0;” & vbCrLf & _
“do {” & vbCrLf & _
“ i += 1;” & vbCrLf & _
“} while (i == 0);” & vbCrLf & _
“System.out.println(“”i = “” + i);”… “i = 1″
*Khi a=3 thuc hien khoi lenh se cho ket qua cua i la bao nhieu?” & vbCrLf & _
“int i=1;” & vbCrLf & _
“int s=1;” & vbCrLf & _
“for(i=1;i<=a;i++)” & vbCrLf & _
“s=s*i;”… “Tat ca deu sai.”
*Cho khoi lenh sau:” & vbCrLf & _
“int s = 0;” & vbCrLf & _
“for (int i = 0; i <= 10; i++)” & vbCrLf & _
“s += i;” & vbCrLf & _
@Sau khi chay khoi lenh s =?”… “55″
*Cho doan ma sau ket qua hien thi se la:” & vbCrLf & _
“int n=12,k=2;” & vbCrLf & _
“while(k<n){” & vbCrLf & _
“ for(k=2;k<=n;k++)” & vbCrLf & _
“ if(n%k==0){” & vbCrLf & _
“ {” & vbCrLf & _
“ System.out.print(k + “” “”);” & vbCrLf & _
“ n=n/k;” & vbCrLf & _
“ break;” & vbCrLf & _
“ } ” & vbCrLf & _
“ }”… “2 2 3″
*Cho biet ket qua khi thi hanh doan chuong trinh sau:” & vbCrLf & _
“1:public class Short {” & vbCrLf & _
“2:public static void main(String[] args){” & vbCrLf & _
“3: String s=”"Hello”";” & vbCrLf & _
“4: if(s.length()>5)” & vbCrLf & _
“5: ;//do nothing” & vbCrLf & _
“6: System.out.print(“”value is”"+ s);” & vbCrLf & _
“7: }” & vbCrLf & _
“8:}”… “value is Hello”
*Cho biet ket qua khi thi hanh doan chuong trinh sau:” & vbCrLf & _
“1:public class Short” & vbCrLf & _
“2:public static void main(String[] args){” & vbCrLf & _
“3: String s=”"Hello”";” & vbCrLf & _
“4: if(s.length()>5)” & vbCrLf & _
“5: ;//do nothing” & vbCrLf & _
“6: System.out.print(“”value is”"+ s);” & vbCrLf & _
“7: }” & vbCrLf & _
“8:}”… “Loi bien dich tai dong 1″
*Cho khoi lenh nhu sau, ket qua in ra man hinh se la” & vbCrLf & _
“int k,n;” & vbCrLf & _
“for(k=1;k<10;k++)” & vbCrLf & _
“ if((k%3==0)||(k%7==0))” & vbCrLf & _
“ System.out.print(k + “”"”);”… ” 3 6 7 9”
*Cho khoi lenh nhu sau, ket qua in ra man hinh se la” & vbCrLf & _
“int k,n;” & vbCrLf & _
“for(k=1;k<30;k++)” & vbCrLf & _
“ if((k%3==0)&&(k%7==0))” & vbCrLf & _
“ System.out.print(k + “” “”);”… “21″
*Khi chay doan chuong trinh sau cho ket qua bang bao nhieu?” & vbCrLf & _
“int s,i;” & vbCrLf & _
“for(i=1;i<=3;i++) {” & vbCrLf & _
“ s=s+i;” & vbCrLf & _
“ s=0;” & vbCrLf & _
“ }” & vbCrLf & _
“System.out.print(“”s=”"+s);” & vbCrLf & _
“}”… “Loi bien dich”
*Khi chay doan chuong trinh sau cho ket qua bang bao nhieu?” & vbCrLf & _
“int s=0,i;” & vbCrLf & _
“for(i=1;i<=3;i++) {” & vbCrLf & _
“ s=s+i;” & vbCrLf & _
“ s=0;” & vbCrLf & _
“ }” & vbCrLf & _
“System.out.print(“”s=”"+s);” & vbCrLf & _
“}”… “s=0″
*Khi chay doan chuong trinh sau cho ket qua bang bao nhieu?” & vbCrLf & _
“int i;” & vbCrLf & _
“float p;” & vbCrLf & _
“p=1;” & vbCrLf & _
“for(i=1;i<3;i++) {” & vbCrLf & _
“ p=p*i;” & vbCrLf & _
“ p=p*p;” & vbCrLf & _
“ }” & vbCrLf & _
“System.out.print(“”p=”"+p);”… “p=4″
*Khi chay doan chuong trinh sau cho ket qua bang bao nhieu?” & vbCrLf & _
“int [] a;” & vbCrLf & _
“int s=0,i;” & vbCrLf & _
“a=new int[3];” & vbCrLf & _
“a[0]=1;” & vbCrLf & _
“a[1]=2;” & vbCrLf & _
“a[2]=5;” & vbCrLf & _
“for(i=0;i<3;i++)” & vbCrLf & _
“ s=s+a[i];” & vbCrLf & _
“System.out.print(“”s=”"+s);”… “s=8″
*Khi chay doan chuong trinh sau cho ket qua bang bao nhieu?” & vbCrLf & _
“int [] a;” & vbCrLf & _
“int s,i;” & vbCrLf & _
“a=new int[3];” & vbCrLf & _
“a[0]=1;” & vbCrLf & _
“a[1]=2;” & vbCrLf & _
“a[2]=5;” & vbCrLf & _
“for(i=0;i<3;i++)” & vbCrLf & _
“ s=s+a[i];” & vbCrLf & _
“System.out.print(“”s=”"+s);”… “Loi bien dich”
*Cho doan chuong trinh sau:” & vbCrLf & _
“public class Test {” & vbCrLf & _
“ public static void main(String[] args) {” & vbCrLf & _
“ int k,n;” & vbCrLf & _
“ for (k=1;k<10;k++) {” & vbCrLf & _
“ if (k%3==0)” & vbCrLf & _
“ System.out.print(k+”" “”);” & vbCrLf & _
“ }” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Doan chuong trinh tren in ra ket qua bao nhieu?…3 6 9″
*Cho doan chuong trinh sau:” & vbCrLf & _
“public class Test {” & vbCrLf & _
“ public static void main(String[] args) {” & vbCrLf & _
“ int k,n;” & vbCrLf & _
“ for (k=1;k<10;k++) {” & vbCrLf & _
“ if (k%2==0)” & vbCrLf & _
“ System.out.print(k+”" “”);” & vbCrLf & _
“ }” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Doan chuong trinh tren in ra ket qua bao nhieu?…2 4 6 8”
*Cho doan chuong trinh sau:” & vbCrLf & _
“public class Test {” & vbCrLf & _
“ public static void main(String[] args) {” & vbCrLf & _
“ int k,n;” & vbCrLf & _
“ for (k=1;k<10;k++) {” & vbCrLf & _
“ if (k%4==0)” & vbCrLf & _
“ System.out.print(k+”" “”);” & vbCrLf & _
“ }” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Doan chuong trinh tren in ra ket qua bao nhieu?…4 8″
*Cho doan chuong trinh sau:” & vbCrLf & _
“public class Test {” & vbCrLf & _
“ public static void main(String[] args) {” & vbCrLf & _
“ int k,n;” & vbCrLf & _
“ for (k=1;k<20;k++) {” & vbCrLf & _
“ if ((k%3==0) && (k%6==0))” & vbCrLf & _
“ System.out.print(k+”" “”);” & vbCrLf & _
“ }” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Doan chuong trinh tren in ra ket qua bao nhieu?…6 12 18″
*Cho doan chuong trinh sau:” & vbCrLf & _
“public class Test {” & vbCrLf & _
“ public static void main(String[] args) {” & vbCrLf & _
“ int k,n;” & vbCrLf & _
“ for (k=1;k<20;k++) {” & vbCrLf & _
“ if ((k%4==0) && (k%6==0))” & vbCrLf & _
“ System.out.print(k+”" “”);” & vbCrLf & _
“ }” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Doan chuong trinh tren in ra ket qua bao nhieu?….12”
*Cho doan chuong trinh sau:” & vbCrLf & _
“public class Test {” & vbCrLf & _
“ public static void main(String[] args) {” & vbCrLf & _
“ int k,n;” & vbCrLf & _
“ for (k=1;k<25;k++) {” & vbCrLf & _
“ if ((k%4==0) && (k%5==0))” & vbCrLf & _
“ System.out.print(k+”" “”);” & vbCrLf & _
“ }” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Doan chuong trinh tren in ra ket qua bao nhieu?….20″
*Cho doan chuong trinh sau:” & vbCrLf & _
“class Test {” & vbCrLf & _
“ public static void main(String[] args) {” & vbCrLf & _
“ int k,n;” & vbCrLf & _
“ for (k=1;k<100;k++) {” & vbCrLf & _
“ if ((k%3==0) && (k%7==0))” & vbCrLf & _
” System.out.print(k+”" “”)” & vbCrLf & _
“ }” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Doan chuong trinh tren in ra ket qua bao nhieu…Chuong trinh bao loi”
*Cho doan chuong trinh sau:” & vbCrLf & _
“public class Test {” & vbCrLf & _
“ public static void main(String[] args) {” & vbCrLf & _
“ int k,n;” & vbCrLf & _
“ for (k=1;k<100;k++)” & vbCrLf & _
“ if ((k%3==0) && (k%7==0))” & vbCrLf & _
“ System.out.print(k+”" “”);” & vbCrLf & _
“ }” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Doan chuong trinh tren in ra ket qua bao nhieu?…Chuong trinh bao loi”
*Cho doan chuong trinh sau:” & vbCrLf & _
“int traudung,traunam,traugia,pa = 0;” & vbCrLf & _
“for (traudung = 1; traudung <= 8; traudung++) ” & vbCrLf & _
“ for (traunam = 1; traunam < 9 – traudung; traunam++)” & vbCrLf & _
“ for (traugia = 1; traugia < 9 – (traudung+traunam); traugia++)” & vbCrLf & _
“ if ((traudung * 5 + traunam * 3 + traugia) == 10) {” & vbCrLf & _
“ System.out.println(traudung + “” “” + traunam + “” “” + traugia);” & vbCrLf & _
“ pa++;” & vbCrLf & _
“ }” & vbCrLf & _
@Doan chuong trinh tren in ra ket qua bao nhieu?”…1 1 2″
*Cho doan ma sau ket qua hien thi se la:” & vbCrLf & _
“int n=12,k=2;” & vbCrLf & _
“while(k<n){” & vbCrLf & _
“ for(k=2;k<=n;k++)” & vbCrLf & _
“ if(n%k==2){” & vbCrLf & _
“ {” & vbCrLf & _
“ System.out.print(k + “” “”);” & vbCrLf & _
“ n=n/k;” & vbCrLf & _
“ break;” & vbCrLf & _
“ } ” & vbCrLf & _
“ }…………………….5
*Cho doan chuong trinh sau:” & vbCrLf & _
“public class Test {” & vbCrLf & _
“ public static void main(String[] args) {” & vbCrLf & _
“ int n,k,dem;” & vbCrLf & _
“ for ( k = 1; k <= 10; k++ ) {” & vbCrLf & _
“ dem = 0;” & vbCrLf & _
“ for ( n = 2; n <= k; n++ ) { ” & vbCrLf & _
“ if ( k%n==0) { ” & vbCrLf & _
“ dem++;” & vbCrLf & _
“ }” & vbCrLf & _
“ if (dem > 1)” & vbCrLf & _
“ System.out.print(k);” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Doan chuong trinh tren cho ket qua la bao nhieu?…468910″
*Cho doan chuong trinh sau:” & vbCrLf & _
“public class Test {” & vbCrLf & _
“ public static void main(String[] args) {” & vbCrLf & _
“ int n,k,dem;” & vbCrLf & _
“ for ( k = 1; k <= 10; k++ ) {” & vbCrLf & _
“ dem = 0;” & vbCrLf & _
“ for ( n = 2; n <= k; n++ ) { ” & vbCrLf & _
“ if ( k%n==0) { ” & vbCrLf & _
“ dem++;” & vbCrLf & _
“ }” & vbCrLf & _
“ if (dem > 1)” & vbCrLf & _
“ System.out.print(k);” & vbCrLf & _
“}” & vbCrLf & _
@Doan chuong trinh tren cho ket qua la bao nhieu?…Chuong trinh bao loi”
*Cho doan chuong trinh sau:” & vbCrLf & _
“public class Test {” & vbCrLf & _
“ public static void main(String[] args) {” & vbCrLf & _
“ int n,k,dem;” & vbCrLf & _
“ for ( k = 7; k <= 10; k++ ) {” & vbCrLf & _
“ dem = 0;” & vbCrLf & _
“ for ( n = 2; n <= k; n++ ) { ” & vbCrLf & _
“ if ( k%n==0) { ” & vbCrLf & _
“ dem++;” & vbCrLf & _
“ }” & vbCrLf & _
“ if (dem > 1)” & vbCrLf & _
“ System.out.print(k);” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Doan chuong trinh tren cho ket qua la bao nhieu?…8910″
*Cho doan chuong trinh sau:” & vbCrLf & _
“public class Test {” & vbCrLf & _
“ public static void main(String[] args) {” & vbCrLf & _
“ int n,k,dem;” & vbCrLf & _
“ for ( k = 5; k <= 10; k++ ) {” & vbCrLf & _
“ dem = 0;” & vbCrLf & _
“ for ( n = 2; n <= k; n++ ) { ” & vbCrLf & _
“ if ( k%n==0) { ” & vbCrLf & _
“ dem++;” & vbCrLf & _
“ }” & vbCrLf & _
“ if (dem > 1)” & vbCrLf & _
“ System.out.print(k);” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Doan chuong trinh tren cho ket qua la bao nhieu?…68910″
*Cho doan chuong trinh sau:” & vbCrLf & _
“public class Test {” & vbCrLf & _
“ public static void main(String[] args) {” & vbCrLf & _
“ int n,k,dem;” & vbCrLf & _
“ for ( k = 10; k <= 12; k++ ) {” & vbCrLf & _
“ dem = 0;” & vbCrLf & _
“ for ( n = 2; n <= k; n++ ) { ” & vbCrLf & _
“ if ( k%n==2) { ” & vbCrLf & _
“ dem++;” & vbCrLf & _
“ }” & vbCrLf & _
“ if (dem > 1)” & vbCrLf & _
“ System.out.print(k);” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Doan chuong trinh tren cho ket qua la bao nhieu?…10″
*Cho doan chuong trinh sau:” & vbCrLf & _
“public class Test {” & vbCrLf & _
“ public static void main(String[] args) {” & vbCrLf & _
“ int n,k,dem;” & vbCrLf & _
” for ( k = 1; k <= 10; k++ ) {” & vbCrLf & _
“ dem = 0;” & vbCrLf & _
“ for ( n = 3; n <= k; n++ ) { ” & vbCrLf & _
“ if ( k%n==1) { ” & vbCrLf & _
“ dem++;” & vbCrLf & _
“ }” & vbCrLf & _
“ if (dem > 1)” & vbCrLf & _
“ System.out.print(k);” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Doan chuong trinh tren cho ket qua la bao nhieu?…57910”
*Cho doan chuong trinh sau:” & vbCrLf & _
“public class Test {” & vbCrLf & _
“ public static void main(String[] args) {” & vbCrLf & _
“ int n,k,dem;” & vbCrLf & _
“ for ( k = 1; k <= 15; k++ ) {” & vbCrLf & _
“ dem = 0;” & vbCrLf & _
“ for ( n = 2; n <= k; n++ ) { ” & vbCrLf & _
“ if ( k%n==3) { ” & vbCrLf & _
“ dem++;” & vbCrLf & _
“ }” & vbCrLf & _
“ if (dem > 1)” & vbCrLf & _
“ System.out.print(k);” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Doan chuong trinh tren cho ket qua la bao nhieu…111315″
*Cho doan chuong trinh sau:” & vbCrLf & _
“public class Test {” & vbCrLf & _
“ public static void main(String[] args) {” & vbCrLf & _
“ int n,k,dem;” & vbCrLf & _
“ for ( k = 7; k < 10; k++ ) {” & vbCrLf & _
“ dem = 0;” & vbCrLf & _
“ for ( n = 3; n <= k; n++ ) { ” & vbCrLf & _
“ if ( k%n==0) { ” & vbCrLf & _
“ dem++;” & vbCrLf & _
“ }” & vbCrLf & _
“ if (dem > 1)” & vbCrLf & _
“ System.out.print(k);” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Doan chuong trinh tren cho ket qua la bao nhieu?…89”
*Cho doan chuong trinh sau:” & vbCrLf & _
“public class Test {” & vbCrLf & _
“ public static void main(String[] args) {” & vbCrLf & _
“ int n,k,dem;” & vbCrLf & _
“ for ( k = 1; k <= 10; k++ ) {” & vbCrLf & _
“ dem = 0;” & vbCrLf & _
“ for ( n = 3; n <= k; n++ ) { ” & vbCrLf & _
“ if ( k%n==0) { ” & vbCrLf & _
“ dem++;” & vbCrLf & _
“ }” & vbCrLf & _
“ if (dem > 1)” & vbCrLf & _
“ System.out.print(k);” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Doan chuong trinh tren thuc hien cong viec gi…In ra cac hop so tu 1 den 10″
*Cho doan chuong trinh sau:” & vbCrLf & _
“public class Test {” & vbCrLf & _
“ public static void main(String[] args) {” & vbCrLf & _
“ int k=0,n,dem,j=0;” & vbCrLf & _
“ while(j<3) {” & vbCrLf & _
“ k++;” & vbCrLf & _
“ dem=0; ” & vbCrLf & _
“ for(n=2;n<=k;n++) { ” & vbCrLf & _
“ if(k%n==0) dem++;” & vbCrLf & _
“ }” & vbCrLf & _
“ if(dem==1) {” & vbCrLf & _
“ System.out.print(k+”" “”);” & vbCrLf & _
“ j++;” & vbCrLf & _
“ }” & vbCrLf & _
“ }” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Doan chuong trinh tren cho ket qua la bao nhieu?...2 3 5″
*Cho doan chuong trinh sau:” & vbCrLf & _
“public class Test {” & vbCrLf & _
“ public static void main(String[] args) {” & vbCrLf & _
“ int k=0,n,dem,j=0;” & vbCrLf & _
“ while(j<3) {” & vbCrLf & _
“ k++;” & vbCrLf & _
“ dem=0; ” & vbCrLf & _
“ for(n=2;n<k;n++) { ” & vbCrLf & _
“ if(k%n==0) dem++;” & vbCrLf & _
“ if(dem==1) {” & vbCrLf & _
“ System.out.print(k+”" “”);” & vbCrLf & _
“ j++;” & vbCrLf & _
“ }” & vbCrLf & _
“ }” & vbCrLf & _
“ }” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Doan chuong trinh tren cho ket qua la bao nhieu?…2 3 4 4″
*Cho doan chuong trinh sau:” & vbCrLf & _
“public class Test {” & vbCrLf & _
“ public static void main(String[] args) {” & vbCrLf & _
“ int k=0,n,dem,j=0;” & vbCrLf & _
“ while(j<3) {” & vbCrLf & _
“ k++;” & vbCrLf & _
“ dem=0; ” & vbCrLf & _
“ for(n=2;n<=k;n++) { ” & vbCrLf & _
“ if(k%n==0) dem++;” & vbCrLf & _
“ if(dem==1) {” & vbCrLf & _
“ System.out.print(k+”" “”);” & vbCrLf & _
“ j++;” & vbCrLf & _
“ }” & vbCrLf & _
“ }” & vbCrLf & _
“ }” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@ Doan chuong trinh tren cho ket qua la bao nhieu?…”4 4 6″
*Cho doan chuong trinh sau:” & vbCrLf & _
“public class Test {” & vbCrLf & _
“ public static void main(String[] args) {” & vbCrLf & _
“ int k=0,n,dem,j=0;” & vbCrLf & _
“ while(j<3) {” & vbCrLf & _
“ dem=0; ” & vbCrLf & _
“ for(n=2;n<k;n++) { ” & vbCrLf & _
“ if(k%n==0) dem++;” & vbCrLf & _
“ if(dem==1) {” & vbCrLf & _
“ System.out.print(k+”" “”);” & vbCrLf & _
“ j++;” & vbCrLf & _
“ }” & vbCrLf & _
“ }” & vbCrLf & _
“ }” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Doan chuong trinh tren cho ket qua la bao nhieu?…Lap vo han”
*Cho doan chuong trinh sau:” & vbCrLf & _
“public class Test {” & vbCrLf & _
“ public static void main(String[] args) {” & vbCrLf & _
“ int k=0,n,dem,j=0;” & vbCrLf & _
“ while(j<3) {” & vbCrLf & _
“ k++;” & vbCrLf & _
“ dem=0; ” & vbCrLf & _
“ for(n=2;n<=k;n++) { ” & vbCrLf & _
“ if(k%n==0) dem++;” & vbCrLf & _
“ }” & vbCrLf & _
“ if(dem==1) {” & vbCrLf & _
“ System.out.print(k+”" “”);” & vbCrLf & _
“ j++;” & vbCrLf & _
“ }” & vbCrLf & _
“ }” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Chuong trinh tren thuc hien cong viec gi?”…In ra 3 so nguyen to dau tien”
*Cho doan chuong trinh sau:” & vbCrLf & _
“String s = “”Nguyen Van An”";” & vbCrLf & _
“String s1,s2 = new String();” & vbCrLf & _
“s = s.trim();” & vbCrLf & _
“for (int i = 0; i < s.length();i++) {” & vbCrLf & _
“ s1 = s.substring(i,i+1);” & vbCrLf & _
“ if (s1.equals(“” “”)) {” & vbCrLf & _
“ s1 = s.substring(i + 1,i + 2);” & vbCrLf & _
“ if (s.equals(“” “”)) continue;” & vbCrLf & _
“ else s2 = s2 + s.substring(i,i + 1);” & vbCrLf & _
“ } else s2 = s2 + s1;” & vbCrLf & _
“}” & vbCrLf & _
“System.out.print(s2);” & vbCrLf & _
@Chuong trinh tren in ra ket qua la bao nhieu?…Nguyen Van An”
*Cho doan chuong trinh sau:” & vbCrLf & _
“String s = “”Nguyen Van An”";” & vbCrLf & _
“String s1,s2;” & vbCrLf & _
“s = s.trim();” & vbCrLf & _
“for (int i = 0; i < s.length();i++) {” & vbCrLf & _
“ s1 = s.substring(i,i+1);” & vbCrLf & _
“ if (s1.equals(“” “”)) {” & vbCrLf & _
“ s1 = s.substring(i + 1,i + 2);” & vbCrLf & _
“ if (s.equals(“” “”)) continue;” & vbCrLf & _
“ else s2 = s2 + s.substring(i,i + 1);” & vbCrLf & _
“ } else s2 = s2 + s1;” & vbCrLf & _
“}” & vbCrLf & _
“System.out.print(s2);” & vbCrLf & _
@Chuong trinh tren in ra ket qua la bao nhieu?…Loi bien dich”
*Cho doan chuong trinh sau:” & vbCrLf & _
“String s = “”abc def ab cdfg abcabc”";” & vbCrLf & _
“String s1 = new String();” & vbCrLf & _
“int dem = 0;” & vbCrLf & _
“for (int i = 0; i < s.length() – 2; i++) {” & vbCrLf & _
“ s1 = s.substring(i,i+3);” & vbCrLf & _
“ if (s1.equals(“”abc”")) dem++;” & vbCrLf & _
“}” & vbCrLf & _
“System.out.print(dem);” & vbCrLf & _
Chuong trinh tren in ra ket qua la bao nhieu?…3″
Cho doan chuong trinh sau:” & vbCrLf & _
“public class Test {” & vbCrLf & _
“ public static void main(String[] args) {” & vbCrLf & _
“ int k,n,dem;” & vbCrLf & _
“ for (k=1000;k<=1020;k++) {” & vbCrLf & _
“ dem=0;” & vbCrLf & _
“ for (n=2;n<=k;n++)” & vbCrLf & _
“ if (k%n==0) dem++;” & vbCrLf & _
“ }” & vbCrLf & _
“ if (dem==1) System.out.print(k+”"”");” & vbCrLf & _
“ }” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Chuong trinh tren in ra ket qua la bao nhieu?…Chuong trinh bao loi”
*Cho doan chuong trinh sau:” & vbCrLf & _
“public class Test {” & vbCrLf & _
“ public static void main(String[] args) {” & vbCrLf & _
“ int k,n,dem;” & vbCrLf & _
“ for (k=1000;k<=1020;k++) {” & vbCrLf & _
“ dem=0;” & vbCrLf & _
“ for (n=2;n<=k;n++) {” & vbCrLf & _
“ if (k%n=0) dem++;” & vbCrLf & _
“ }” & vbCrLf & _
“ if (dem=1) System.out.print(k+”"”");” & vbCrLf & _
“ }” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Chuong trinh tren in ra ket qua la bao nhieu?…Chuong trinh bao loi”
*Cho doan chuong trinh sau:” & vbCrLf & _
“String s= “” Nguyen Van An “”;” & vbCrLf & _
“String s1 = new String();” & vbCrLf & _
“s = s.trim();” & vbCrLf & _
“int i;” & vbCrLf & _
“for (i = s.length() – 1; i >= 0; i–) {” & vbCrLf & _
“ s1 = s.substring(i,i+1);” & vbCrLf & _
“ if (s1.equals(“” “”)) break;” & vbCrLf & _
“}” & vbCrLf & _
“System.out.print(s.substring(i+1));” & vbCrLf & _
@Chuong trinh tren in ra ket qua la bao nhieu?”…An”
*Cho doan chuong trinh sau:” & vbCrLf & _
“String s= “” Nguyen Van An “”;” & vbCrLf & _
“String s1 = new String();” & vbCrLf & _
“s = s.trim();” & vbCrLf & _
“int i;” & vbCrLf & _
“for (i 0; i <=s.length(); i++) {” & vbCrLf & _
“ s1 = s.substring(i,i+1);” & vbCrLf & _
“ if (s1.equals(“” “”)) break;” & vbCrLf & _
“}” & vbCrLf & _
“System.out.print(s.substring(i+1));” & vbCrLf & _
@Chuong trinh tren in ra ket qua la bao nhieu?”…Van An”
*Cho doan chuong trinh sau:” & vbCrLf & _
“String s= “” Nguyen Van An “”;” & vbCrLf & _
“String s1 = new String();” & vbCrLf & _
“s = s.trim();” & vbCrLf & _
“int i;” & vbCrLf & _
“for (i = s.length() – 1; i >= 0; i++) {” & vbCrLf & _
“ s1 = s.substring(i,i+1);” & vbCrLf & _
“ if (s1.equals(“” “”)) break;” & vbCrLf & _
“}” & vbCrLf & _
“System.out.print(s.substring(i+1));” & vbCrLf & _
@Chuong trinh tren in ra ket qua la bao nhieu?…Loi bien dich”
*Cho thu tuc sau:” & vbCrLf & _
“public static float sum(int k){” & vbCrLf & _
“int tong=0;” & vbCrLf & _
“int x;” & vbCrLf & _
“for(x=1;i<=k;x++)” & vbCrLf & _
“tong+=x;” & vbCrLf & _
“return tong;}” & vbCrLf & _
“Trong chuong trinh chinh su dung cau lenh “”System.out.print(1/sum(2))”"” & vbCrLf & _
@Ket qua hien thi se la:…0.3333334″
*Cho thu tuc sau:” & vbCrLf & _
“public static float sum(int k){” & vbCrLf & _
“int tich=0;” & vbCrLf & _
“int x;” & vbCrLf & _
“for(x=1;i<=k;x++)” & vbCrLf & _
“tich*=x;” & vbCrLf & _
“return tich;}” & vbCrLf & _
“Trong chuong trinh chinh su dung cau lenh “”System.out.print(sum(3)/1)”"” & vbCrLf & _
@Ket qua hien thi se la:…0″
*Cho doan ma sau:” & vbCrLf & _
“1:int [] a={3,1,7,0,10}” & vbCrLf & _
“2:int n=5,k,max;” & vbCrLf & _
“3:max=a[0];” & vbCrLf & _
“4: for(k=0;k<n;k++)” & vbCrLf & _
“5: if(max<a[k])” & vbCrLf & _
“6: max=a[k];” & vbCrLf & _
“7: System.out.print(max);” & vbCrLf & _
“8: for(k=0;k<n;k++)” & vbCrLf & _
“9: if(max==a[k])” & vbCrLf & _
“10: System.out.print(k);” & vbCrLf & _
@Ket qua khi thuc hien den dong lenh 7 la:…Loi bien dich”
*Cho doan ma sau:” & vbCrLf & _
“1:int [] a={3,1,7,0,10};” & vbCrLf & _
“2:int n=5,k,max;” & vbCrLf & _
“3:max=a[0];” & vbCrLf & _
“4: for(k=0;k<n;k++)” & vbCrLf & _
“5: if(max<a[k])” & vbCrLf & _
“6: max=a[k];” & vbCrLf & _
“7: System.out.print(max);” & vbCrLf & _
“8: for(k=0;k<n;k++)” & vbCrLf & _
“9: if(max==a[k])” & vbCrLf & _
“10: System.out.print(k);” & vbCrLf & _………….10″
*Cho doan ma sau:” & vbCrLf & _
“1:int [] a={3,1,7,0,10};” & vbCrLf & _
“2:int n=5,k,max;” & vbCrLf & _
“3:max=a[0];” & vbCrLf & _
“4: for(k=0;k<n;k++)” & vbCrLf & _
“5: if(max<a[k])” & vbCrLf & _
“6: max=a[k];” & vbCrLf & _
“7: System.out.print(max);” & vbCrLf & _
“8: for(k=0;k<n;k++)” & vbCrLf & _
“9: if(max==a[k])” & vbCrLf & _
“10: System.out.print(k);” & vbCrLf & _
@thuc hien khoi lenh se hien thi ket qua?…104″
*Cho doan ma sau:” & vbCrLf & _
“1: for(int i=0;i<2;i++){” & vbCrLf & _
“2: for(int j=0;j<3;j++){” & vbCrLf & _
“3: if(i==j){” & vbCrLf & _
“4: continue;” & vbCrLf & _
“5: }” & vbCrLf & _
“6: System.out.println(“”i=”"+i+”" j=”"+j);” & vbCrLf & _
“7: }” & vbCrLf & _
“8: }” & vbCrLf & _
@Dong nao se la mot trong cac ket qua duoc in ra?”…”i = 0 j = 2″
*Cho doan ma sau:” & vbCrLf & _
“1: outer:for(int i=0;i<2;i++){” & vbCrLf & _
“2: for(int j=0;j<3;j++){” & vbCrLf & _
“3: if(i==j){” & vbCrLf & _
“4: continue outer;” & vbCrLf & _
“5: }” & vbCrLf & _
“6: System.out.println(“”i=”"+i+”" j=”"+j);” & vbCrLf & _
“7: }” & vbCrLf & _
“8: }” & vbCrLf & _
@Dong nao se la mot trong cac ket qua duoc in ra?”…“i = 1 j = 0″
*Cho doan ma sau:” & vbCrLf & _
“String s= “” Nguyen Van An ”";” & vbCrLf & _
“String s1 = new String();” & vbCrLf & _
“s = s.trim();” & vbCrLf & _
“int i;” & vbCrLf & _
“for (i 0; i <=s.length(); i++) {” & vbCrLf & _
“ s1 = s.substring(i,i+1);” & vbCrLf & _
“ if (s1.equals(“” “”)) break;” & vbCrLf & _
“}” & vbCrLf & _
“System.out.print(s.substring(0,i));” & vbCrLf & _
@ Ket qua doan ma la bao nhieu khi thuc hien?…”Nguyen”
*Cho doan ma sau:” & vbCrLf & _
“String s = “”010001110001100″”;” & vbCrLf & _
“String s1 = new String();” & vbCrLf & _
“String s2 = new String();” & vbCrLf & _
“for (int i = 0; i < s.length(); i++) {” & vbCrLf & _
“ s1 = s.substring(i,i+1);” & vbCrLf & _
“ if (s1.equals(“”1″”) s1 = “”0″”;” & vbCrLf & _
“ else s1 = “”1″”;” & vbCrLf & _
“ s2 += s1;” & vbCrLf & _
“}” & vbCrLf & _
“System.out.print(s2);” & vbCrLf & _
@Ket qua doan ma la bao nhieu khi thuc hien?”"101110001110011″
*Cho doan ma sau:” & vbCrLf & _
“String s = “”010001110001100″”;” & vbCrLf & _
“String s1 = new String();” & vbCrLf & _
“String s2 = new String();” & vbCrLf & _
“for (int i = 0; i < s.length(); i++) {” & vbCrLf & _
“ s1 = s.substring(i,i+1);” & vbCrLf & _
“ if (s1.equals(“”1″”) s1 = “”1″”;” & vbCrLf & _
“ else s1 = “”0″”;” & vbCrLf & _
“ s2 += s1;” & vbCrLf & _
“}” & vbCrLf & _
“System.out.print(s2);” & vbCrLf & _
@Ket qua doan ma la bao nhieu khi thuc hien?”…”010001110001100″
*Cho doan ma sau:” & vbCrLf & _
“String s = “”010001110001100″”;” & vbCrLf & _
“String s1 = new String();” & vbCrLf & _
“String s2 = new String();” & vbCrLf & _
“for (int i = 0; i < s.length(); i++) {” & vbCrLf & _
“ s1 = s.substring(i,i+1);” & vbCrLf & _
“ if (s1.equals(“”0″”) s1 = “” “”;” & vbCrLf & _
“ else s1 = “”1″”;” & vbCrLf & _
“ s2 += s1;” & vbCrLf & _
“}” & vbCrLf & _
“s2 = s2.trim();” & vbCrLf & _
“System.out.print(s2);” & vbCrLf & _
@Ket qua doan ma la bao nhieu khi thuc hien?”…”1 111 11″
*Cho doan ma sau:” & vbCrLf & _
“String s = “”010001110001100″”;” & vbCrLf & _
“String s1 = new String();” & vbCrLf & _
“String s2 = new String();” & vbCrLf & _
“for (int i = 0; i < s.length(); i++) {” & vbCrLf & _
“ s1 = s.substring(i,i+1);” & vbCrLf & _
“ if (s1.equals(“”0″”) s1 = “”1″”;” & vbCrLf & _
“ else s1 = “” “”;” & vbCrLf & _
“ s2 += s1;” & vbCrLf & _
“}” & vbCrLf & _
“System.out.print(s2);” & vbCrLf & _
@Ket qua doan ma la bao nhieu khi thuc hien?”…”1 111 111 11″
*Cho doan ma sau:” & vbCrLf & _
“int N,k;” & vbCrLf & _
“for (k = 2;k <= N;k++) {” & vbCrLf & _
“ if (N % k == 0) {” & vbCrLf & _
“ System.out.print(k+”" “”);” & vbCrLf & _
“ N = N/k;” & vbCrLf & _
“ k–;” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Neu cho n=42, khi thuc hien doan ma se cho ket qua la bao nhieu?”…”2 3 7”
*Cho doan ma sau:” & vbCrLf & _
“int N;” & vbCrLf & _
“for (k = 2;k <= N;k++) {” & vbCrLf & _
“ if (N % k == 0) {” & vbCrLf & _
“ System.out.print(k+”" “”);” & vbCrLf & _
“ N = N/k;” & vbCrLf & _
“ k–;” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Neu cho n=25, khi thuc hien doan ma se cho ket qua la bao nhieu?…Loi bien dich”
*Cho doan ma sau:” & vbCrLf & _
“int N,k;” & vbCrLf & _
“for (k = 2;k <= N;k++) {” & vbCrLf & _
“ if (N % k == 0) {” & vbCrLf & _
“ System.out.print(k+”" “”);” & vbCrLf & _
“ N = N/k;” & vbCrLf & _
“ k++;” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Neu cho n=25, khi thuc hien doan ma se cho ket qua la bao nhieu?...”5″
*Cho doan ma sau:” & vbCrLf & _
“int N,k;” & vbCrLf & _
“for (k = 2;k <= N;k++) {” & vbCrLf & _
“ if (N % k == 0) {” & vbCrLf & _
“ System.out.print(k+”" “”);” & vbCrLf & _
“ N = N/k;” & vbCrLf & _
“ k++;” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Neu cho n=12, khi thuc hien doan ma se cho ket qua la bao nhieu?…”2 6″
*Cho doan ma sau:” & vbCrLf & _
“int N,k;” & vbCrLf & _
“for (k = 2;k <= N;k++) {” & vbCrLf & _
“ if (N % k == 0) {” & vbCrLf & _
“ System.out.print(k+”" “”);” & vbCrLf & _
“ N = N/k;” & vbCrLf & _
“ k++;” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Neu cho n=42, khi thuc hien doan ma se cho ket qua la bao nhieu?”…2 7″
*Cho doan ma sau:” & vbCrLf & _
“int N,k;” & vbCrLf & _
“for (k = 2;k <= N;k++) {” & vbCrLf & _
“ if (N % k == 0) {” & vbCrLf & _
“ System.out.print(k+”" “”);” & vbCrLf & _
“ N = N/k;” & vbCrLf & _
“ k++;” & vbCrLf & _
“ }” & vbCrLf & _
“}” & vbCrLf & _
@Neu cho N =9, khi thuc hien doan ma se cho ket qua la bao nhieu?…”3″
*Cho doan ma sau:” & vbCrLf & _
“public static void main(String[ ] args) {” & vbCrLf & _
“ float S = 0.0F;” & vbCrLf & _
“ int N=2,k;” & vbCrLf & _
“ for (k = 1; k <= N; k++)” & vbCrLf & _
“ S += 1/sum(k);” & vbCrLf & _
“ System.out.print(S);” & vbCrLf & _
“}” & vbCrLf & _
“public static float sum(int k) {” & vbCrLf & _
“ int tong = 0;” & vbCrLf & _
“ for (int x = 1; x <= k; x++)” & vbCrLf & _
“ tong += x;” & vbCrLf & _
“ return tong;” & vbCrLf & _
“}” & vbCrLf & _
@Ket qua la bao nhieu khi thuc hien doan lenh tren?”…”1.3333334″
*Cho doan ma sau:” & vbCrLf & _
“public static void main(String[ ] args) {” & vbCrLf & _
“ int S = 0;” & vbCrLf & _
“ int N=2,k;” & vbCrLf & _
“ for (k = 1; k <= N; k++)” & vbCrLf & _
“ S += 1/sum(k);” & vbCrLf & _
“ System.out.print(S);” & vbCrLf & _
“}” & vbCrLf & _
“public static float sum(int k) {” & vbCrLf & _
“ int tong = 0;” & vbCrLf & _
“ for (int x = 1; x <= k; x++)” & vbCrLf & _
“ tong += x;” & vbCrLf & _
“ return tong;” & vbCrLf & _
“}” & vbCrLf & _
@Ket qua la bao nhieu khi thuc hien doan lenh tren?”…”1″
*Cho doan ma sau:” & vbCrLf & _
“public static void main(String[ ] args) {” & vbCrLf & _
“ float S = 0.0F;” & vbCrLf & _
“ int N=4,k;” & vbCrLf & _
“ for (k = 1; k <= N; k++)” & vbCrLf & _
“ S += 1/sum(k);” & vbCrLf & _
“ System.out.print(S);” & vbCrLf & _
“}” & vbCrLf & _
“public static float sum(int k) {” & vbCrLf & _
“ int tong = 0;” & vbCrLf & _
“ for (int x = 1; x <= k; x++)” & vbCrLf & _
“ tong += x;” & vbCrLf & _
“ return tong;” & vbCrLf & _
“}” & vbCrLf & _
@Ket qua la bao nhieu khi thuc hien doan lenh tren?”…“1.6″
*Cho doan ma sau:” & vbCrLf & _
“public static void main(String[ ] args) {” & vbCrLf & _
“ float S = 0.0F;” & vbCrLf & _
“ int N=3,k;” & vbCrLf & _
“ for (k = 1; k <= N; k++)” & vbCrLf & _
“ S += 1/sum(k);” & vbCrLf & _
“ System.out.print(S);” & vbCrLf & _
“}” & vbCrLf & _
“public static float sum(int k) {” & vbCrLf & _
“ int tong = 0;” & vbCrLf & _
“ for (int x = 1; x <= k; x++)” & vbCrLf & _
“ tong += x;” & vbCrLf & _
“ return tong;” & vbCrLf & _
“}” & vbCrLf & _
@Ket qua la bao nhieu khi thuc hien doan lenh tren?”…”1.5″
*Cho doan ma sau:” & vbCrLf & _
“public static void main(String[ ] args) {” & vbCrLf & _
“ float S = 0.0F;” & vbCrLf & _
“ int N=2,k;” & vbCrLf & _
“ for (k = 1; k <= N; k++)” & vbCrLf & _
“ S += 1/sum(k);” & vbCrLf & _
“ System.out.print(S);” & vbCrLf & _
“}” & vbCrLf & _
“public static float sum(int k) {” & vbCrLf & _
“ int tong = 0;” & vbCrLf & _
“ for (int x = 1; x <= k; x++)” & vbCrLf & _
“ tong += x;” & vbCrLf & _
“}” & vbCrLf & _
@Ket qua la bao nhieu khi thuc hien doan lenh tren?”…Loi bien dich”
*Cho doan ma sau:” & vbCrLf & _
“1. public static void main(String[ ] args) {” & vbCrLf & _
“2. float S = 0.0F;” & vbCrLf & _
“3. int N=2,k;” & vbCrLf & _
“4. for (k = 1; k <= N; k++)” & vbCrLf & _
“5. S += 1/sum(k);” & vbCrLf & _
“6. System.out.print(S);” & vbCrLf & _
“7. }” & vbCrLf & _
“8. public static float sum(int k) {” & vbCrLf & _
“9. int tong = 0;” & vbCrLf & _
“10. for (int x = 1; x <= k; x++)” & vbCrLf & _
“11. tong += x;” & vbCrLf & _
“12. return tong;” & vbCrLf & _
“13. }” & vbCrLf & _
@Doan chuong trinh tren sai o dong nao?”…Khong co dong nao sai”
*Cho doan ma sau:” & vbCrLf & _
“1. public static void main(String[ ] args) {” & vbCrLf & _
“2. float S = 0.0;” & vbCrLf & _
“3. int N=2,k;” & vbCrLf & _
“4. for (k = 1; k <= N; k++)” & vbCrLf & _
“5. S += 1/sum(k);” & vbCrLf & _
“6. System.out.print(S);” & vbCrLf & _
“7. }” & vbCrLf & _
“8. public static float sum(int k) {” & vbCrLf & _
“9. int tong = 0;” & vbCrLf & _
“10. for (int x = 1; x <= k; x++)” & vbCrLf & _
“11. tong += x;” & vbCrLf & _
“12. return tong;” & vbCrLf & _
“13. }” & vbCrLf & _
@Doan chuong trinh tren sai o dong nao?”…”2″
*Cho doan ma sau:” & vbCrLf & _
“1. public static void main(String[ ] args) {” & vbCrLf & _
“2. float S = 0.0;” & vbCrLf & _
“3. int N=2,k;” & vbCrLf & _
“4. for (k = 1; k <= N; k++)” & vbCrLf & _
“5. S += 1/sum(k);” & vbCrLf & _
“6. system.out.print(S);” & vbCrLf & _
“7. }” & vbCrLf & _
“8. public static float sum(int k) {” & vbCrLf & _
“9. int tong = 0;” & vbCrLf & _
“10. for (int x = 1; x <= k; x++)” & vbCrLf & _
“11. tong += x;” & vbCrLf & _
“12. return tong;” & vbCrLf & _
“13. }” & vbCrLf & _
@Doan chuong trinh tren sai o dong nao?”…”2, 6″
*Cho doan ma sau:” & vbCrLf & _
“1. public static void main(String[ ] args) {” & vbCrLf & _
“2. float S = 0.0F;” & vbCrLf & _
“3. int N=2,k;” & vbCrLf & _
“4. for (k = 1; k <= N; k++)” & vbCrLf & _
“5. S += 1/sum(k);” & vbCrLf & _
“6. System.out.print(S);” & vbCrLf & _
“7. }” & vbCrLf & _
“8. public float sum(int k) {” & vbCrLf & _
“9. int tong = 0;” & vbCrLf & _
“10. for (int x = 1; x <= k; x++)” & vbCrLf & _
“11. tong += x;” & vbCrLf & _
“12. return tong;” & vbCrLf & _
“13. }” & vbCrLf & _
@Doan chuong trinh tren sai o dong nao?”…”8″
*Cho doan ma sau:” & vbCrLf & _
“1. public static void main(String[ ] args) {” & vbCrLf & _
“2. float S = 0.0F;” & vbCrLf & _
“3. int N=2,k;” & vbCrLf & _
“4. for (k = 1; k <= N; k++)” & vbCrLf & _
“5. S += 1/sum(k);” & vbCrLf & _
“6. System.out.print(S);” & vbCrLf & _
“7. }” & vbCrLf & _
“8. public float sum(int k) {” & vbCrLf & _
“9. int tong = 0;” & vbCrLf & _
“10. for (int x = 1; x <= k; x++)” & vbCrLf & _
“11. tong += x;” & vbCrLf & _
“12. return tong” & vbCrLf & _
“13. }” & vbCrLf & _
@Doan chuong trinh tren sai o dong nao?”…”8, 12″
*Cho doan ma sau:” & vbCrLf & _
“1. public static void main(String[ ] args) {” & vbCrLf & _
“2. float S = 0.0F;” & vbCrLf & _
“3. int N=3,k;” & vbCrLf & _
“4. for (k = 1; k <= N; k++)” & vbCrLf & _
“5. S += 1/sum(k);” & vbCrLf & _
“6. System.out.print(S);” & vbCrLf & _
“7. }” & vbCrLf & _
“8. public static float sum(int k) {” & vbCrLf & _
“9. float tong = 0;” & vbCrLf & _
“10. for (int x = 1; x <= k; x++)” & vbCrLf & _
“11. tong +=tich(x);” & vbCrLf & _
“12. return tong;” & vbCrLf & _
“13. }” & vbCrLf & _
“14. public static float tich(int x) {” & vbCrLf & _
“15. int t=1;” & vbCrLf & _
“16. for (int j = 1; j <= x; j++)” & vbCrLf & _
“17. t *= j;” & vbCrLf & _
“18. return t;” & vbCrLf & _
“19. }” & vbCrLf & _
@Khi thuc hien, doan ma tren cho ket qua la bao nhieu?”…”1.4444445″
*Cho doan ma sau:” & vbCrLf & _
“1. public static void main(String[ ] args) {” & vbCrLf & _
“2. float S = 0.0F;” & vbCrLf & _
“3. int N=2,k;” & vbCrLf & _
“4. for (k = 1; k <= N; k++)” & vbCrLf & _
“5. S += 1/sum(k);” & vbCrLf & _
“6. System.out.print(S);” & vbCrLf & _
“7. }” & vbCrLf & _
“8. public static float sum(int k) {” & vbCrLf & _
“9. float tong = 0;” & vbCrLf & _
“10. for (int x = 1; x <= k; x++)” & vbCrLf & _
“11. tong +=tich(x);” & vbCrLf & _
“12. return tong;” & vbCrLf & _
“13. }” & vbCrLf & _
“14. public static float tich(int x) {” & vbCrLf & _
“15. int t=1;” & vbCrLf & _
“16. for (int j = 1; j <= x; j++)” & vbCrLf & _
“17. t *= j;” & vbCrLf & _
“18. return t;” & vbCrLf & _
“19. }” & vbCrLf & _
@Khi thuc hien, doan ma tren cho ket qua la bao nhieu?”…1.3333334″
*Cho doan ma sau:” & vbCrLf & _
“1. public static void main(String[ ] args) {” & vbCrLf & _
“2. float S = 0.0F;” & vbCrLf & _
“3. int N=4,k;” & vbCrLf & _
“4. for (k = 1; k <= N; k++)” & vbCrLf & _
“5. S += 1/sum(k);” & vbCrLf & _
“6. System.out.print(S);” & vbCrLf & _
“7. }” & vbCrLf & _
“8. public static float sum(int k) {” & vbCrLf & _
“9. float tong = 0;” & vbCrLf & _
“10. for (int x = 1; x <= k; x++)” & vbCrLf & _
“11. tong +=tich(x);” & vbCrLf & _
“12. return tong;” & vbCrLf & _
“13. }” & vbCrLf & _
“14. public static float tich(int x) {” & vbCrLf & _
“15. int t=1;” & vbCrLf & _
“16. for (int j = 1; j <= x; j++)” & vbCrLf & _
“17. t *= j;” & vbCrLf & _
“18. return t;” & vbCrLf & _
“19. }” & vbCrLf & _
@Khi thuc hien, doan ma tren cho ket qua la bao nhieu?”…1.4747475”
*Cho doan ma sau:” & vbCrLf & _
“1. public static void main(String[ ] args) {” & vbCrLf & _
“2. float S = 0.0F;” & vbCrLf & _
“3. int N=15,k;” & vbCrLf & _
“4. for (k = 1; k <= N; k++)” & vbCrLf & _
“5. S += 1/sum(k);” & vbCrLf & _
“6. System.out.print(“”1″”);” & vbCrLf & _
“7. }” & vbCrLf & _
“8. public static float sum(int k) {” & vbCrLf & _
“9. float tong = 0;” & vbCrLf & _
“10. for (int x = 1; x <= k; x++)” & vbCrLf & _
“11. tong +=tich(x);” & vbCrLf & _
“12. return tong;” & vbCrLf & _
“13. }” & vbCrLf & _
“14. public static float tich(int x) {” & vbCrLf & _
“15. int t=1;” & vbCrLf & _
“16. for (int j = 1; j <= x; j++)” & vbCrLf & _
“17. t *= j;” & vbCrLf & _
“18. return t;” & vbCrLf & _
“19. }” & vbCrLf & _
@Khi thuc hien, doan ma tren cho ket qua la bao nhieu?”…”1″
*Cho doan ma sau:” & vbCrLf & _
“1. public static void main(String[ ] args) {” & vbCrLf & _
“2. float S = 0.0F;” & vbCrLf & _
“3. int N=3,k;” & vbCrLf & _
“4. for (k = 1; k <= N; k++)” & vbCrLf & _
“5. S += 1/sum(k);” & vbCrLf & _
“6. System.out.print(S);” & vbCrLf & _
“7. }” & vbCrLf & _
“8. public static float sum(int k) {” & vbCrLf & _
“9. float tong = 0;” & vbCrLf & _
“10. for (int x = 1; x <= k; x++)” & vbCrLf & _
“11. tong +=tich(x);” & vbCrLf & _
“12. return tong;” & vbCrLf & _
“13. }” & vbCrLf & _
“14. public static float tich(int x) {” & vbCrLf & _
“15. int t=1;” & vbCrLf & _
“16. for (int j = 1; j <= x; j++)” & vbCrLf & _
“17. t *= j;” & vbCrLf & _
“18. return t;” & vbCrLf & _
“19. }” & vbCrLf & _
@Doan chuong trinh tren sai o dong nao?”…”Khong co dong nao sai”
*Cho doan ma sau:” & vbCrLf & _
“1. public static void main(String[ ] args) {” & vbCrLf & _
“2. float S = 0.0F;” & vbCrLf & _
“3. int N=3,k” & vbCrLf & _
“4. for (k = 1; k <= N; k++)” & vbCrLf & _
“5. S += 1/sum(k);” & vbCrLf & _
“6. System.out.print(S);” & vbCrLf & _
“7. }” & vbCrLf & _
“8. public static float sum(int k) {” & vbCrLf & _
“9. int tong = 0;” & vbCrLf & _
“10. for (int x = 1; x <= k; x++)” & vbCrLf & _
“11. tong +=tich(x);” & vbCrLf & _
“12. return tong;” & vbCrLf & _
“13. }” & vbCrLf & _
“14. public static float tich(int x) {” & vbCrLf & _
“15. int t=1;” & vbCrLf & _
“16. for (int j = 1; j <= x; j++)” & vbCrLf & _
“17. t *= j;” & vbCrLf & _
“18. return t;” & vbCrLf & _
“19. }” & vbCrLf & _
@Doan chuong trinh tren sai o dong nao?”…Khong co dong nao sai”
*Cho doan ma sau:” & vbCrLf & _
“1. public static void main(String[ ] args) {” & vbCrLf & _
“2. float S = 0.0F;” & vbCrLf & _
“3. int N=3,k;” & vbCrLf & _
“4. for (k = 1; k <= N; k++)” & vbCrLf & _
“5. S += 1/sum(k);” & vbCrLf & _
“6. System.out.print(S);” & vbCrLf & _
“7. }” & vbCrLf & _
“8. public static float sum(int k) {” & vbCrLf & _
“9. float tong = 0;” & vbCrLf & _
“10. for (int x = 1; x <= k; x++)” & vbCrLf & _
“11. tong +=tich(x);” & vbCrLf & _
“12. return tong;” & vbCrLf & _
“13. }” & vbCrLf & _
“14. public float tich(int x) {” & vbCrLf & _
“15. int t=1;” & vbCrLf & _
“16. for (j = 1; j <= x; j++)” & vbCrLf & _
“17. t *= j;” & vbCrLf & _
“18. return t;” & vbCrLf & _
“19. }” & vbCrLf & _
@Doan chuong trinh tren sai o dong nao?”…14, 16″
*Cho doan ma sau:” & vbCrLf & _
“1. public static void main(String[ ] args) {” & vbCrLf & _
“2. float S = 0.0;” & vbCrLf & _
“3. int N=3,k;” & vbCrLf & _
“4. for (k = 1; k <= N; k++)” & vbCrLf & _
“5. S += 1/sum(k);” & vbCrLf & _
“6. System.out.print(S);” & vbCrLf & _
“7. }” & vbCrLf & _
“8. public static float sum(int k) {” & vbCrLf & _
“9. float tong = 0;” & vbCrLf & _
“10. for (int x = 1; x <= k; x++)” & vbCrLf & _
“11. tong +=tich(x);” & vbCrLf & _
“12. return tong;” & vbCrLf & _
“13. }” & vbCrLf & _
“14. public static float tich(int x) {” & vbCrLf & _
“15. int t=1;” & vbCrLf & _
“16. for (int j = 1; j <= x; j++)” & vbCrLf & _
“17. t *= j;” & vbCrLf & _
“18. return t” & vbCrLf & _
“19. }” & vbCrLf & _
@Doan chuong trinh tren sai o dong nao?”…”2, 18
