Bài kiểm tra trắc nghiệm về JAVA P6

1. int i=0;

2. do {

3. i += 1;

4. } while (i == 0);

5. System.out.println(“i = “ + i);

int i = 0;

int s = 0;

for ( ; ; ) {

if  i == 3 break;

s = s + i;

i++;

}

1. int i = 0;

2. int s = 0;

3. for ( ; ; ) {

4. if i == 3 break;

5. s = s + i;

6. i++;

7. }

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”);

}

}

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. }

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”);
}
}

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.”);

}

}

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.”);

}

}

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.”);

}

}