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Test: Loops - 2 - EmSAT Achieve MCQ


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20 Questions MCQ Test Java for EmSAT Achieve - Test: Loops - 2

Test: Loops - 2 for EmSAT Achieve 2024 is part of Java for EmSAT Achieve preparation. The Test: Loops - 2 questions and answers have been prepared according to the EmSAT Achieve exam syllabus.The Test: Loops - 2 MCQs are made for EmSAT Achieve 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Loops - 2 below.
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Test: Loops - 2 - Question 1

Which loop structure in Java allows the code block to be executed at least once, even if the condition is false initially?

Detailed Solution for Test: Loops - 2 - Question 1

The do-while loop structure executes the code block at least once, even if the condition is false initially.

Test: Loops - 2 - Question 2

What is the purpose of a loop's initialization statement?

Detailed Solution for Test: Loops - 2 - Question 2

The initialization statement in a loop is used to initialize or set the loop counter and is typically used to increment or decrement the counter variable.

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Test: Loops - 2 - Question 3

Which loop structure is best suited for iterating over an array or a collection?

Detailed Solution for Test: Loops - 2 - Question 3

The for loop structure is best suited for iterating over an array or a collection since it provides a concise way to define the initialization, condition, and update statements in a single line.

Test: Loops - 2 - Question 4

What is the output of the following code snippet?
int i = 0;
while (i < 5) {
    System.out.print(i + " ");
    i++;
}

Detailed Solution for Test: Loops - 2 - Question 4

The code snippet initializes 'i' to 0 and then enters the while loop. It prints the value of 'i', increments 'i' by 1, and repeats the process until 'i' is no longer less than 5.

Test: Loops - 2 - Question 5

What is the output of the following code snippet?
for (int i = 10; i > 0; i -= 2) {
    System.out.print(i + " ");
}

Detailed Solution for Test: Loops - 2 - Question 5

The for loop initializes 'i' to 10 and iterates as long as 'i' is greater than 0. In each iteration, it prints the value of 'i' and decrements 'i' by 2.

Test: Loops - 2 - Question 6

What is the purpose of the 'break' statement in a loop?

Detailed Solution for Test: Loops - 2 - Question 6

The 'break' statement is used to terminate the current iteration of a loop and move to the next iteration or exit the loop if necessary.

Test: Loops - 2 - Question 7

What is the output of the following code snippet?
int i = 0;
do {
    System.out.print(i + " ");
    i++;
} while (i < 5);

Detailed Solution for Test: Loops - 2 - Question 7

The do-while loop structure executes the code block first and then checks the condition. In this case, the code block is executed as long as 'i' is less than 5. It prints the value of 'i' and increments 'i' by 1.

Test: Loops - 2 - Question 8

Which loop structure is best suited when the number of iterations is known in advance?

Detailed Solution for Test: Loops - 2 - Question 8

The for loop structure is best suited when the number of iterations is known in advance because it allows you to define the initialization, condition, and update statements in a single line.

Test: Loops - 2 - Question 9

What is the output of the following code snippet?
int i = 5;
while (i > 0) {
    System.out.print(i + " ");
    i--;
}

Detailed Solution for Test: Loops - 2 - Question 9

The while loop starts with 'i' initialized to 5 and prints the value of 'i'. It then decrements 'i' by 1 in each iteration until 'i' is no longer greater than 0.

Test: Loops - 2 - Question 10

What is the purpose of the 'continue' statement in a loop?

Detailed Solution for Test: Loops - 2 - Question 10

The 'continue' statement is used to skip the remaining statements in a loop and move to the next iteration, without terminating the loop entirely.

Test: Loops - 2 - Question 11

What is the output of the following code snippet?
int sum = 0;
for (int i = 1; i <= 5; i++) {
    sum += i;
}
System.out.println(sum);

Detailed Solution for Test: Loops - 2 - Question 11

The for loop initializes 'sum' to 0 and iterates from 1 to 5. In each iteration, it adds the value of 'i' to 'sum'. After the loop finishes, the value of 'sum' is printed, which is the sum of the numbers from 1 to 5 (1 + 2 + 3 + 4 + 5 = 15).

Test: Loops - 2 - Question 12

What is the output of the following code snippet?
int x = 3;
while (x > 0) {
    System.out.print(x + " ");
    x--;
}

Detailed Solution for Test: Loops - 2 - Question 12

The while loop starts with 'x' initialized to 3 and prints the value of 'x'. It then decrements 'x' by 1 in each iteration until 'x' is no longer greater than 0.

Test: Loops - 2 - Question 13

What is the output of the following code snippet?
int i = 0;
do {
    System.out.print(i + " ");
    i += 2;
} while (i < 5);

Detailed Solution for Test: Loops - 2 - Question 13

The do-while loop initializes 'i' to 0 and iterates as long as 'i' is less than 5. In each iteration, it prints the value of 'i' and increments 'i' by 2.

Test: Loops - 2 - Question 14

What is the output of the following code snippet?
int i = 10;
do {
    System.out.print(i + " ");
    i -= 3;
} while (i > 0);

Detailed Solution for Test: Loops - 2 - Question 14

The do-while loop initializes 'i' to 10 and iterates as long as 'i' is greater than 0. In each iteration, it prints the value of 'i' and decrements 'i' by 3.

Test: Loops - 2 - Question 15

What is the output of the following code snippet?
int i = 0;
while (i < 5) {
    System.out.print(i + " ");
    i++;
    if (i == 3) {
        break;
    }
}

Detailed Solution for Test: Loops - 2 - Question 15

The while loop starts with 'i' initialized to 0 and prints the value of 'i'. It then increments 'i' by 1 in each iteration. However, when 'i' becomes 3, the break statement is encountered, which terminates the loop.

Test: Loops - 2 - Question 16

What is the output of the following code snippet?
int i = 0;
while (i < 5) {
    if (i % 2 == 0) {
        i++;
        continue;
    }
    System.out.print(i + " ");
    i++;
}

Detailed Solution for Test: Loops - 2 - Question 16

The while loop starts with 'i' initialized to 0 and increments 'i' by 1 in each iteration. If 'i' is even, it skips the remaining statements using the continue statement. Therefore, only odd values of 'i' are printed.

Test: Loops - 2 - Question 17

What is the output of the following code snippet?
int i = 0;
while (i < 3) {
    int j = 0;
    while (j < 2) {
        System.out.print(i + "" + j + " ");
        j++;
    }
    i++;
}

Detailed Solution for Test: Loops - 2 - Question 17

The outer while loop initializes 'i' to 0 and increments 'i' by 1 in each iteration. The inner while loop initializes 'j' to 0 and increments 'j' by 1 in each iteration. The combination of 'i' and 'j' is printed in each iteration of the inner loop.

Test: Loops - 2 - Question 18

What is the output of the following code snippet?
int i = 1;
while (i <= 3) {
    for (int j = 0; j < i; j++) {
        System.out.print("*");
    }
    System.out.println();
    i++;
}

Detailed Solution for Test: Loops - 2 - Question 18

The outer while loop starts with 'i' initialized to 1 and increments 'i' by 1 in each iteration. The inner for loop starts with 'j' initialized to 0 and increments 'j' by 1 in each iteration. The number of asterisks printed in each iteration of the inner loop corresponds to the value of 'i'.

Test: Loops - 2 - Question 19

What is the output of the following code snippet?
int i = 2;
while (i <= 6) {
    System.out.print(i + " ");
    i += 2;
}

Detailed Solution for Test: Loops - 2 - Question 19

The while loop starts with 'i' initialized to 2 and increments 'i' by 2 in each iteration. It prints the value of 'i' in each iteration until 'i' is no longer less than or equal to 6.

Test: Loops - 2 - Question 20

What is the output of the following code snippet?
int i = 1;
while (i < 5) {
    if (i == 3) {
        i++;
        continue;
    }
    System.out.print(i + " ");
    i++;
}

Detailed Solution for Test: Loops - 2 - Question 20

The while loop starts with 'i' initialized to 1 and increments 'i' by 1 in each iteration. If 'i' is equal to 3, it skips the remaining statements using the 'continue' statement. Therefore, the number 3 is not printed in the output.

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