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Test: Loops - 2 - EmSAT Achieve MCQ

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20 Questions MCQ Test - Test: Loops - 2

Test: Loops - 2 for EmSAT Achieve 2024 is part of 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

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

A.
for loop
B.
while loop
C.
do-while loop
D.
nested loop

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

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

A.
To define the loop's condition
B.
To increment or decrement the loop counter
C.
To execute the loop's code block
D.
To terminate the loop

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

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

A.
for loop
B.
while loop
C.
do-while loop
D.
nested loop

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

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

A.
0 1 2 3 4
B.
1 2 3 4 5
C.
0 1 2 3 4 5
D.
This code results in an infinite loop

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

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

A.
10 8 6 4 2
B.
2 4 6 8 10
C.
1 3 5 7 9
D.
This code results in an infinite loop

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

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

A.
To terminate the current iteration of the loop
B.
To skip the remaining statements in the loop and move to the next iteration
C.
To terminate the loop entirely
D.
To restart the loop from the beginning

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

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

A.
0 1 2 3 4
B.
1 2 3 4 5
C.
0 1 2 3 4 5
D.
This code results in an infinite loop

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

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

A.
for loop
B.
while loop
C.
do-while loop
D.
nested loop

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

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

A.
5 4 3 2 1
B.
1 2 3 4 5
C.
0 1 2 3 4
D.
This code results in an infinite loop

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

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

A.
To terminate the loop entirely
B.
To skip the remaining statements in the loop and move to the next iteration
C.
To restart the loop from the beginning
D.
To skip a specific number of iterations in the 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

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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);

A.
5
B.
10
C.
15
D.
25

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

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

A.
3 2 1
B.
1 2 3
C.
0 1 2
D.
1 1 1

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

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

A.
0 2 4
B.
2 4 6
C.
0 1 2 3 4
D.
This code results in an infinite loop

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

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

A.
10 7 4 1
B.
1 4 7 10
C.
10 8 6 4 2
D.
This code results in an infinite loop

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

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

A.
0 1 2
B.
0 1 2 3 4
C.
0 1
D.
0 1 3 4

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

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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++;
}

A.
0 1 2 3 4
B.
1 3
C.
1 3 5
D.
1 3 5 7 9

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

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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++;
}

A.
00 01 10 11 20 21
B.
00 10 20 01 11 21
C.
00 01 11 02 12 22
D.
00 01 10 11 12 20 21 22

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

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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++;
}

A.
*
**
B.
***
**
C.
*
***
D.
***

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

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

A.
2 4 6
B.
2 4 6 8
C.
2 3 4 5 6
D.
4 6 8

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

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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++;
}

A.
1 2 3 4
B.
1 2 4
C.
1 2 4 5
D.
1 4

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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Loops - 2 MCQs with Answers

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