In the below code, how many iterations will this loop execute?

public class Main {
public static void main(String[] args) {
int v = -1;
int i = 0;

while (i

Question

In the below code, how many iterations will this loop execute?

public class Main {
    public static void main(String[] args) {
        int v = -1;
        int i = 0;
        
        while (i < 10) {
            if (i < 5) {
                System.out.println(v);
            }
            i++;
        }
    }
}

BlackTom AI · Accepted Answer

The while loop's condition i < 10 causes i to take integer values 0 through 9, so the body executes once for each of those ten values.

Relevant concepts:
- A while loop checks its boolean condition before each iteration.
- i++ increments i after the body completes.
- The if (i < 5) only controls whether System.out.println(v) runs; it does not affect the loop iteration count.
- Loop termination occurs when the condition evaluates to false.

Step-by-step trace (showing check, body, increment):
1. Initialize: i = 0.
2. Check condition: i < 10 → 0 < 10 is true → enter iteration 1. Inside: i < 5 is true so print v; then i++ makes i = 1.
3. Check: 1 < 10 true → iteration 2. i < 5 true → print; i++ → i = 2.
4. Check: 2 < 10 true → iteration 3. i < 5 true → print; i++ → i = 3.
5. Check: 3 < 10 true → iteration 4. i < 5 true → print; i++ → i = 4.
6. Check: 4 < 10 true → iteration 5. i < 5 true → print; i++ → i = 5.
7. Check: 5 < 10 true → iteration 6. i < 5 false → no print; i++ → i = 6.
8. Check: 6 < 10 true → iteration 7. no print; i++ → i = 7.
9. Check: 7 < 10 true → iteration 8. no print; i++ → i = 8.
10. Check: 8 < 10 true → iteration 9. no print; i++ → i = 9.
11. Check: 9 < 10 true → iteration 10. no print; i++ → i = 10.
12. Check: 10 < 10 false → loop terminates.

All intermediate i values executed: 0,1,2,3,4,5,6,7,8,9 — ten iterations total.

Why the correct answer is 10:
- The loop condition permits exactly ten pre-increment values (0–9).
- The presence of the if statement affects only output frequency (prints occur for i = 0..4, i.e., five prints) but not the count of iterations.

Why other counts would be wrong:
- Answer 5 would count prints, not iterations.
- Answer infinite would be wrong because i is incremented each iteration, ensuring termination.

Final confirmation: the loop executes 10 iterations (matches the provided answer).

In the below code, how many iterations will this loop execute? public class Main { public static void main(String[] args) { int v = -1; int i = 0; while (i < 10) { if (i < 5) { System.out.println(v); } i++; } } }数值题

类似问题

How many times are the while and for loops run in the following code? Count the total number of iterations from both the while loop and for loop. p = 32 t = 8 while t < p: t = t + np.floor(p/np.pi) for k in range(0,10,2): p = p+2

How many times is the following loop executed? As in, how many times will the control reach loop body?for(int i = 10; i < 20; i+=2) { //loop body}

You own a bond that pays $64 in interest annually. The face value is $1,000 and the current market price is $1,021.61. The bond matures in 11 years. What is the yield to maturity?

Which of the following statements is CORRECT?

It will cost $9,600 to acquire an ice cream cart that is expected to produce cash inflows of $3,600 a year for three years. After the three years, the cart is expected to be worthless. What is the payback period?

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单