Nested Iteration

AP Computer Science A· difficulty 4/5

public static int run() {
    int x = 0;
    for (int i = 1; i <= 3; i++) {
        for (int j = 1; j <= i; j++) {
            if (j == i) break;
            x += j;
        }
    }
    return x;
}
// Call: System.out.println(run());

What is printed?

A
$10$
B
$4$
check_circle
C
$3$
D
$6$

Explanation

i=1: j=1, j==i breaks immediately, add 0. i=2: j=1 (add 1), j=2 break. i=3: j=1(add1), j=2(add2), j=3 break. Sum = 0+1+1+2 = 4.

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