Weird output of for loop [duplicate]

Question

Why is the output of the following for loop 2 2 2?

for (int i = 0, j = 2; i < 3; i++, j--) {
    System.out.print(i + j + " "); // why is this 2 2 2 ?
}

bcoz every time you are increasing value of i and decreasing value of j by 1...so net effect is no change in the i+j — Shadow Droid
– Shadow Droid, Commented Nov 7, 2015 at 13:58

Ben Aubin · Accepted Answer · 2015-11-07 13:57:39Z

3

i + j is always 2, as it does integer addition. So...

You can use j + "" + i + " ", which adds j to a string, instead of to a number.

answered Nov 7, 2015 at 13:57

Ben Aubin

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Comments

Bon · Accepted Answer · 2015-11-07 13:58:56Z

1

Because i + j is evaluated as sum of integers first, use i + "" + j so that they are evaluated as string concatenation.

    for (int i = 0, j = 2; i < 3; i++, j--) {
        System.out.print(i + "" + j + " "); // gives your 02 11 20
    }

answered Nov 7, 2015 at 13:58

Bon

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