Java loop inside a loop

Question

What I want to do here is a loop inside a loop and I want to increment the inner loop by the value of the counter in the outer loop.

The error I get is "Not a statement", pointing at "b + s ) inside the inner for-loop

for( int s =1; s < 100; s++){
    if( 100 % s == 0){
        for( int b = 0; b < 100; b + s ){
            locker[b] = locker[b] * (-1);
        }
    }
}

Is my goal achievable at all?

b is the counter for the inner loop and the value is supposed to increment by s from the outer-loop — losertheone
– losertheone, Commented Apr 7, 2014 at 22:07
Also, to save a small operation, you can change locker[b] = locker[b] * (-1); to locker[b] = -locker[b]; — Sunny Patel
– Sunny Patel, Commented Apr 7, 2014 at 22:11

2 revs · Accepted Answer · 2017-05-23 12:05:37Z

2

Try changing this line:

for( int b = 0; b < 100; b + s ){

Into:

for( int b = 0; b < 100; b += s ){

This operator, also known as the addition assignment operator, will add s to b's original value and store it back into b.

Information is from Azure's comment.

edited May 23, 2017 at 12:05

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2 revs
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Comments

Mik378 · Accepted Answer · 2014-04-07 22:16:59Z

0

Where is b + s result stored?

What would be the point to let the third part's result of for loop, "volatilized"? Maybe for side effects only..but would be too hidden.. not recommended.

Without a storing variable (pleonasm :)), your loop would end up with the same outcome at each step.

Thus, b += s would make more sense since b would store each new value, then usable in your loop content.

edited Apr 7, 2014 at 22:16

answered Apr 7, 2014 at 22:11

Mik378

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