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Safety for checking MOD for negative values

/ Published in: Java
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-13%2 = -1 so this might cause problem in your program sometime. So always write your code in such a way that it never cause any problem in sleep also.. :) Use anyone of the following code snippet.

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  1. int mod(int x, int m) {
  2.     return (x%m + m)%m;
  3. }
  4.  
  5. int mod(int x, int m) {
  6.     int r = x%m;
  7.     return r<0 ? r+m : r;
  8. }

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