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Shidongan

SimpleNum

Shidongan
Jun 18th, 2019
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  1. bool simpleNum(int num)
  2. {
  3.     if (num % 2 == 0) {
  4.         return false;
  5.     }
  6.     for (int i = 3; i <= sqrt(num); i+=2) {
  7.         if (num % i == 0) {
  8.             return false;
  9.         }
  10.     }
  11.     return true;
  12. }
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