is Prime Number - CSharp System

CSharp examples for System:Math Number

  1. HOME
  2. CSharp
  3. System
  4. Math Number

Description

is Prime Number

Demo Code


using System;//from   w  ww.  jav a2  s  . c  o  m

public class Main{
        public static bool isPrime(long n) {
         long current = 2;
         var currentThreshold = n;

         if (n == 2) {
            return true;
         }

         while (current < currentThreshold) {
            if (n % current != 0) {
               currentThreshold = n / current;
            }
            else {
               return false;
            }

            current++;
         }

         return true;
      }
        public static bool isPrime(int n) {
         var current = 2;
         var currentThreshold = n;

         if (n == 2) {
            return true;
         }

         while (current < currentThreshold) {
            if (n % current != 0) {
               currentThreshold = n / current;
            }
            else {
               return false;
            }

            current++;
         }

         return true;
      }
}

Related Tutorials