C# check prime
using System; using System.Collections.Generic; using System.IO; class Solution { static bool isPrime( int n) { for ( int i= 2 ;i<=Math.Sqrt(n);i++) { if (n%i== 0 ) { return false ; } } return true ; } static void Main(String[] args) { /* Enter your code here. Read input from STDIN. Print output to STDOUT. Yo...