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public class PrimeExample2{ static void checkPrime(int n){ int i,m=0,flag=0; m=n/2; if(n==0||n==1){ System.out.println(n+" is not prime number"); }else{ for(i=2;i<=m;i++){ if(n%i==0){ System.out.println(n+" is not prime number"); flag=1; break; } } if(flag==0) { System.out.println(n+" is prime number"); } }//end of else } public static void main(String args[]){ checkPrime(1); checkPrime(3); checkPrime(17); checkPrime(20); } }
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