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Isprime.java
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40 lines (30 loc) · 773 Bytes
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import java.util.*;
public class Isprime {
// public static boolean isPrime(int n) {
// for(int i=2; i<=n-1; i++) {
// if(n % i == 0) {
// //completely dividing
// return false;
// }
// }
// return true;
// }
// public static void main(String args[]) {
// System.out.println(isPrime(13));
// }
// }
public static boolean isPrime(int n) {
if(n == 2) {
return true;
}
for (int i=2; i<=Math.sqrt(n); i++) {
if(n % i == 0) {
return false;
}
}
return true;
}
public static void main(String args[]) {
System.out.println(isPrime(16));
}
}