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package Maths;
import java.util.Scanner;
public class PrimeCheck {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter a number: ");
int n = scanner.nextInt();
if (isPrime(n)) {
System.out.println(n + " is a prime number");
} else {
System.out.println(n + " is not a prime number");
}
scanner.close();
}
/***
* Checks if a number is prime or not
* @param n the number
* @return {@code true} if {@code n} is prime
*/
public static boolean isPrime(int n) {
if (n == 2) {
return true;
}
if (n < 2 || n % 2 == 0) {
return false;
}
for (int i = 3, limit = (int) Math.sqrt(n); i