编辑器
public class Main { public static void main(String[] args) { int n = 29; boolean isPrime = n > 1; for (int i = 2; i * i <= n; i++) { if (n % i == 0) { isPrime = false; break; } } System.out.println(n + (isPrime ? " is prime" : " is not prime")); } }
29 is prime
编辑器