题解 | #判断质数#

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Main main = new Main();
        Scanner scan = new Scanner(System.in);
        int number = scan.nextInt();
        System.out.println(main.isPrimeNumber(number));
    }

    public Boolean isPrimeNumber(int number) {

        //write your code here......
        if(number<2){
            return  false;
        }
        int sqrtN = (int)Math.sqrt(number);
        for (int i = 2; i <= sqrtN; i++) {
            if(number%i==0){
                return false;
            }
        }
        return true;
    }
 }