java编程思想 第四章 练习4

写一个程序，使用两个嵌套的for循环和取余操作符（%）来探测和打印素数（只能被其自身和1整除，而不能被其他数字整除的整数）
/** * ****************** Exercise 4 ****************** * Write a program to detect and print prime numbers * (integers evenly divisible only by themselves * and 1), using two nested for loops and the * modulus operator (%). ************************************************ * Created by yule on 2017/10/30 22:16. */

private static void findPrimes(int max) {    boolean primes;    for(int i = 1; i <= max; i++){        primes = true;        //排除自身和1        for(int j = 2; j < i; j++){            if(i % j == 0){                primes = false;            }        }        if(primes){            System.out.print(i + "  ");        }    }}