打印出100以内的质数，一行显示5个，（质数是只能被1跟自身整除的数，1不是质数）
public class PrimeNumNew { public static void main(String[] args) { // TODO Auto-generated method stub int count =0; for (int j = 2; j <= 100; j++) { if(PrimeNum(j) == 1) { count=count+1; if(count%6==0){ System.out.println();} else System.out.print(j+” “); } } } static int PrimeNum(int num) { for (int i = 2; i < num; i++) { if (num % i == 0) { return 0; } } return 1; } }
