package Com; //i%10==7是指个位(只能一个)被7整除 //i/10%10==7是指在/10取得十位前提下在%10确保余数等于7 //i%7==0是指整体下被7整除 public class Demon19 { public static void main(String[] args) { for (int i = 1; i <=100;i++){ if(i%7==0||i/10%10==7||i%10==0){ System.out.println(i); } } } }