1 public class Main {
 2     public static void main(String[] args) {
 3         for(int i = 1000; i <= 9999; i++){
 4             int a = i / 1000;            //千位
 5             int b = i % 1000 / 100;        //百位
 6             int c = i % 100 / 10;        //十位
 7             int d = i % 10;                //个位
 8             if(a + b + c + d == 10){
 9                 System.out.println(i);
10             }
11         }
12     }
13 }