Java学习 之 循环、数组练习

 1 /**
 2    水仙花
 3 */
 4 public class Demo{
 5       public static void main(String[] args){
 6          for(int i = 100 ; i <= 999 ; i++){
 7              int bai = i \ 100 % 10;
 8              int shi = i \ 10 % 10;
 9              int ge = i % 10;
10          if(i == bai*bai*bai + shi*shi*shi + ge*ge*ge);
11             System.out.println(i);
12           }
13       }
14 }
15 
16 /**
17   冒泡排序
18 */
19 public class Demo2{
20     public static void main(String[] args){
21      int[] arr = {4,2,5,3};   
22      for(int i = 0 ; i < arr.length ; i++){
23        for(int j = 0 ; j < arr.length-i-1 ; j++){
24             if(arr[j] > arr[j+1]){
25                 int temp = arr[j];
26                 arr[j] = arr[j+1];
27                 arr[j+1] = temp;
28              }
29           
30           }
           System.out.println(arr[i]);
31        }
32     }
33 }
34