java数组--冒泡排序

Posted 2020-09-03 浪、少

 1 package demo;
 2 
 3 import java.util.Arrays;
 4 
 5 public class Demo02 {
 6     public static void main(String[] args) {
 7         int[] arr = new int[10];
 8         for(int i=0; i<arr.length; i++){
 9             arr[i] = (int) (Math.random()*100);
10         }
11         System.out.println("冒泡排序前：");
12         System.out.println("第"+(0)+"次："+Arrays.toString(arr));
13         
14         bubbleSort(arr);
15         System.out.println("冒泡排序前：");
16         System.out.println("第"+(0)+"次："+Arrays.toString(arr));
17     }
18     /*
19      * 冒泡排序
20      */
21     public static void bubbleSort(int a[]) {   
22        for (int i = 0; i < a.length - 1; i++) {   
23                for (int j = 0; j < a.length - 1; j++) {   
24                    if (a[j] > a[j + 1]) {   
25                        int temp = a[j];   
26                        a[j] = a[j + 1];   
27                        a[j + 1] = temp;   
28                    }   
29             }
30                System.out.println("第"+(i+1)+"次："+Arrays.toString(a));
31        }
32     }   
33 }