public class Bubble_Sort { public static void main(String[] args) { int[] arr={4,3,2,5,7,9,8,1,6}; System.out.print("排序前:"); for(int i=0;i<arr.length;i++) { System.out.print(arr[i]+" "); } for(int i=0;i<arr.length-1;i++) { for(int j=0;j<arr.length-1;j++) { if(arr[j]>arr[j+1]) { int temp; temp=arr[j]; arr[j]=arr[j+1]; arr[j+1]=temp; } } } System.out.println(); System.out.print("排序后:"); for(int i=0;i<arr.length;i++) { System.out.print(arr[i]+" "); } } }