java 冒泡排序

package com.liu;

public class BubbleSort {
	public static void main(String[] args){
		int a[] = {5,4,3,2,1};
		for(int i=0;i<a.length;i++){
			System.out.print(a[i] + "  ");
		}
		int temp;
		for(int i=a.length-1;i>0;i--){
			for(int j=0;j<i;j++){
				if(a[j]>a[j+1]){
					temp = a[j];
					a[j] = a[j+1];
					a[j+1] = temp;
				}
			}
		}
		
		System.out.println();
		for(int i=0;i<a.length;i++){
			System.out.print(a[i] + "  ");
		}
	}
}