JAVA常见算法题(三十一)---冒泡排序

package com.jege.spring.boot.hello.world;


/**
 * java算法之冒泡排序<br>
 * 将数组按照从大到小的顺序排列<br>
 * 
 * 
 * @author Administrator
 *
 */
public class BubbleSort{
    public static void main(String[] args){
        int score[] = {67, 69, 75, 87, 89, 90, 99, 100};
        for (int i = 0; i < score.length -1; i++){    //最多做n-1趟排序
            for(int j = 0 ;j < score.length - i - 1; j++){    //对当前无序区间score[0......length-i-1]进行排序(j的范围很关键，这个范围是在逐步缩小的)
                if(score[j] < score[j + 1]){    //把小的值交换到后面
                    int temp = score[j];
                    score[j] = score[j + 1];
                    score[j + 1] = temp;
                }
            }            
            System.out.print("第" + (i + 1) + "次排序结果：");
            for(int a = 0; a < score.length; a++){
                System.out.print(score[a] + "\t");
            }
            System.out.println("");
        }
            System.out.print("最终排序结果：");
            for(int a = 0; a < score.length; a++){
                System.out.print(score[a] + "\t");
       }
    }
}

 

运行结果: