冒泡排序

package com.cn.sotred;

import java.util.Arrays;

public class BubbleSort {
    public static void main(String[] args) {
        int[] a = { 50, 33, 26, 1, 7, 9, 46, 2, 23, 55, 72, 234, 34, 6, 21, 74, 99,
                65, 3, 5, 675, 23 };
        System.out.println(Arrays.toString(bubbleSotr(a)));
        ;
    }
    //将数组竖着放置,小的下标在上,大的下标在下
    private static int[] bubbleSotr(int[] a){
        int temp;
        for (int i = 0; i < a.length-1; i++) {//控制循环次数,同时也指明本遍扫描终点下标,即有序段和无序段分界的下标
            for (int j = a.length-2; j >= i; j--) {//从倒数第二个和倒数第一个开始比较; j >= i用来判断是否已经到了本遍扫描终点
                if (a[j]>a[j+1]) {
                    temp = a[j+1];
                    a[j+1] = a[j];
                    a[j] = temp;
                }
            }
        }
        return a;
    }
}
原文地址:https://www.cnblogs.com/wanjn/p/8576037.html