冒泡排序算法

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class Bubble : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        int[] arrayNum = new int[10];
        arrayNum[0] = 100;
        arrayNum[1] = 20;
        arrayNum[2] = 80;
        arrayNum[3] = 56;
        arrayNum[4] = 98;
        arrayNum[5] = 1;
        arrayNum[6] = 6;
        arrayNum[7] = 9;
        arrayNum[8] = 23;
        arrayNum[9] = 21;

        arrayNum = BubbleSort(arrayNum); //调用排序算法

        string str = "{0},{1},{2},{3},{4},{5},{6},{7},{8},{9}";
        str = string.Format(str, arrayNum[0], arrayNum[1], arrayNum[2], arrayNum[3], arrayNum[4], arrayNum[5], arrayNum[6], arrayNum[7], arrayNum[8], arrayNum[9]);
        Response.Write(str);
    }

    /// <summary>
    /// 冒泡排序算法
    /// </summary>
    /// <param name="arrayNum">要排序的数组</param>
    /// <returns></returns>
    private int[] BubbleSort(int[] arrayNum)
    {
        return SortMethod(arrayNum);
    }

    private static int[] SortMethod(int[] arrayNum)
    {
        int i, j, k;//k为临时寄存器
        bool exchange;//交换标志   

        for (i = 1; i < arrayNum.Length; i++)
        {
            exchange = false;
            for (j = arrayNum.Length - 1; j >= i; j--)
            {
                if (arrayNum[j - 1] > arrayNum[j])
                {
                    k = arrayNum[j];
                    arrayNum[j] = arrayNum[j - 1];
                    arrayNum[j - 1] = k;
                    exchange = true;
                }
            }

            if (!exchange)
            {
                break;
            }
        }

        return arrayNum;
    }
}