Sort Algorithms

 

#region  Copyright (c) 2005 Noble Spirit Corporation.
/*
{*******************************************************************}
{                                                                   }
{                Test Sort Algorithms DEVELOPER NOTE                    }
{                                                                

    }
{        Author            :        Anhr                                }
{       Created Time    :        10/20/2005                            }
{       Last Modify Time:        10/23/2005                            }
{       This File Memo    :                                            }
{                                                                  

  }
{                                                                   }
{                                                                

    }
{       The Modification Record :                                    }
{                                                                   }
{                                                                   }
{                                                                

    }
{                                                                   }
{*******************************************************************}
*/
#endregion        

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;

namespace T_Thread
{
    /// <summary>
    /// Algorithms 的摘要说明。
    /// </summary>
    public class Algorithms : System.Windows.Forms.Form
    {
        private System.Windows.Forms.TextBox tbxInput;
        private System.Windows.Forms.Button btnSort;
        private System.Windows.Forms.Label lblOutput;
        private System.Windows.Forms.GroupBox groupBox1;
        private System.Windows.Forms.RadioButton rbBubble;
        private System.Windows.Forms.RadioButton rbSelection;
        private System.Windows.Forms.RadioButton rbInsert;
        private System.Windows.Forms.Button btnClear;
        private System.Windows.Forms.RadioButton rbShell;
        /// <summary>
        /// 必需的设计器变量。
        /// </summary>
        private System.ComponentModel.Container components = null;

        public Algorithms()
        {
            //
            // Windows 窗体设计器支持所必需的
            //
            InitializeComponent();
            //
            // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
            //
        }

        /// <summary>
        /// 清理所有正在使用的资源。
        /// </summary>
        protected override void Dispose( bool disposing )
        {
            if( disposing )
            {
                if(components != null)
                {
                    components.Dispose();
                }
            }
            base.Dispose( disposing );
        }

        #region Windows 窗体设计器生成的代码
        /// <summary>
        /// 设计器支持所需的方法 - 不要使用代码编辑器修改
        /// 此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {
            this.tbxInput = new System.Windows.Forms.TextBox();
            this.btnSort = new System.Windows.Forms.Button();
            this.lblOutput = new System.Windows.Forms.Label();
            this.groupBox1 = new System.Windows.Forms.GroupBox();
            this.rbBubble = new System.Windows.Forms.RadioButton();
            this.rbSelection = new System.Windows.Forms.RadioButton();
            this.rbInsert = new System.Windows.Forms.RadioButton();
            this.btnClear = new System.Windows.Forms.Button();
            this.rbShell = new System.Windows.Forms.RadioButton();
            this.groupBox1.SuspendLayout();
            this.SuspendLayout();
            // 
            // tbxInput
            // 
            this.tbxInput.Location = new System.Drawing.Point(16, 8);
            this.tbxInput.Name = "tbxInput";
            this.tbxInput.Size = new System.Drawing.Size(216, 21);
            this.tbxInput.TabIndex = 0;
            this.tbxInput.Text = "";
            // 
            // btnSort
            // 
            this.btnSort.Location = new System.Drawing.Point(24, 112);
            this.btnSort.Name = "btnSort";
            this.btnSort.Size = new System.Drawing.Size(88, 23);
            this.btnSort.TabIndex = 1;
            this.btnSort.Text = "Sort";
            this.btnSort.Click += new System.EventHandler(this.btnSort_Click);
            // 
            // lblOutput
            // 
            this.lblOutput.Location = new System.Drawing.Point(16, 144);
            this.lblOutput.Name = "lblOutput";
            this.lblOutput.Size = new System.Drawing.Size(216, 24);
            this.lblOutput.TabIndex = 2;
            this.lblOutput.Text = "Result";
            // 
            // groupBox1
            // 
            this.groupBox1.Controls.Add(this.rbShell);
            this.groupBox1.Controls.Add(this.rbSelection);
            this.groupBox1.Controls.Add(this.rbBubble);
            this.groupBox1.Controls.Add(this.rbInsert);
            this.groupBox1.Location = new System.Drawing.Point(16, 32);
            this.groupBox1.Name = "groupBox1";
            this.groupBox1.Size = new System.Drawing.Size(216, 72);
            this.groupBox1.TabIndex = 3;
            this.groupBox1.TabStop = false;
            this.groupBox1.Text = "Sort Mode";
            // 
            // rbBubble
            // 
            this.rbBubble.Checked = true;
            this.rbBubble.Location = new System.Drawing.Point(24, 16);
            this.rbBubble.Name = "rbBubble";
            this.rbBubble.Size = new System.Drawing.Size(64, 24);
            this.rbBubble.TabIndex = 0;
            this.rbBubble.TabStop = true;
            this.rbBubble.Text = "Bubble";
            // 
            // rbSelection
            // 
            this.rbSelection.Location = new System.Drawing.Point(24, 40);
            this.rbSelection.Name = "rbSelection";
            this.rbSelection.Size = new System.Drawing.Size(88, 24);
            this.rbSelection.TabIndex = 1;
            this.rbSelection.Text = "Selection";
            // 
            // rbInsert
            // 
            this.rbInsert.Location = new System.Drawing.Point(112, 16);
            this.rbInsert.Name = "rbInsert";
            this.rbInsert.Size = new System.Drawing.Size(88, 24);
            this.rbInsert.TabIndex = 4;
            this.rbInsert.Text = "Insertion";
            // 
            // btnClear
            // 
            this.btnClear.Location = new System.Drawing.Point(136, 112);
            this.btnClear.Name = "btnClear";
            this.btnClear.Size = new System.Drawing.Size(88, 23);
            this.btnClear.TabIndex = 4;
            this.btnClear.Text = "Clear Result";
            this.btnClear.Click += new System.EventHandler(this.btnClear_Click);
            // 
            // rbShell
            // 
            this.rbShell.Location = new System.Drawing.Point(112, 40);
            this.rbShell.Name = "rbShell";
            this.rbShell.Size = new System.Drawing.Size(64, 24);
            this.rbShell.TabIndex = 5;
            this.rbShell.Text = "Shell";
            // 
            // Algorithms
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
            this.ClientSize = new System.Drawing.Size(248, 173);
            this.Controls.Add(this.btnClear);
            this.Controls.Add(this.groupBox1);
            this.Controls.Add(this.lblOutput);
            this.Controls.Add(this.btnSort);
            this.Controls.Add(this.tbxInput);
            this.Name = "Algorithms";
            this.Text = "Algorithms";
            this.groupBox1.ResumeLayout(false);
            this.ResumeLayout(false);

        }
        #endregion

        private void btnSort_Click(object sender, System.EventArgs e)
        {
            char[] tmp = tbxInput.Text.ToCharArray ();
            int startIndex = 0;

            if ((null != tmp) && (0 != tmp.Length))
            {
                if (true == rbBubble.Checked)
                {
                    lblOutput.Text = BubbleSort (tmp, ref startIndex);
                }
                else if (true == rbInsert.Checked)
                {
                    lblOutput.Text = InsertSort (tmp, ref startIndex);
                }
                else if (true == rbSelection.Checked)
                {
                    lblOutput.Text = SelectionSort (tmp, ref startIndex);
                }
                else if (true == rbShell.Checked)
                {
                    lblOutput.Text = ShellSort (tmp, ref startIndex);
                }
            }
        }

        int Key (char c)
        {
            //
            // Sort rule. The default is using ASCII.
            //
            return c;
        }

        bool Less (char a, char b)
        {
            return Key(a) < Key(b);
        }

        void ExchangePlace (ref char a, ref char b)
        {
            char c = a;
            a = b;
            b = c;
        }

        void CompExch (ref char a, ref char b)
        {
            if (Less (b, a))
                ExchangePlace (ref a, ref b);
        }

        string BubbleSort (char[] tmp, ref int startIndex)
        {
            for (int i=startIndex; i<tmp.Length; i++)
            {
                for (int j=tmp.Length - 1; j>i; j--)
                {
                    CompExch (ref tmp[j - 1], ref tmp[j]);
                }
            }

            return new string (tmp);
        }

        string SelectionSort (char[] tmp, ref int startIndex)
        {
            for (int i=startIndex; i<tmp.Length; i++)
            {
                int min = i;

                for (int j=i+1; j<tmp.Length; j++)
                    if (Less (tmp[j], tmp[min]))
                        min = j;

                ExchangePlace (ref tmp[i], ref tmp[min]);
            }

            return new string (tmp);
        }

        string InsertSort (char[] tmp, ref int startIndex)
        {
            for (int i=startIndex + 1; i<tmp.Length; i++)
                CompExch (ref tmp[startIndex], ref tmp[i]);

            for (int i=startIndex + 2; i<tmp.Length; i++)
            {
                int j=i;
                char c = tmp[i];

                while (Less (c, tmp[j-1]))
                {
                    tmp[j] = tmp[j - 1];
                    j--;
                }

                tmp[j] = c;
            }

            return new string (tmp);
        }

        string ShellSort (char[] tmp, ref int startIndex)
        {
            int i, h;
            for (h=startIndex; h<=(tmp.Length -startIndex)/9; h = 3*h +1);

            for ( ; h>0; h /= 3)
            {
                for (i=startIndex + h; i<tmp.Length; i++)
                {
                    int j = i;
                    char c = tmp[i];

                    while (j >= startIndex+h && Less (c, tmp[j-h]))
                    {
                        tmp[j] = tmp[j-h];
                        j-=h;
                    }

                    tmp[j] = c;
                }
            }

            return new string (tmp);
        }

        private void btnClear_Click(object sender, System.EventArgs e)
        {
            lblOutput.Text = "Result";
        }
    }
}