C# Implementation Method of Combination and Permutation

　　　　　C# Implementation Method of Combination and Permutation

　　　　　 最近在做数据分析系统，里面涉及到组合排列的问题，查找了很多的资料，但是感觉很多资料都是比较零散的，达不到项目需求。

后来经过一段的时间的探索，终于实现了组合排列的功能。下面我就来简单说说吧。

　　　　 需求描述:　　

　　 要实现的功能就是字符或数字的组合排列。例如：ab 的所有组合为：ab,ba ；　 ab的所有不重复排列为：ab。

其实这也是彩票中常说的直选和组选。效果图如下：

　　　　　　　　　

　　　　功能实现

　　这里就不多说了，直接贴上实现代码吧。

　　　　　 1.窗体界面

　　　　　　　　 窗体界面设计入上面的截图。

　　　　　 2.添加引用 在项目中，添加引用——>AoTu.ZhuHe.dll　　

　　　　　　3.窗体类代码　

 public partial class FrmDemo : Form 
 {   
 public FrmDemo()    
 {       InitializeComponent();
 } 
 private void FrmDemo_Load(sender, EventArgs e)   
 {    
 string svn = "0b1de737-cea695ab-fc505423-bdd5f3db ";  
 bool ret = ZhuHeNum.Initia(svn);   
 if (!ret)       
 MessageBox.Show("Registration failed!"); 
 } 
 private void btnNot2_Click(sender, EventArgs e)  
 {       string str = txtnot.Text;      
 List<string> list = ZhuHeNum.NumNoRepeAssembly(str, 2); 
 if (list == null)    
 {       
 MessageBox.Show("Registration failed!");     
 return;    
 }     
 list.Sort();     
 StringBuilder sbBuilder = new StringBuilder();   
 foreach (string s in list) 
 {    
 sbBuilder.Append(s);     
 sbBuilder.Append("\r\n");       }  
 txtShow.Clear();      
 txtShow.Text = sbBuilder.ToString(); 
 lbCount.Text = list.Count.ToString();  
 }  
 private void btnNot3_Click(sender, EventArgs e)  
 {      
 string str = txtnot.Text;     
 List<string> list = ZhuHeNum.NumNoRepeAssembly(str, 3);  
 if (list == null)    
 {         MessageBox.Show("Registration failed!");    
 return;     
 }     
 list.Sort();    
 StringBuilder sbBuilder = new StringBuilder();  
 foreach (string s in list)   
 {       
 sbBuilder.Append(s);  
 sbBuilder.Append("\r\n"); 
 }  
 txtShow.Clear();     
 txtShow.Text = sbBuilder.ToString();  
 lbCount.Text = list.Count.ToString();  
 }    
 private void btnAll2_Click(sender, EventArgs e)  
 {       string str = txtAll.Text;     
 List<string> list = ZhuHeNum.NumGroupAssembly(str, 2);  
 if (list == null)   
 {         MessageBox.Show("Registration failed!"); 
 return;     
 }    
 list.Sort();     
 StringBuilder sbBuilder = new StringBuilder(); 
 foreach (string s in list)   
 {        
 sbBuilder.Append(s); 
 sbBuilder.Append("\r\n");       } 
 txtShow.Clear();     
 txtShow.Text = sbBuilder.ToString();  
 lbCount.Text = list.Count.ToString();
 }   
 private void btnAll3_Click(sender, EventArgs e) 
 {      
  
 List<string> list = ZhuHeNum.NumGroupAssembly(str, 3);  
 if (list == null)    
 {        
 MessageBox.Show("Registration failed!");  
 return;     
 }  
 list.Sort();      
 StringBuilder sbBuilder = new StringBuilder();   
 foreach (string s in list)  
 {        
 sbBuilder.Append(s); 
 sbBuilder.Append("\r\n");  
 } 
 txtShow.Clear();      
 txtShow.Text = sbBuilder.ToString(); 
 lbCount.Text = list.Count.ToString(); 
 }  
 }

　　　　 4.Running effect

Closing Remarks

　　　　　　　　　　　 Up to this point, the direct selection and group selection functions have been implemented. AttacheddemoSource code for reference.

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