C # Classic Pen question-get the same word utilises and its number in a string

This article from: http://www.cnblogs.com/kejie/p/5971773.html

Public  dictionary<char,int> Getstrsameas (String str)
{  
   Converts a string into an array of characters.   Char[] Chararray=str. ToCharArray ();
   Defines a dictionary with key keys as the number of characters to be taken out, and value as the corresponding character.   Dictionary<char,int> dic=new dictionary<char,int> ();
for (int i=0;i<chararray.length;i++)   {
    If the current dictionary does not have this character, add a new one, or increment the corresponding value of the current character by one.    if (!dic. ContainsKey (Chararray[i]))    {      dic. ADD (chararray[i],1);    }   else   {     dic[chararray[i]]=dic[chararray[i]]++;   }  ｝
return DIC;}

C # Classic Pen question-get the same word utilises and its number in a string