C#：統計字串中每個字元的個數

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具體代碼如下：

 1 namespace demo 2 { 3     public class Program 4     { 5         static void Main(string[] args) 6         { 7             string str = "hi,good morning."; 8             Console.WriteLine($"字串：{str}"); 9             Dictionary<char, int> dic = Count(str);10             foreach(var c in dic)            11                 Console.WriteLine($" ‘{c.Key}‘：{c.Value}");            12             Console.ReadKey();13         }14         static Dictionary<char,int> Count(string str)15         {16             Dictionary<char, int> dic = new Dictionary<char, int>();17             char[] chars = str.ToArray();18             foreach(char c in chars)19             {20                 if (dic.ContainsKey(c))21                     dic[c]++;22                 else23                     dic.Add(c, 1);24             }25             return dic;26         }27     }28 }

執行結果：

C#：統計字串中每個字元的個數