首先，您需要保存每个字母的计数。***的方法是使用Dictionary对象

1st you need to save the count for each alphabet. The best way is to make use of Dictionary object

Dictionary< char，int> countOfLetters = new Dictionary< char，int>（）;

Dictionary<char, int> countOfLetters = new Dictionary<char, int>();

现在你可以使用foreach循环扫描字符串

Now you can scan the string using a foreach loop

foreach（string coScan中的char c） ）

foreach(char c in stringToScan)

在循环内你可以检查字符（字母）是否已经添加

Inside the loop you can check if the character(letter) is already added or not

if（countOfLetters.ContainsKey（c））然后你应该增加点数

if(countOfLetters.ContainsKey(c)) then you should increment the count

countOfLetters [c] ++;

countOfLetters[c]++;

否则你需要将它添加到字数为1的

else you need to add it to the dictionary with count 1

countOfLetters.Add（c，1）;

countOfLetters.Add(c, 1);

现在你可以使用另一个foreach循环打印结果

Now you can print the result using another foreach loop

foreach（ charc in countOfLetters.Keys）

foreach(char c in countOfLetters.Keys)

Console.WriterLine（" Letter" + c +"出现" + countOfLetter [c] .ToString（）+" times。" ;）;

Console.WriterLine("Letter " + c + " appeared " + countOfLetter[c].ToString() + " times.");

 

希望这会有所帮助!!!

Hope this helps!!!