计算字符串C＃中所有字符的出现次数 [英] Count All Character Occurrences in a String C#

问题描述

动态计数C＃中每个字符出现的最佳方法是什么？

What is the best way to dynamically count each character occurrence in C#?

给定

string sample = "Foe Doe";

它应该输出类似

f = 1
o = 2
e = 2
d = 1

对单个字符计数很容易，但是在我的考试中这有点棘手，我只能想象得到所有唯一字符的解决方案->然后将其存储在一个集合中（最好是一个数组），然后

counting a single character would be easy but in my exam this was a bit tricky, I could only imagine a solution to get all unique characters -> then store it in a collection(preferably an array) then a nested for loop for the array and the string.

有没有比这更好的解决方案了？

Is there a better solution than this?

推荐答案

使用LINQ

sample.GroupBy(c => c).Select(c => new { Char = c.Key, Count = c.Count()});

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