计算某个字符在字符串中出现多少次，然后再出现在其他字符中 [英] Counting how many times a certain char appears in a string before any other char appears

问题描述

我有很多琴弦.每个字符串前面至少应包含1个 $ .遍历每个字符串的字符以计​​算每个字符串有多少 $ 个字符的最佳方法是什么.

I have many strings. Each string is prepended with at least 1 $. What is the best way to loop through the chars of each string to count how many $'s there are per string.

例如:

"$hello" - 1
"$$hello" - 2
"$$h$ello" - 2

推荐答案

您可以使用Count方法

You could use the Count method

var count = mystring.Count(x => x == '$')

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