c# - 计算字符串变量中的字母数

Question

我正在尝试计算字符串变量中的字母数。我想做一个刽子手游戏，我需要知道需要多少个字母才能匹配单词中的数量。

Answer 1

myString.Length; //will get you your result
//alternatively, if you only want the count of letters:
myString.Count(char.IsLetter);
//however, if you want to display the words as ***_***** (where _ is a space)
//you can also use this:
//small note: that will fail with a repeated word, so check your repeats!
myString.Split(' ').ToDictionary(n => n, n => n.Length);
//or if you just want the strings and get the counts later:
myString.Split(' ');
//will not fail with repeats
//and neither will this, which will also get you the counts:
myString.Split(' ').Select(n => new KeyValuePair<string, int>(n, n.Length));

Answer 2

你可以简单地使用

int numberOfLetters = yourWord.Length;

或者要酷炫时尚，请像这样使用 LINQ：

int numberOfLetters = yourWord.ToCharArray().Count();

如果你同时讨厌 Properties 和 LINQ，你可以用循环去老学校：

int numberOfLetters = 0;
foreach (char letter in yourWord)
{
    numberOfLetters++;
}

Answer 3

使用有什么问题string.Length?

// len will be 5
int len = "Hello".Length;

Answer 4

如果您不需要前导和尾随空格：

str.Trim().Length

Answer 5

string yourWord = "Derp derp";

Console.WriteLine(new string(yourWord.Select(c => char.IsLetter(c) ? '_' : c).ToArray()));

产量：

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