消除单词中的额外字符

Question

我正在做一个需要删除单词中额外字母的项目。

如果一封信连续发生三次或更多次，我们将其压缩为一个字母

-Happyyyyyy -> Happy
-awwwsum -> awsum
-cooool -> col

我正在使用Ruby 1.8.7来做到这一点。我该怎么做？

Answer 1

以下是您的工作方式：

result = subject.gsub(
    /(.)   # Match a single character, capture it in group 1
    \1{2,} # Match the same character 2 or more times, as many as possible/x, 
   '\1')   # Replace with the one captured character

结果：

> subject = "happyyyy daaaaays!!!"
=> "happyyyy daaaaays!!!"
> result = subject.gsub(/(.)\1{2,}/, '\1')
=> "happy days!"