消除单词中的多余字符

Question

我正在做一个需要删除多余字母的项目。

如果出现一个字母三次或三次以上连续，我们把它浓缩到一个字母

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

我使用Ruby 1.8.7做到这一点。我如何去做这件事？

Answer 1

这里是你如何做到这一点：

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!"