消除單詞中的多餘字符

Question

我正在做一個需要刪除多餘字母的項目。

如果出現一個字母三次或三次以上連續，我們把它濃縮到一個字母

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

我使用Ruby 1.8.7做到這一點。我如何去做這件事？

Answer 1

這裏是你如何做到這一點：

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 

結果：

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