我如何排序按长度的字符串数组的Ruby？ [英] How do I sort a Ruby array of strings by length?

问题描述

我怎么排序的：

  ARR = [AAA，AA，AAAA，A，AAAAA];
 

进入这个？

  ARR = [A，AA，AAA，AAAA，AAAAA];
 

解决方案

 改编= {arr.sort_by | X | x.length}
 

或在1.8.7 +：

  ARR = arr.sort_by（安培;：长）
 

How do I sort this:

arr = ["aaa","aa","aaaa","a","aaaaa"];

Into this?

arr = ["a","aa","aaa","aaaa","aaaaa"];

解决方案

arr = arr.sort_by {|x| x.length}

Or in 1.8.7+:

arr = arr.sort_by(&:length)

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