如何对其进行排序:
arr = ["aaa","aa","aaaa","a","aaaaa"];
这件事?
arr = ["a","aa","aaa","aaaa","aaaaa"];
如何对其进行排序:
arr = ["aaa","aa","aaaa","a","aaaaa"];
这件事?
arr = ["a","aa","aaa","aaaa","aaaaa"];
arr = arr.sort_by {|x| x.length}
或者在1.8.7+中:
arr = arr.sort_by(&:length)