Rubyでreverse
Rubyでもreverseを書いてみました.
class Array def myreverse s = self.dup rev = [] while t = s.shift rev.unshift t end rev end end class String def myreverse self.split(//).myreverse.to_s # 無理矢理感が漂う end end
ごくごく簡単ですけど.
irbで試してみます.
irb(main):001:0> require 'myreverse.rb' => true irb(main):002:0> arr = [1,2,3] => [1, 2, 3] irb(main):003:0> arr.myreverse => [3, 2, 1] irb(main):004:0> str = "Ruby" => "Ruby" irb(main):005:0> str.myreverse => "ybuR"