ruby 2.7.0についての記事です
- reverse 文字列を文字単位で左右逆転した文字列を返す
公式ドキュメントStringクラスreverse - revers 配列でも使える
公式ドキュメントArryクラスreverse
s = "string".reverse # stringクラスで使う場合
puts s # => gnirts
arry = ["a","b","c"] # arryクラスで使う場合
print arry.reverse # => ["c","b","a"]
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