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【保存版】Rubyの繰り返し処理まとめ

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Rubyには繰り返し処理というものがあります。

同じ処理を何度も自動で繰り返すことができる処理ですね。なんか「プログラミング」っぽくなってきましたね。

今回紹介するのは以下です。

Rubyの繰り返し処理

  • timesメソッド
  • eachメソッド
  • for文
  • while文
  • until文
  • loopメソッド

上記の通りです。
それでは順に解説していきます。

timesメソッド

一定の数値を繰り返す処理が実行できる

5.times do |i|
  puts "こんにちは"
end

実行結果

こんにちは
こんにちは
こんにちは
こんにちは
こんにちは

do〜endの中の定義を繰り返します。

eachメソッド

fruits = ["りんご","みかん","ぶどう"]
fruits.each do |fruit|
  puts fruit
end

実行結果

りんご
みかん
ぶどう

このように値を順番に取り出してくれます。

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