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fizzbuzzプログラムを作成 #1

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7 changes: 7 additions & 0 deletions 01.fizzbuzz/fizzbuzz.rb
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Original file line number Diff line number Diff line change
@@ -0,0 +1,7 @@
(1..20).each { |n|

@pjord2026 pjord2026 Jul 7, 2026

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Rubyのeachにブロックを渡すとき、複数行の場合は{}ではなくdo...endを使うのが慣例です。

(1..20).each do |n|
  # ...
end

1行で書く場合は{}、複数行の場合はdo...endという使い分けを覚えておくと良いです。

(puts "FizzBuzz"; next) if n.modulo(3 * 5) == 0

@pjord2026 pjord2026 Jul 7, 2026

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行末に余分なスペースが入っています。エディタの設定で「保存時に行末スペースを削除する」をオンにしておくと、こういったものを自動で防げます。

また、n.modulo(3 * 5) は n.modulo(15) と書けますし、% 演算子を使って n % 15 == 0 と書くこともできます。どちらがより読みやすいか意識してみてください。

(puts "Buzz"; next) if n.modulo(5) == 0

@pjord2026 pjord2026 Jul 7, 2026

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2行目と同様、行末に余分なスペースが入っています。

(puts "Fizz"; next) if n.modulo(3) == 0
puts n

@pjord2026 pjord2026 Jul 7, 2026

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行末に余分なスペースが入っています。こちらも合わせて取り除いてください。

}