puts ['ボ', 'ジョ', 'レ', 'ヌ', 'ボ'].shuffle.map.with_index {|x, i| i > 1 ? x+'ー' : x}.join
Ruby はこういうの書くのが簡単でいいですね。
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Why do not you register as a user and use Qiita more conveniently?
- We will deliver articles that match youBy following users and tags, you can catch up information on technical fields that you are interested in as a whole
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