refactoring by t-kojima #6
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ファイル・メソッド名の変更
transport(輸送)より**transpose(転置)**が適切かと思います。
Array#transposeの利用
メインのロジックはArray#transposeで同じ動作ができます。
transported_array = array.transposeString#each_line,&:methodの利用
一行目は以下のように置き換えられます。
前
array = source.split("\n").map {|s| s.split(' ')}後
array = source.each_line.map(&:split)しかし、そのままのほうが一行目と三行目が全く逆の処理をしていることが分かりやすいので修正していません。
一行目
array = source.split("\n").map {|s| s.split(' ')}三行目
transposed_array.map {|s| s.join(' ')}.join("\n")