回答編集履歴
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answer
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@@ -1,16 +1,15 @@
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```Ruby
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table = <<-EOS
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C_name C_code 2000 2001 2002
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A.
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A. A. 30. 23. 67.
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B.
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B. B. 29. 50. 66.
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C.
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C. C. 11. 55. 77.
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EOS
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tmp = table.split("\n").map(&:split).transpose
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tmp1 = tmp.take(2)
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tmp2 = tmp.
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tmp1, tmp2 = tmp.shift(2), tmp.transpose
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tmp2.map!.with_index { |e, i| e.unshift(i.zero? ? 'year' : 'povertycap') }
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new_table = (tmp1 + tmp2).transpose.map { |l| l.join(
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new_table = (tmp1 + tmp2).transpose.map { |l| l.join("\t") }.join("\n")
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puts new_table
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