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itabatakafumi/Enumerable

Created May 18, 2010 09:53
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Enumerable
---repeat_joinメソッド
def repeat_join(array)
array.inject{ |a,b| a << "," << b }
end
---odd_sumメソッド
def odd_sum(array)
array.select{ |i| i % 2 == 1}.inject{ |a,b| a + b }
end
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