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def identity(size)
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Array.new(size){|i| Array.new(size){|j| i==j ? 1 : 0}}
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2013-04-10 21:29:02 -07:00
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end
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[4,5,6].each do |size|
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2013-06-05 21:47:54 +00:00
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puts size, identity(size).map {|r| r.to_s}, ""
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2013-04-10 21:29:02 -07:00
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end
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