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Create a "rainbow matrix" as described in the following examples

Input = 3 Output = [ 1 2 3 2 3 2 3 2 1 ]

Input = 5 Output = [ 1 2 3 4 5 2 3 4 5 4 3 4 5 4 3 4 5 4 3 2 5 4 3 2 1 ]

30 correct solutions
9 incorrect solutions

Last solution submitted on Jan 29, 2015

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