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 ]
Solve

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Last Solution submitted on Jun 12, 2026

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Aaron Coville shinya matsumoto Casey Stein 文浩

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