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Apply TodayGiven n and m, construct an n-by-n matrix a such that a, when rotated 90 degrees and compared with itself, matches itself in exactly m places.

The number of matches m is calculated as follows:

m = nnz(rot90(a)==a)

Your answer a is clearly not unique. It must only meet the criteria stated above.

Examples:

Input n = 2, m = 1 One possible output: a = [ 1 2 1 3 ]

Input n = 3, m = 7 One possible output: a = [ 0 1 1 1 1 1 1 1 1 ]

16 correct solutions
7 incorrect solutions

Last solution submitted on Jul 12, 2014

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