I'd suggest adding test cases in which n (or abs(n)) is larger than the dimension of x; for example, x is a 4-by-4 matrix and n = 6.
smooth~ basically same idea, my solution however is bit of inflexible.
Will work also for non-square input matrix x.
Remove the small words from a list of words.
Eight Queens Solution Checker
Find best placement for ordered dominoes (harder)
Find the largest value in the 3D matrix
Create a random logical vector of N elements of which M are true.
Who have the chance?
Find my secret function II
Find my secret function I
Find the maxmum value of N*N Matrix
Is it a mail?
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