Check whether the input matrix is a figurate number triangle: http://mathworld.wolfram.com/FigurateNumberTriangle.html
you should probably add a test case where the correct answer is false.
I added a few more tests as suggested.
Find the longest sequence of 1's in a binary sequence.
Distance walked 1D
How many monitors are connected ?
Find the index of the largest value in any vector X=[4,3,4,5,9,12,0,4.....5]
Is my wife right?
All your base are belong to us
Cull vector elements that contain a specified digit
So many choices
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