Your test suite doesn't really match the problem statement. The tests require matrices with *exactly* all elements abot the main diagonal to be 0 *and* all elements on or below the main diagonal to be 1.
Additional test cases have been added.
Running this on octave returns the correct results yet the page still says I'm wrong.
function y = triangMatrix(x)
I copied this code from somewhere.
Find a subset that divides the vector into equal halves
Find nearest prime number less than input number
Flip the vector from right to left
Convert radians to degrees
Back to basics 26 - Keywords
Back to basics 7 - Equal NaNs
Back to basics 25 - Valid variable names
Back to basics 2 - Function Path
Back to basics 13 - Input variables
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