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.
Knight's Tour Checker
Find the sum of the elements in the "second" diagonal
Switch matrix to a column vector
2 b | ~ 2 b
Back to basics 1 - Saving
Convert Hard Drive marketing sizes to actual data sizes
Back to basics 26 - Keywords
7 segment LED display
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