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Given an input matrix, return a matrix with all elements above and to the right of the main diagonal set to zero. Example:

input = [ 1 1 1 1; 1 1 1 1; 1 1 1 1; 1 1 1 1] output = [1 0 0 0; 1 1 0 0; 1 1 1 0; 1 1 1 1]

225 correct solutions
70 incorrect solutions

Last solution submitted on Dec 13, 2014

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