Back to basics 23 - Triangular matrix - MATLAB Cody - MATLAB Central

Problem 413. Back to basics 23 - Triangular matrix

Difficulty:Rate

Covering some basic topics I haven't seen elsewhere on Cody.

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]

Solution Stats

58.98% Correct | 41.02% Incorrect
Last Solution submitted on Jun 15, 2025

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