Problem 413. Back to basics 23 - Triangular matrix
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
Problem Comments
-
3 Comments
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)
for i=1:rows(x);
for j=1:columns(x);
if j>i;
x(i,j)=0;
else
endif
endfor
endfor
disp(x)
endfunction
Solution Comments
Show commentsProblem Recent Solvers963
Suggested Problems
-
1519 Solvers
-
middleAsColumn: Return all but first and last element as a column vector
594 Solvers
-
Remove the two elements next to NaN value
641 Solvers
-
Getting the indices from a matrix
618 Solvers
-
626 Solvers
More from this Author39
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!