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 Solvers974
Suggested Problems
-
How to find the position of an element in a vector without using the find function
2704 Solvers
-
1232 Solvers
-
Omit columns averages from a matrix
580 Solvers
-
convert matrix to single column
399 Solvers
-
String Array Basics, Part 1: Convert Cell Array to String Array; No Missing Values
1453 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!