Cody

# Problem 1704. Triangular matrices in 3D array

Solution 3160341

Submitted on 11 Oct 2020 by Marco Tullio
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### Test Suite

Test Status Code Input and Output
1   Pass
x(:,:,1) = [1 2 3;4 5 6;7 8 9]; x(:,:,2) = [1 4 7;2 5 8;3 6 9]; x(:,:,3) = [1 2 3;1 2 3;1 2 3]; y_correct(:,:,1) = [1 0 0;4 5 0;7 8 9]; y_correct(:,:,2) = [1 0 0;2 5 0;3 6 9]; y_correct(:,:,3) = [1 0 0;1 2 0;1 2 3]; assert(isequal(tril3(x),y_correct))

y = 1 0 0 4 5 0 7 8 9 y(:,:,1) = 1 0 0 4 5 0 7 8 9 y(:,:,2) = 1 0 0 2 5 0 3 6 9 y(:,:,1) = 1 0 0 4 5 0 7 8 9 y(:,:,2) = 1 0 0 2 5 0 3 6 9 y(:,:,3) = 1 0 0 1 2 0 1 2 3

2   Pass
x = cumsum(ones(3,3,50)); y_correct = repmat([1 0 0;2 2 0; 3 3 3],[1,1,50]); assert(isequal(tril3(x),y_correct))

y = 1 0 0 2 2 0 3 3 3 y(:,:,1) = 1 0 0 2 2 0 3 3 3 y(:,:,2) = 1 0 0 2 2 0 3 3 3 y(:,:,1) = 1 0 0 2 2 0 3 3 3 y(:,:,2) = 1 0 0 2 2 0 3 3 3 y(:,:,3) = 1 0 0 2 2 0 3 3 3 y(:,:,1) = 1 0 0 2 2 0 3 3 3 y(:,:,2) = 1 0 0 2 2 0 3 3 3 y(:,:,3) = 1 0 0 2 2 0 3 3 3 y(:,:,4) = 1 0 0 2 2 0 3 3 3 y(:,:,1) = 1 0 0 2 2 0 3 3 3 y(:,:,2) = 1 0 0 2 2 0 3 3 3 y(:,:,3) = 1 0 0 2 2 0 3 3 3 y(:,:,4) = 1 0 0 2 2 0 3 3 3 y(:,:,5) = 1 0 0 2 2 0 3 3 3 y(:,:,1) = 1 0 0 2 2 0 3 3 3 y(:,:,2) = 1 0 0 2 2 0 3 3 3 y(:,:,3) = 1 0 0 2 2 0 3 3 3 y(:,:,4) = 1 0 0 2 2 0 3 3 3 y(:,:,5) = 1 0 0 2 2 0 3 3 3 y(:,:,6) = 1 0 0 2 2 0 3 3 3 y(:,:,1) = 1 0 0 2 2 0 3 3 3 y(:,:,2) = 1 0 0 2 2 0 3 3 3 y(:,:,3) = 1 0 0 2 2 0 3 3 3 y(:,:,4) = 1 0 0 2 2 0 3 3 3 y(:,:,5) = 1 0 0 2 2 0 3 3 3 y(:,:,6) = 1 0 0 2 2 0 3 3 3 y(:,:,7) = 1 0 0 2 2 0 3 3 3 y(:,:,1) = 1 0 0 2 2 0 3 3 3 y(:,:,2) = 1 0 0 2 2 0 3 3 3 y(:,:,3) = 1 0 0 2 2 0 3 3 3 y(:,:,4) = 1 0 0 2 2 0 3 3 3 y(:,:,5) = 1 0 0 2 2 0 3 3 3 y(:,:,6) = 1 0 0 2 2 0 3 3 3 y(:,:,7) = 1 0 0 2 2 0 3 3 3 y(:,:,8) = 1 0 0 2 2 0 3 3 3 y(:,:,1) = 1 0 0 2 2 0 3 3 3 y(:,:,2) = 1 0 0 2 2 0 3 3 3 y(:,:,3) = 1 0 0 2 2 0 3 3 3 y(:,:,4) = 1 0 0 2 2 0 3 3 3 y(:,:,5) = 1 0 0 2 2 0 3 3 3 y(:,:,6) = 1 0 0 2 2 0 3 3 3 y(:,:,7) = 1 0 0 2 2 0 3 3 3 y(:,:,8) = 1 0 0 2 2 0 3 3 3 y(:,:,9) = 1 0 0 2 2 0 3 3 3 y(:,:,1) = 1 0 0 2 2 0 3 3 3 y(:,:,2) = 1 0 0 2 2 0 3 3 3 y(:,:,3) = 1 0 0 2 2 0 3 3 3 y(:,:,4) = 1 0 0 2 2 0 3 3 3 y(:,:,5) = 1 0 0 2 2 0 3 3 3 y(:,:,6) = 1 0 0 2 2 0 3 3 3 y(:,:,7) = 1 0 0 2 2 0 3 3 3 y(:,:,8) = 1 0 0 2 2 0 3 3 3 y(:,:,9) = 1 0 0 2 2 0 3 3 3 y(:,:,10) = 1 0 0 2 2 0 3 3 3 y(:,:,1) = 1 0 0 2 2 0 3 3 3 y(:,:,2) = 1 0 0 2 2 0 3 3 3 y(:,:,3) = 1 0 0 2 2 0 3 3 3 y(:,:,4) = 1 0 0 2 2 0 3 3 3 y(:,:,5) = 1 0 0 2 2 0 3 3 3 y(:,:,6) = 1 0 0 2 2 0 3 3 3 y(:,:,7) = 1 0 0 2 2 0 3 3 3 y(:,:,8) = 1 0 0 2 2 0 3 3 3 y(:,:,9) = 1 0 0 2 2 0 3 3 3 y(:,:,10) = 1 0 0 2 2 0 3 3 3 y(:,:,11) = 1 0 0 2 2 0 3 3 3 y(:,:,1) = 1 0 0 2 2 0 3 3 3 y(:,:,2) = 1 0 0 2 2 0 3 3 3 y(:,:,3) = 1 0 0 2 2 0 3 3 3 y(:,:,4) = 1 0 0 2 2 0 3 3 3 y(:,:,5) = 1 0 0 2 2 0 3 3 3 y(:,:,6) = 1 0 0 2 2 0 3 3 3 y(:,:,7) = 1 0 0 2 2 0 3 3 3 y(:,:,8) = 1 0 0 2 2 0 3 3 3 y(:,:,9) = 1 0 0 2 2 0 3 3 3 y(:,:,10) = 1 0 0 2 2 0 3 3 3 y(:,:,11) = 1 0 0 2 2 0 3 3 3 y(:,:,12) = 1 0 0 2 2 0 3 3 3 y(:,:,1) = 1 0 0 2 2 0 3 3 3 y(:,:,2) = 1 0 0 2 2 0 3 3 3 y(:,:,3) = 1 0 0 2 2 0 3 3 3 y(:,:,4) = 1 0 0 2 2 0 3 3 3 y(:,:,5) = 1 0 0 2 2 0 3 3 3 y(:,:,6) = 1 0 0 2 2 0 3 3 3 y(:,:,7) = 1 0 0 2 2 0 3 3 3 y(:,:,8) = 1 0 0 2 2 0 3 3 3 y(:,:,9) = 1 0 0 2 2 0 3 3 3 y(:,:,10) = 1 0 0 2 2 0 3 3 3 y(:,:,11) = 1 0 0 2 2 0 3 3 3 y(:,:,12) = 1 0 0 2 2 0 3 3 3 y(:,:,13) = 1 0 0 2 2 0 3 3 3 y(:,:,1) = 1 0 0 2 2 0 3 3 3 y(:,:,2) = 1 0 0 2 2 0 3 3 3 y(:,:,3) = 1 0 0 2 2 0 3 3 3 y(:,:,4) = 1 0 0 2 2 0 3 3 3 y(:,:,5) = 1 0 0 2 2 0 3 3 3 y(:,:,6) = 1 0 0 2 2 0 3 3 3 y(:,:,7) = 1 0 0 2 2 0 3 3 3 y(:,:,8) = 1 0 0 2 2 0 3 3 3 y(:,:,9) = 1 0 0 2 2 0 3 3 3 y(:,:,10) = 1 0 0 2 2 0 3 3 3 y(:,:,11) = 1 0 0 2 2 0 3 3 3 y(:,:,12) = 1 0 0 2 2 0 3 3 3 y(:,:,13) = 1 0 0 2 2 0 3 3 3 y(:,:,14) = 1 0 0 2 2 0 3 3 3 y(:,:,1) = 1 0 0 2 2 0 3 3 3 y(:,:,2) = 1 0 0 2 2 0 3 3 3 y(:,:,3) = 1 0 0 2 2 0 3 3 3 y(:,:,4) = 1 0 0 2 2 0 3 3 3 y(:,:,5) = 1 0 0 2 2 0 3 3 3 y(:,:,6) = 1 0 0 2 2 0 3 3 3 y(:,:,7) = 1 0 0 2 2 0 3 3 3 y(:,:,8) = 1 0 0 2 2 0 3 3 3 y(:,:,9) = 1 0 0 2 2 0 3 3 3 y(:,:,10) = 1 0 0 2 2 0 3 3 3 y(:,:,11) = 1 0 0 2 2 0 3 3 3 y(:,:,12) = 1 0 0 2 2 0 3 3 3 y(:,:,13) = 1 0 0 2 2 0 3 3 3 y(:,:,14) = 1 0 0 2 2 0 3 3 3 y(:,:,15) = 1 0 0 2 2 0 3 3 3 y(:,:,1) = 1 0 0 2 2 0 3 3 3 y(:,:,2) = 1 0 0 2 2 0 3 3 3 y(:,:,3) = 1 0 0 2 2 0 3 3 3 y(:,:,4) = 1 0 0 2 2 0 3 3 3 y(:,:,5) = 1 0 0 2 2 0 3 3 3 y(:,:,6) = 1 0 0 2 2 0 3 3 3 y(:,:,7) = 1 0 0 2 2 0 3 3 3 y(:,:,8) = 1 0 0 2 2 0 3 3 3 y(:,:,9) = 1 0 0 2 2 0 3 3 3 y(:,:,10) = 1 0 0 2 2 0 3 3 3 y(:,:,11) = 1 0 0 2 2 0 3 3 3 y(:,:,12) = 1 0 0 2 2 0 3 3 3 y(:,:,13) = 1 0 0 2 2 0 3 3 3 y(:,:,14) = 1 0 0 2 2 0 3 3 3 y(:,:,15) = 1 0 0 2 2 0 3 3 3 y(:,:,16) = 1 0 0 2 2 0 3 3 3 y(:,:,1) = 1 0 0 2 2 0 3 3 3 y(:,:,2) = 1 0 0 2 2 0 3 3 3 y(:,:,3) = 1 0 0 2 2 0 3 3 3 y(:,:,4) = 1 0 0 2 2 0 3 3 3 y(:,:,5) = 1 0 0 2 ...

3   Pass
x = cumsum(ones(5,5,100),2); y_correct = repmat(tril(cumsum(ones(5,5),2)),[1,1,100]); assert(isequal(tril3(x),y_correct))

y = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,1) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,2) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,1) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,2) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,3) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,1) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,2) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,3) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,4) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,1) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,2) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,3) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,4) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,5) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,1) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,2) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,3) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,4) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,5) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,6) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,1) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,2) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,3) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,4) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,5) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,6) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,7) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,1) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,2) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,3) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,4) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,5) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,6) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,7) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,8) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,1) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,2) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,3) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,4) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,5) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,6) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,7) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,8) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,9) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,1) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,2) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,3) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,4) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,5) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,6) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,7) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,8) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,9) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,10) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,1) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,2) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,3) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,4) = 1 0 0 0 0 1 2 0 0 0 1 2 3 0 0 1 2 3 4 0 1 2 3 4 5 y(:,:,5) = 1 0 0 ...

4   Pass
x = rand([1 1 400]); y_correct = x; assert(isequal(tril3(x),y_correct))

y = 0.9232 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,5) = 0.8091 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,5) = 0.8091 y(:,:,6) = 0.0631 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,5) = 0.8091 y(:,:,6) = 0.0631 y(:,:,7) = 0.6271 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,5) = 0.8091 y(:,:,6) = 0.0631 y(:,:,7) = 0.6271 y(:,:,8) = 0.7828 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,5) = 0.8091 y(:,:,6) = 0.0631 y(:,:,7) = 0.6271 y(:,:,8) = 0.7828 y(:,:,9) = 0.3991 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,5) = 0.8091 y(:,:,6) = 0.0631 y(:,:,7) = 0.6271 y(:,:,8) = 0.7828 y(:,:,9) = 0.3991 y(:,:,10) = 0.8350 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,5) = 0.8091 y(:,:,6) = 0.0631 y(:,:,7) = 0.6271 y(:,:,8) = 0.7828 y(:,:,9) = 0.3991 y(:,:,10) = 0.8350 y(:,:,11) = 0.9911 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,5) = 0.8091 y(:,:,6) = 0.0631 y(:,:,7) = 0.6271 y(:,:,8) = 0.7828 y(:,:,9) = 0.3991 y(:,:,10) = 0.8350 y(:,:,11) = 0.9911 y(:,:,12) = 0.7705 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,5) = 0.8091 y(:,:,6) = 0.0631 y(:,:,7) = 0.6271 y(:,:,8) = 0.7828 y(:,:,9) = 0.3991 y(:,:,10) = 0.8350 y(:,:,11) = 0.9911 y(:,:,12) = 0.7705 y(:,:,13) = 0.5265 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,5) = 0.8091 y(:,:,6) = 0.0631 y(:,:,7) = 0.6271 y(:,:,8) = 0.7828 y(:,:,9) = 0.3991 y(:,:,10) = 0.8350 y(:,:,11) = 0.9911 y(:,:,12) = 0.7705 y(:,:,13) = 0.5265 y(:,:,14) = 0.5441 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,5) = 0.8091 y(:,:,6) = 0.0631 y(:,:,7) = 0.6271 y(:,:,8) = 0.7828 y(:,:,9) = 0.3991 y(:,:,10) = 0.8350 y(:,:,11) = 0.9911 y(:,:,12) = 0.7705 y(:,:,13) = 0.5265 y(:,:,14) = 0.5441 y(:,:,15) = 0.0197 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,5) = 0.8091 y(:,:,6) = 0.0631 y(:,:,7) = 0.6271 y(:,:,8) = 0.7828 y(:,:,9) = 0.3991 y(:,:,10) = 0.8350 y(:,:,11) = 0.9911 y(:,:,12) = 0.7705 y(:,:,13) = 0.5265 y(:,:,14) = 0.5441 y(:,:,15) = 0.0197 y(:,:,16) = 0.3582 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,5) = 0.8091 y(:,:,6) = 0.0631 y(:,:,7) = 0.6271 y(:,:,8) = 0.7828 y(:,:,9) = 0.3991 y(:,:,10) = 0.8350 y(:,:,11) = 0.9911 y(:,:,12) = 0.7705 y(:,:,13) = 0.5265 y(:,:,14) = 0.5441 y(:,:,15) = 0.0197 y(:,:,16) = 0.3582 y(:,:,17) = 0.7131 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,5) = 0.8091 y(:,:,6) = 0.0631 y(:,:,7) = 0.6271 y(:,:,8) = 0.7828 y(:,:,9) = 0.3991 y(:,:,10) = 0.8350 y(:,:,11) = 0.9911 y(:,:,12) = 0.7705 y(:,:,13) = 0.5265 y(:,:,14) = 0.5441 y(:,:,15) = 0.0197 y(:,:,16) = 0.3582 y(:,:,17) = 0.7131 y(:,:,18) = 0.6116 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,5) = 0.8091 y(:,:,6) = 0.0631 y(:,:,7) = 0.6271 y(:,:,8) = 0.7828 y(:,:,9) = 0.3991 y(:,:,10) = 0.8350 y(:,:,11) = 0.9911 y(:,:,12) = 0.7705 y(:,:,13) = 0.5265 y(:,:,14) = 0.5441 y(:,:,15) = 0.0197 y(:,:,16) = 0.3582 y(:,:,17) = 0.7131 y(:,:,18) = 0.6116 y(:,:,19) = 0.9595 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,5) = 0.8091 y(:,:,6) = 0.0631 y(:,:,7) = 0.6271 y(:,:,8) = 0.7828 y(:,:,9) = 0.3991 y(:,:,10) = 0.8350 y(:,:,11) = 0.9911 y(:,:,12) = 0.7705 y(:,:,13) = 0.5265 y(:,:,14) = 0.5441 y(:,:,15) = 0.0197 y(:,:,16) = 0.3582 y(:,:,17) = 0.7131 y(:,:,18) = 0.6116 y(:,:,19) = 0.9595 y(:,:,20) = 0.7862 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,5) = 0.8091 y(:,:,6) = 0.0631 y(:,:,7) = 0.6271 y(:,:,8) = 0.7828 y(:,:,9) = 0.3991 y(:,:,10) = 0.8350 y(:,:,11) = 0.9911 y(:,:,12) = 0.7705 y(:,:,13) = 0.5265 y(:,:,14) = 0.5441 y(:,:,15) = 0.0197 y(:,:,16) = 0.3582 y(:,:,17) = 0.7131 y(:,:,18) = 0.6116 y(:,:,19) = 0.9595 y(:,:,20) = 0.7862 y(:,:,21) = 0.1988 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,5) = 0.8091 y(:,:,6) = 0.0631 y(:,:,7) = 0.6271 y(:,:,8) = 0.7828 y(:,:,9) = 0.3991 y(:,:,10) = 0.8350 y(:,:,11) = 0.9911 y(:,:,12) = 0.7705 y(:,:,13) = 0.5265 y(:,:,14) = 0.5441 y(:,:,15) = 0.0197 y(:,:,16) = 0.3582 y(:,:,17) = 0.7131 y(:,:,18) = 0.6116 y(:,:,19) = 0.9595 y(:,:,20) = 0.7862 y(:,:,21) = 0.1988 y(:,:,22) = 0.3336 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,5) = 0.8091 y(:,:,6) = 0.0631 y(:,:,7) = 0.6271 y(:,:,8) = 0.7828 y(:,:,9) = 0.3991 y(:,:,10) = 0.8350 y(:,:,11) = 0.9911 y(:,:,12) = 0.7705 y(:,:,13) = 0.5265 y(:,:,14) = 0.5441 y(:,:,15) = 0.0197 y(:,:,16) = 0.3582 y(:,:,17) = 0.7131 y(:,:,18) = 0.6116 y(:,:,19) = 0.9595 y(:,:,20) = 0.7862 y(:,:,21) = 0.1988 y(:,:,22) = 0.3336 y(:,:,23) = 0.3983 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,5) = 0.8091 y(:,:,6) = 0.0631 y(:,:,7) = 0.6271 y(:,:,8) = 0.7828 y(:,:,9) = 0.3991 y(:,:,10) = 0.8350 y(:,:,11) = 0.9911 y(:,:,12) = 0.7705 y(:,:,13) = 0.5265 y(:,:,14) = 0.5441 y(:,:,15) = 0.0197 y(:,:,16) = 0.3582 y(:,:,17) = 0.7131 y(:,:,18) = 0.6116 y(:,:,19) = 0.9595 y(:,:,20) = 0.7862 y(:,:,21) = 0.1988 y(:,:,22) = 0.3336 y(:,:,23) = 0.3983 y(:,:,24) = 0.5836 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,5) = 0.8091 y(:,:,6) = 0.0631 y(:,:,7) = 0.6271 y(:,:,8) = 0.7828 y(:,:,9) = 0.3991 y(:,:,10) = 0.8350 y(:,:,11) = 0.9911 y(:,:,12) = 0.7705 y(:,:,13) = 0.5265 y(:,:,14) = 0.5441 y(:,:,15) = 0.0197 y(:,:,16) = 0.3582 y(:,:,17) = 0.7131 y(:,:,18) = 0.6116 y(:,:,19) = 0.9595 y(:,:,20) = 0.7862 y(:,:,21) = 0.1988 y(:,:,22) = 0.3336 y(:,:,23) = 0.3983 y(:,:,24) = 0.5836 y(:,:,25) = 0.9076 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,5) = 0.8091 y(:,:,6) = 0.0631 y(:,:,7) = 0.6271 y(:,:,8) = 0.7828 y(:,:,9) = 0.3991 y(:,:,10) = 0.8350 y(:,:,11) = 0.9911 y(:,:,12) = 0.7705 y(:,:,13) = 0.5265 y(:,:,14) = 0.5441 y(:,:,15) = 0.0197 y(:,:,16) = 0.3582 y(:,:,17) = 0.7131 y(:,:,18) = 0.6116 y(:,:,19) = 0.9595 y(:,:,20) = 0.7862 y(:,:,21) = 0.1988 y(:,:,22) = 0.3336 y(:,:,23) = 0.3983 y(:,:,24) = 0.5836 y(:,:,25) = 0.9076 y(:,:,26) = 0.7882 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,5) = 0.8091 y(:,:,6) = 0.0631 y(:,:,7) = 0.6271 y(:,:,8) = 0.7828 y(:,:,9) = 0.3991 y(:,:,10) = 0.8350 y(:,:,11) = 0.9911 y(:,:,12) = 0.7705 y(:,:,13) = 0.5265 y(:,:,14) = 0.5441 y(:,:,15) = 0.0197 y(:,:,16) = 0.3582 y(:,:,17) = 0.7131 y(:,:,18) = 0.6116 y(:,:,19) = 0.9595 y(:,:,20) = 0.7862 y(:,:,21) = 0.1988 y(:,:,22) = 0.3336 y(:,:,23) = 0.3983 y(:,:,24) = 0.5836 y(:,:,25) = 0.9076 y(:,:,26) = 0.7882 y(:,:,27) = 0.5394 y(:,:,1) = 0.9232 y(:,:,2) = 0.8374 y(:,:,3) = 0.3197 y(:,:,4) = 0.1719 y(:,:,5) = 0.8091 y(:,:,6) = 0.0631 y(:,:,7) = 0.6271 y(:,:,8) = 0.7828 y(:,:,9) = 0.3991 y(:,:,10) = 0.8350 y(:,:,11) = 0.9911 y(:,:,12) = 0.7705 y(:,:,13) = 0.5265 y(:,:,14) = 0.5441 y(:,:,15) = 0.0197 y(:,:...

5   Pass
x = reshape(1:40,[2,2,10]); y_correct(:,:,1) = [1 0;2 4]; y_correct(:,:,2) = [5 0;6 8]; y_correct(:,:,3) = [9 0;10 12]; y_correct(:,:,4) = [13 0;14 16]; y_correct(:,:,5) = [17 0;18 20]; y_correct(:,:,6) = [21 0;22 24]; y_correct(:,:,7) = [25 0;26 28]; y_correct(:,:,8) = [29 0;30 32]; y_correct(:,:,9) = [33 0;34 36]; y_correct(:,:,10) = [37 0;38 40]; assert(isequal(tril3(x),y_correct))

y = 1 0 2 4 y(:,:,1) = 1 0 2 4 y(:,:,2) = 5 0 6 8 y(:,:,1) = 1 0 2 4 y(:,:,2) = 5 0 6 8 y(:,:,3) = 9 0 10 12 y(:,:,1) = 1 0 2 4 y(:,:,2) = 5 0 6 8 y(:,:,3) = 9 0 10 12 y(:,:,4) = 13 0 14 16 y(:,:,1) = 1 0 2 4 y(:,:,2) = 5 0 6 8 y(:,:,3) = 9 0 10 12 y(:,:,4) = 13 0 14 16 y(:,:,5) = 17 0 18 20 y(:,:,1) = 1 0 2 4 y(:,:,2) = 5 0 6 8 y(:,:,3) = 9 0 10 12 y(:,:,4) = 13 0 14 16 y(:,:,5) = 17 0 18 20 y(:,:,6) = 21 0 22 24 y(:,:,1) = 1 0 2 4 y(:,:,2) = 5 0 6 8 y(:,:,3) = 9 0 10 12 y(:,:,4) = 13 0 14 16 y(:,:,5) = 17 0 18 20 y(:,:,6) = 21 0 22 24 y(:,:,7) = 25 0 26 28 y(:,:,1) = 1 0 2 4 y(:,:,2) = 5 0 6 8 y(:,:,3) = 9 0 10 12 y(:,:,4) = 13 0 14 16 y(:,:,5) = 17 0 18 20 y(:,:,6) = 21 0 22 24 y(:,:,7) = 25 0 26 28 y(:,:,8) = 29 0 30 32 y(:,:,1) = 1 0 2 4 y(:,:,2) = 5 0 6 8 y(:,:,3) = 9 0 10 12 y(:,:,4) = 13 0 14 16 y(:,:,5) = 17 0 18 20 y(:,:,6) = 21 0 22 24 y(:,:,7) = 25 0 26 28 y(:,:,8) = 29 0 30 32 y(:,:,9) = 33 0 34 36 y(:,:,1) = 1 0 2 4 y(:,:,2) = 5 0 6 8 y(:,:,3) = 9 0 10 12 y(:,:,4) = 13 0 14 16 y(:,:,5) = 17 0 18 20 y(:,:,6) = 21 0 22 24 y(:,:,7) = 25 0 26 28 y(:,:,8) = 29 0 30 32 y(:,:,9) = 33 0 34 36 y(:,:,10) = 37 0 38 40

6   Pass
x = randi([0 1],[4,4,5]); y_correct(:,:,1) = tril(x(:,:,1)); y_correct(:,:,2) = tril(x(:,:,2)); y_correct(:,:,3) = tril(x(:,:,3)); y_correct(:,:,4) = tril(x(:,:,4)); y_correct(:,:,5) = tril(x(:,:,5)); assert(isequal(tril3(x),y_correct))

y = 1 0 0 0 1 1 0 0 0 0 0 0 0 0 0 1 y(:,:,1) = 1 0 0 0 1 1 0 0 0 0 0 0 0 0 0 1 y(:,:,2) = 1 0 0 0 1 1 0 0 1 0 1 0 1 1 1 0 y(:,:,1) = 1 0 0 0 1 1 0 0 0 0 0 0 0 0 0 1 y(:,:,2) = 1 0 0 0 1 1 0 0 1 0 1 0 1 1 1 0 y(:,:,3) = 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 1 y(:,:,1) = 1 0 0 0 1 1 0 0 0 0 0 0 0 0 0 1 y(:,:,2) = 1 0 0 0 1 1 0 0 1 0 1 0 1 1 1 0 y(:,:,3) = 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 1 y(:,:,4) = 1 0 0 0 1 1 0 0 1 1 0 0 0 1 1 1 y(:,:,1) = 1 0 0 0 1 1 0 0 0 0 0 0 0 0 0 1 y(:,:,2) = 1 0 0 0 1 1 0 0 1 0 1 0 1 1 1 0 y(:,:,3) = 1 0 0 0 0 1 0 0 0 1 0 0 0 1 0 1 y(:,:,4) = 1 0 0 0 1 1 0 0 1 1 0 0 0 1 1 1 y(:,:,5) = 0 0 0 0 0 0 0 0 0 1 0 0 1 0 1 1

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