How make this matrix using for loop?

-1  0  0  0  0 0 0 0 0 0 0 0 0 0
 1  0  0  0  0 0 0 0 0 0 0 0 0 0
-1 -1  0  0  0 0 0 0 0 0 0 0 0 0
 1  1  0  0  0 0 0 0 0 0 0 0 0 0
-1 -1 -1  0  0 0 0 0 0 0 0 0 0 0
 1  1  1  0  0 0 0 0 0 0 0 0 0 0 
-1 -1 -1 -1  0 0 0 0 0 0 0 0 0 0
 1  1  1  1  0 0 0 0 0 0 0 0 0 0
-1 -1 -1 -1 -1 0 0 0 0 0 0 0 0 0
 1  1  1  1  1 0 0 0 0 0 0 0 0 0

Answer 1

[Stephen23]

Why use a loop?

>> M = zeros(10,14);
>> M(1:2:end,1:5) = -tril(ones(5));
>> M(2:2:end,1:5) = +tril(ones(5));

[Jeong_evolution]

excellent. thanks..

I think just use for loop...