How make this matrix using for loop?

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Jeong_evolution
Jeong_evolution il 20 Set 2017
Commentato: Jeong_evolution il 20 Set 2017
-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

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Stephen23
Stephen23 il 20 Set 2017
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));

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