Random number generation but alternative

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Asad Abbas 2016-9-1

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评论： John D'Errico 2016-9-1

Please help me. I want generate random number 0 and 1 as given code with constraints. Now my given constraint is 1st column and 2nd column not equal.

a=randi([0 1],24,7)
a(:,1)=~a(:,2)
e.g
0  1
1  0

How I can give the constraints in first 3 columns such as any two column become 0 and only one column should be 1? e.g.

0 1
0 0
1 0

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Answer 1

John D'Errico 2016-9-1

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For each row, just pick a random column from the first k columns (where k is either 2 or 3, depending on your problem) to put a 1 in. Leave the other columns as 0. WTP?

If the other columns of your matrix have no constraints, then just generate them randomly.

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Asad Abbas 2016-9-1

Thank you so much. Can you please explain more?

John D'Errico 2016-9-1

Oh, come on. You already know how to use randi. Use it to generate a random number from 1 to 3. If you have no idea how to do this in one vectorized operation, then use a loop. If you have no clue how to use even a loop, so basic MATLAB, then you need to read the tutorials.

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