random matrix with a given number of specified elements
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Hello,
How can we generate a matrix n x n Whose elements can be only two values AND where number of one of those two elements is given?
For instance, in the 3 x 3 matrix elements can be only 0 et 1, But I want exactly 4 elements to be zeros (and therefore 5 elements to be ones)
Thank you
2 个评论
madhan ravi
2020-8-3
编辑：madhan ravi
2020-8-3
Did you try something for your homework ?
sko
2020-8-3
采纳的回答
madhan ravi
2020-8-3
编辑：madhan ravi
2020-8-3
v = [repelem(1, 5), repelem(0, 4)];
Wanted = v(reshape(randperm(numel(v)), 3, []))
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Bruno Luong
2020-8-3
编辑：Bruno Luong
2020-8-3
User inputs
matsz = [3,3];
n1 = 4; % number of desired 1s, no need to specify for 0s
Generate
B = zeros(matsz); % + 0;
B(randperm(numel(B),n1)) = 1;
Quick check
B
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