Replacing n random zeros in a matrix with a specific nonzero value

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Suppose I start with a zero matrix
X = zeros(100)
How can I replace n random zeros in matrix X with a single nonzero value (e.g., replace 10 zero elements in the matrix X with 1)?

Accepted Answer

madhan ravi
madhan ravi on 2 Oct 2020
X(randperm(numel(X), 10)) = 1

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