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

MATLABreplacezeros

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)?

Best Answer

X(randperm(numel(X), 10)) = 1