from code below i get 10 matrix values,using randperm function,please can anyone tell how to perform without using randperm,
A=imread('dock.jpg');A=rgb2gray(A);A=imresize(A,[256 256])A=double(A)n = numel(A);A1_10 = repmat(A,[1,1,10]);t = ones(size(A));for j1 = 1:size(A1_10,3) p = t; k = randperm(n); k1=[1:n]; p(k(1:6000)) = 0; A1_10(:,:,j1) = A1_10(:,:,j1).*p;endA1_10
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