MATLAB: How to shuffle an array

array shuffling

Hi ,

I want to concatenate two arrays by shuffling in the following format.I used randperm it keeps on changing the array position.i need to maintain a static position for it.

a=[1 2 3 4 5]; b=[10 20 30 40 50]; if 'a' and 'b are two individual arrays say,then the concatenated array must be as follows

c=[1 10 2 20 3 30 4 40 5 50]

Best Answer

reshape([a;b],1,[]);

out = zeros(1,numel(a)*2);
out(1:2:end) = a;
out(2:2:end) = b;

Related Solutions

MATLAB: Pixel Shuffling and inverse shuffling

Suppose your shuffled image is S. Then

temp = reshape(1:numel(S), size(S));

temp will be an array of linear indices -- temp(k) will be k.

Now apply your forward shuffling routine to temp, generating temp_mapped . Each value in temp_mapped will appear only once, and the location temp_mapped == k is the place that the shuffle maps pixel #k to. So you can undo it:

unshuffled = zeros(size(S), class(S));
unshuffled(temp_map) = S;

and you can cross-check by shuffling this and checking that you get out S.

By the way, once you have temp_mapped, you can use it to do all future shuffling,

S1 = unsuffled(temp_map);
S2 = S1(temp_map);
S3 = S2(temp_map);

and S3 would be unsuffled shuffled 3 times, without having to do any further computation of indices.

MATLAB: Please help

A = [1,10; 20,30];
for i = 0:4
  B = A + [i,0; 0,0];
  disp(B);
end

A = [1,10; 20,30];
a11 = A(1, 1);
for i = 0:4
  A(1) = a11 + i;
  disp(A);
end

Best Answer

Related Solutions

MATLAB: Pixel Shuffling and inverse shuffling

MATLAB: Please help

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