MATLAB: Store occurrences of an array in an equal sized array

arrayocurrences

Good morning,
I would like to count the occurrences of all the elements of an array generating a new array that stores the value in the corresponding cell. (Matlab R2018a)
Here is an example of input, output:
Input = [1 2 3 3 4 5 5;
             2 4 5 1 2 3 4;
             1 1 2 2 3 3 5]
Output = [ 4 5 5 5 3 4 4;
                 5 3 4 4 5 5 3;
                 4 4 5 5 5 5 4]
Thank you very much.

Best Answer

[~,~,c] = unique(Input);
Counts = accumarray(c,1);
Output = Counts(Input)
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