How can I count the occurrences of each element in a column vector and store them in a vector of the same dimension as the original one?

Hi, I have a vector A mx1 and I want to create a vector B mx1 reporting the number of occurrences of each element in A, e.g. if

A=[1;2;2;3;4;2;5;6;7;8;8];

then

B=[1;3;3;1;1;3;1;1;1;2;2];

I prefer not to use loops because actual vectors have very high dimensions.

Answer 1

[Roger Stafford]

 [c,ix] = histc(A,unique(A));
 B = c(ix);

Answer 2

[dpb]

N=histc(A,unique(A));
B=N(A);