How to find the number of times an elements occurs in an array and copy to another array with same index

What I need is to find the number of times the elements repeat themselves in an array and copy the count to another array with the same index. I'll illustrate what i want by example:

A[4]=[1 4 6 1 5]

B[6]=[2 0 0 1 1 1]

Here,1 appears twice in A, so B[1]=2, 2 doesn't appear so B[2]=0, 3 doesn't appear so B[3]=0, 4,5 and 6 appear once so B[4]=1,B[5]=1,B[6]=1.

Answer 1

[James Tursa]

If you have a later version of MATLAB:

>> A = [1 4 6 1 5]
A =
     1     4     6     1     5
>> B = histcounts(A,max(A))
B =
     2     0     0     1     1     1

Or the "not recommended" older histc:

>> B = histc(A,1:max(A))
B =
     2     0     0     1     1     1

[Kirtiman]

Thank you very much. Neat.