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Remove some numbers from an array and replace them with zero?

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Lets say the array is like this:
A = [4 4 4 4 6 6 6 6 6 6 2 2 3 3 3 5 5 5 5 5 3 3 3];
How could I change the matrix to be like this:
B = [4 0 0 0 6 0 0 0 0 0 2 0 3 0 0 5 0 0 0 0 3 0 0];
I want to represent each new number in the array but not more than once. The numbers may occure several times as number three in this example.

Accepted Answer

Stephen23
Stephen23 on 10 Apr 2019
Edited: Stephen23 on 10 Apr 2019
>> A = [4,4,4,4,6,6,6,6,6,6,2,2,3,3,3,5,5,5,5,5,3,3,3]
A =
4 4 4 4 6 6 6 6 6 6 2 2 3 3 3 5 5 5 5 5 3 3 3
>> B = A;
>> B([false,~diff(B)]) = 0
B =
4 0 0 0 6 0 0 0 0 0 2 0 3 0 0 5 0 0 0 0 3 0 0

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