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

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Rikke
Rikke el 10 de Abr. de 2019
Comentada: Rikke el 10 de Abr. de 2019
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.

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Stephen23
Stephen23 el 10 de Abr. de 2019
Editada: Stephen23 el 10 de Abr. de 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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