How to eliminate the elements in an array from another array when there are repeated elements in both arrays?

For example,

A = [ 1,2,2,2,3,4];

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

What I expect is A eliminate elements from B ( 2 with exact the same number of repeats) to get C = [2,4];

Thanks!

Answer 1

[Matt J]

A = [ 1,2,2,2,3,4];
B = [1,2,2,3];

Au=[unique(A),inf]; 

reps=max( histcounts(A,Au)-histcounts(B,Au)  ,0);

C=repelem(Au(1:end-1),reps)

C = 1×2

2 4