MATLAB: How to remove column with the same value

column remove

Hi,

I have this matrix;

A = [0 0 0 0 1 1 1 1 2 2]

I want

to remove the 2nd, 3rd and 4th columns since their values are the same as the 1st column,
to remove the 6th, 7th and 8th columns since their values are the same as the 5th column,
and to to remove the 10th column since its value is the same as the 9th column.

So it becomes

B = [0 1 2]

Regards,

Thank you

B=unique(A)

out = ...
  bsxfun(@plus,reshape(bsxfun(@plus,.31:.1:.51,[0;.01]),1,[]),[0; .02*(1:99)']);

out = reshape(permute(reshape(...
             bsxfun(@plus,.31:.1:.51,[0;.01*(1:199)']).',3,2,[]),[3 2 1]),[],6);

A=rand(5,10)>0.95
if any(A(2,:))
  A(4,:)=0
end
if any(A(3,:))
  A(5,:)=0
end
if any(A(4,:))
  A(2,:)=0
end
if any(A(5,:))
  A([1 3],:)=0
end