how to delete column with one number only

Dear All,

I need to delete the columns with only one element from this matrix,

A   =[1     1     1     0     0
      0     1     0     0     0
      0     0     1     0     0
      0     0     0     1     1
      0     0     0     0     1
      0     0     1     0     0];

I used some command find with loop but it is not correct, is there any efficient idea.

thanks in advance.

Nadia,

Answer 1

[Azzi Abdelmalek]

A(:,sum(A)==1)=[]

[nadia nadi]

Thank you very much Azzi.