how to delete column with one number only

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nadia nadi
nadia nadi 2016-4-21
评论： nadia nadi 2016-4-25
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,

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采纳的回答

Azzi Abdelmalek
Azzi Abdelmalek 2016-4-21
编辑：Azzi Abdelmalek 2016-4-21
A(:,sum(A)==1)=[]

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