How can i find an eleiment which comes only one in a matrix ?????

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raj singh
raj singh 2016-6-22
回答： Jos (10584) 2016-6-24
Example
A=[1 2;1 3;1 4;1 5;2 4]
Ans should be [3 5]

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Azzi Abdelmalek
Azzi Abdelmalek 2016-6-22
编辑：Azzi Abdelmalek 2016-6-22
A=[1 2;1 3;1 4;1 5;2 4]
[ii,jj,kk]=unique(A)
b=accumarray(kk,(1:numel(kk))',[],@numel)
out=ii(b==1)

更多回答（1 个）

Jos (10584)
Jos (10584) 2016-6-24
When A only contains positive integers:
A = [1 2 3 1 2 4 1 2 4 5]
B = find(sparse(A(:),1,1)==1)

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