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

Example

A=[1 2;1 3;1 4;1 5;2 4]

Ans should be [3 5]

Answer 1

[Azzi Abdelmalek]

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)

[Walter Roberson]

raj singh comments,

super fast

Answer 2

[Jos (10584)]

When A only contains positive integers:

A = [1 2 3 1 2 4 1 2 4 5]
B = find(sparse(A(:),1,1)==1)