Find three numbers appeared only once using bit manipulation

Posted by shilk on Stack Overflow See other posts from Stack Overflow or by shilk
Published on 2010-06-09T04:02:56Z Indexed on 2010/06/09 4:12 UTC
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In a sequence of length n, where n=2k+3, that is there are k unique numbers appeared twice, how to find the three unique numbers that appeared only once using bit manipulation? for example, in sequence 1 1 2 6 3 6 5 7 7 the three unique numbers are 2 3 5.

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