Find a repeated numbers out of 3 boxes

Posted by james1 on Stack Overflow See other posts from Stack Overflow or by james1
Published on 2010-04-24T03:45:36Z Indexed on 2010/04/24 4:03 UTC
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repeated

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java

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algorithm

I have 3 boxes, each box contain 10 piece of numbered paper (1 - 10) but there is a number the same in all 3 boxes eg: box1 has number 4 and box2 has number 4 and box3 also has number 4. How to find that repeated number in java with an efficient/fastest way possible?

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