Could you provide an example in your problem statement? Also, as Evan says below, you should have more than one test case or it becomes a trivial matter to hard-code a particular answer.
Probably should add a couple more test cases so that silly people like me don't submit answers like this. ;)
Stuff the Board
Return elements unique to either input
Matlab Basics - Logical Tests I
Mr. Pyramidad & Ms. Whissy Bolower
Find the outlier in a set of samples
Check if any duplicates in your data
A Simple Tide Gauge with MATLAB
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