This Speed Performance Challenge is to optimize Unique for processing uint8/uint16/uint32 variables.
Input: A (column vector of uint8/uint16/uint32)
Output: B (column vector A processed by unique "like" function)
Scoring: Cumulative time, in msec, of "unique" processing of three medium size arrays.
Examples: [5;4;3;2;2;1] returns [1;2;3;4;5], and Fast
Hint: Help Unique, Legacy, Options
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