Problem 532. Return unique values without sorting

If the input vector A is [42 1 1],

the output value B must be the unique values [42 1]

The values of B are in the same order as A

2 Comments

@bmtran on 27 Mar 2012

perhaps you should specify that y is in the order of the first occurence of each unique element of x

Peter Wittenberg on 6 Oct 2012

This would be a better problem if unique and sort functions were not allowed

1 Comment

Mark on 1 Jun 2012

Note 1) this solution does not use sort() anywhere :) 2) the more elegant "stable" is not available for unique in pre-2012 MATLAB.