Problem 532. Return unique values without sorting

Created by Aurelien Queffurust

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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

Solve

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1088 Solutions
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Last Solution submitted on Mar 12, 2020

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3 Comments

3 Comments

@bmtran (Bryant Tran) 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

Jihye Sofia Seo on 10 Feb 2017

Nice problem!

Solution Comments

Solution 1206195

1 Comment

1 Comment

yurenchu on 7 Jun 2017

Solution without using sort(.) or unique(.) .

Solution 1206190

1 Comment

1 Comment

yurenchu on 7 Jun 2017

Solution without using sort(_) or unique(_) .

Solution 94556

1 Comment

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.

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Problem 532. Return unique values without sorting

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Last 200 Solutions

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Problem 532. Return unique values without sorting

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