Problem 532. Return unique values without sorting

Created by Aurelien Queffurust

Solve Later

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

Solution Stats

1075 Solutions
490 Solvers

Last Solution submitted on Jan 13, 2020

Last 200 Solutions

Problem Comments

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.

Problem Recent Solvers490

Problem Tags

sorted unique

Problem 532. Return unique values without sorting

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers490

Suggested Problems

More from this Author30

Problem Tags

Problem 532. Return unique values without sorting

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers490

Suggested Problems

More from this Author30

Problem Tags

Players