Problem 76. De-dupe

Created by Cody Team

Difficulty:Rate

Solve Later
Add To GroupÃ‚

Remove all the redundant elements in a vector, but keep the first occurrence of each value in its original location. So if

 a = [5 3 6 4 7 7 3 5 9]

then

 dedupe(a) = [5 3 6 4 7 9]

Solve

Solution Stats

5660 Solutions
3359 Solvers

Last Solution submitted on Mar 17, 2025

Last 200 Solutions

Problem Comments

4 Comments

4 Comments

Show 1 older comment

nhagen on 18 Mar 2015

solved in one line !
nice problem

David Verrelli on 7 Feb 2017

Hi, bainhome:
Cody is based on the 'current' version of MATLAB, not R2012b. Many functions are unchanged, but a few have changed (modified, new, or removed), including "unique".
You must add the 'legacy' flag to the list of arguments to preserve the behaviour of the "unique" function from R2012b and prior releases — refer to the documentation (link posted by Jakub Galecki).
—DIV

Hans Kramer on 29 Jun 2018

if u know a specific function its too easy.

Solution Comments

Show comments

Group

Matrix Manipulation I

16 Problems
98 Finishers

Problem Recent Solvers3359

Problem Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!