Problem 233. Reverse the vector

Created byVishwanathan Iyer

Like (33)

Solve Later

{“关系”:[{“relationshipType”:“http://schemas.mathworks.com/matlab/code/2013/relationships/document","targetMode":"","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","targetMode":"","relationshipId":"rId2","target":"/matlab/output.xml"}],"parts":[{"partUri":"/matlab/document.xml","relationship":[],"contentType":"application/vnd.mathworks.matlab.code.document+xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<w:document xmlns:w=\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\"><w:body><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Reverse the vector elements.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Example:</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[ Input x = [1,2,3,4,5,6,7,8,9] \n Output y = [9,8,7,6,5,4,3,2,1]]]></w:t></w:r></w:p></w:body></w:document>"},{"partUri":"/matlab/output.xml","contentType":"text/xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?><embeddedOutputs><metaData><evaluationState>manual</evaluationState><layoutState>code</layoutState><outputStatus>ready</outputStatus></metaData><outputArray type=\"array\"/><regionArray type=\"array\"/></embeddedOutputs>"}]}

Solve

Solution Stats

16062 Solutions
9206 Solvers

LastSolutionsubmitted on May 14, 2022

Last 200 Solutions

Problem Comments

8 Comments

8 Comments

Show 5 older comments

Ned Gulleyon 2 Feb 2012

Added some more tests.

Nicholas Howeon 13 Apr 2012

Test set needs a column vector.

Kristinon 18 May 2012

As far as timing goes ...

x=rand(100,1);
tic;y=flipud(x);toc
Elapsed time is 0.068947 seconds.
tic;y=x(end:-1:1);toc
Elapsed time is 0.000026 seconds.

Muhammad M Saharion 20 Dec 2016

innovative

Nicholas Bitleron 26 Nov 2020

thanks Kristin but I got it on my own

罗伯特·DADDAon 9 Dec 2020

I'm not understanding why sort(x, 'descend') is not correct. On matlab works.

Isabella Stellitanoon 26 Oct 2021

GOOD

Gizem Deniz Akkason 18 Apr 2022 at 7:58

function y = rev(x)
y=sort(x,'descend');
end

i'm doing like this but i have 1 assertion error ? what's wrong?

Solution Comments

Solution 6810830

1 Comment

1 Comment

Josh Klueberon 2 Nov 2021

good problem

Solution 6734908

1 Comment

1 Comment

Suhas Kadalagere Sampathon 20 Oct 2021

good one

Solution 5918270

1 Comment

1 Comment

Mouhamed Niasseon 7 Jun 2021

//www.tianjin-qmedu.com/help/matlab/ref/flip.html

Solution 5667115

1 Comment

1 Comment

john perkinson 4 May 2021

nice

Solution 5152353

1 Comment

1 Comment

Selahattin Alanon 23 Mar 2021

easy

解决方案3575770

Solution 3034798

1 Comment

1 Comment

Tatjana Dulinskieneon 2 Oct 2020

easy

Solution 2289798

1 Comment

1 Comment

Edward Vaughnon 17 May 2020

I see I'm going to have to memorize a lot of this syntax to make my life easier.

Solution 1885342

1 Comment

1 Comment

Ashish Khulbeyon 27 Jul 2019

This link can help:
https://in.mathworks.com/help/matlab/ref/fliplr.html

Solution 1730215

Solution 1101193

1 Comment

1 Comment

Yoshimasa Nakatanion 10 Jan 2017

I did it!
(^^)v

Solution 1094317

1 Comment

1 Comment

TAYALAN SIVALINGAMon 29 Dec 2016

Solution 1024425

1 Comment

1 Comment

Ian Harrisonon 20 Oct 2016

Errors in the test suite.

解决方案997251

1 Comment

1 Comment

David Verrellion 3 Sep 2018

This user (mohamed elbesealy) appears to have gamed the system, with fraudulent "likes" of this unremarkable solution submitted by 'sock-puppet' accounts. —DIV

Solution 832503

1 Comment

1 Comment

Pooja Narayanon 19 Feb 2016

Never knew about rot90. I did, y = x(length(x):-1:1) and the size was 19! Learnt something new..

Solution 788174

1 Comment

1 Comment

Alexey Sinitsinon 4 Dec 2015

That was easy

Solution 441189

1 Comment

1 Comment

Joseph Pauwelson 10 May 2014

we had a similar problem in my class

Solution 392029

1 Comment

1 Comment

Ufuk Tameron 27 Jan 2014

easy one

Solution 242508

1 Comment

1 Comment

hanciongon 10 May 2013

how to make the code even shorter than this???

Solution 105761

1 Comment

1 Comment

li haitaoon 14 Nov 2012

helpfull!

Solution 76025

1 Comment

1 Comment

Nicholas Howeon 13 Apr 2012

Test set needs a column vector.

Problem Recent Solvers9206

Problem Tags

Community Treasure Hunt

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

Start Hunting!

Problem 233. Reverse the vector

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers9206

Suggested Problems

More from this Author1

Problem Tags

Community Treasure Hunt

Problem 233. Reverse the vector

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers9206

Suggested Problems

More from this Author1

Problem Tags

Community Treasure Hunt

Players