Problem 2631. Flip the vector from right to left

Created by Pritesh Shah

Solve Later

{"relationships":[{"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>Flip the vector from right to left.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Examples</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[ x=[1:5], then y=[5 4 3 2 1]\n\n x=[1 4 6], then y=[6 4 1];]]></w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Request not to use direct function.</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

11174 Solutions
6117 Solvers

Last Solution submitted on Jan 31, 2023

Last 200 Solutions

Problem Comments

14 Comments

14 Comments

Show 11 older comments

Pritesh Shah on 15 Jul 2015

Try out this problem

Pritesh Shah on 16 Jul 2015

Try Out this cody questions...

Murugan C on 29 May 2019

How can we do for last test case.

Murugan C on 19 Jun 2019

Can any one help me out?

how to solve below test case
%%
code = fileread('flip_vector.m');
assert(isempty(strfind(code, 'fliplr')));

zaid aldailami on 15 Jan 2020

Nice tricky problem
y=x(end:-1:1) I think this might help

Israt Jahan on 26 Mar 2020

You cannot pass the last test suite if you use the function fliplr

william katzianer on 30 Dec 2020

flipud(x')'

... didn't say anything about allowing flipud!

Ambesh Mishra on 29 Apr 2021

pretty simple

Ankit Meena on 14 Sep 2022

code = fileread('flip_vector.m');
assert(isempty(strfind(code, 'fliplr')));
Assertion failed.

Can anyone give me idea what is 'flip_vector.m' here?

Dyuman Joshi on 14 Sep 2022

@Ankit Meena,

'flip_vector.m' is the function file for the solution code submitted.

"code = fileread('flip_vector.m'); " -> This line of code is used to obtain the contents of your solution as a text file. And the next line of code checks for any requirement.

You can check that the first line in your solution will be -

function output = flip_vector(input)
(output and input being placeholders)

I hope this answers your question.

Gustavo Oliveira on 14 Sep 2022

Nice problem

Kanishk on 10 Nov 2022

Nice problem!

Nicolas Douillet on 30 Nov 2022

Not using Matlab dedicated function to this should be written in the problem statements. I dislike this kind of "twist". Nonsense.

Dyuman Joshi on 1 Dec 2022

@Nicolas, It IS written in the problem statement -
"Request not to use direct function."

Solution Comments

Solution 9915493

1 Comment

1 Comment

Li-Pang on 30 Nov 2022

Solution 7607725

1 Comment

1 Comment

Jakeb Chouinard on 2 Mar 2022

Fairly straightforward even if you don't use flip or flip variants

Solution 7267775

1 Comment

1 Comment

Robert Petrow on 16 Dec 2021

Above average

Solution 7266605

1 Comment

1 Comment

David Bichara on 16 Dec 2021

medium-low difficulty

Solution 7265985

1 Comment

1 Comment

Nicholas Wickersham on 16 Dec 2021

easy

Solution 7260725

1 Comment

1 Comment

Hayley Sussman on 15 Dec 2021

This was intuitive for me.

Solution 6871424

2 Comments

2 Comments

Josh Klueber on 11 Nov 2021

tricky

Isabella Stellitano on 13 Nov 2021

good problem

Solution 6770963

1 Comment

1 Comment

建国田 on 26 Oct 2021

A good problem!

Solution 5674095

1 Comment

1 Comment

john perkins on 4 May 2021

good problem

Solution 4142775

1 Comment

1 Comment

Cory Cunningham on 11 Dec 2020

awesome

Solution 3797043

1 Comment

1 Comment

Zhang Peter on 23 Nov 2020

Solution 2589259

2 Comments

2 Comments

Piero Cimule on 20 Jun 2020

y=flip(x);

suyog choudhari on 8 Aug 2020

for i = 1:length(y)
z(i) = y((length(y)-i+1));
end;

Solution 2508332

1 Comment

1 Comment

AJEET KUMAR on 10 Jun 2020

Fail
code = fileread('flip_vector.m');
assert(isempty(strfind(code, 'fliplr')));
Assertion failed.

Can anyone suggest what is 'flip_vector.m' here?

Solution 1936854

1 Comment

1 Comment

Gregory Fenn on 9 Dec 2020

That looks like cheating without even an ironic comment saying it is a cheat...

Problem Recent Solvers6117

Problem Tags

Community Treasure Hunt

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

Start Hunting!

Problem 2631. Flip the vector from right to left

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers6117

Suggested Problems

More from this Author70

Problem Tags

Community Treasure Hunt

Problem 2631. Flip the vector from right to left

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers6117

Suggested Problems

More from this Author70

Problem Tags

Community Treasure Hunt

Players