Problem 262. Swap the input arguments

Created by Steve Eddins

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>Write a two-input, two-output function that swaps its two input arguments. For example:</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[   [q,r] = swap(5,10)]]></w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>returns q = 10 and r = 5.</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

20243 Solutions
7398 Solvers

Last Solution submitted on Oct 07, 2022

Last 200 Solutions

Problem Comments

9 Comments

9 Comments

Show 6 older comments

Mattias on 4 Jan 2015

Your initial code suggestion is weird :)

源樹上林 on 13 Aug 2020

good!

Maryam HCTRAK Yousef on 14 Aug 2020

Why it is wrong?

Daniel MC on 22 Aug 2020

too easy =)

Sili Zeng on 26 Feb 2021

Corey Kurowski on 2 Mar 2022

This is one I can get behind.

Cullen Talhelm on 18 Apr 2022

easy money fellas

Kaushik on 12 Aug 2022

can someone please explain what exactly is size which is displayed after submitting the code?

Dyuman Joshi on 12 Aug 2022

Hello Kaushik,

Cody initially used a code-size point system for solving a problem, which gave you points according to the size of the solution. That was, the smaller your solution size, the more points you got.

The solution size is calculated as follows - "Cody uses a node-count calculation to determine the solution size based on the number of nodes in the parse tree. Think of size as code length. Comments do not contribute to code size."

(click Help button on your link dashboard or go to the link
https://in.mathworks.com/matlabcentral/content/cody/about.html)

Also note that the scoring system was changed to fixed points system (10 points for solving a problem) some time ago.

Solution Comments

Solution 8020810

2 Comments

2 Comments

Sara Almasy on 20 Apr 2022

easy bro

MD SHAHNAWAZ HUSSAIN on 1 Oct 2022 at 13:36

easy problem

Solution 7855280

1 Comment

1 Comment

Mahmut Burak Cinar on 8 Apr 2022

the hell with the cart2pol, long live the easy-to-use solutions!

Solution 7558445

Solution 7239350

1 Comment

1 Comment

Colin McNicholas on 13 Dec 2021

Not too difficult

Solution 6877204

1 Comment

1 Comment

Josh Klueber on 11 Nov 2021

good problem

Solution 5668775

2 Comments

2 Comments

john perkins on 4 May 2021

nice

Isabella Stellitano on 3 Nov 2021

GOOD

Solution 4137975

1 Comment

1 Comment

Cory Cunningham on 11 Dec 2020

Do I get points for commenting?

Solution 3068860

1 Comment

1 Comment

Tatjana Dulinskiene on 5 Oct 2020

easy

Solution 3035068

1 Comment

1 Comment

Tatjana Dulinskiene on 2 Oct 2020

good

Solution 2830158

1 Comment

1 Comment

Sankirna D. Joge on 13 Aug 2020

function [q,r] = swapInputs(a,b)
[q1,r1] = cart2pol(a,b);
q1=(pi/2)-q1;
[q,r]=pol2cart(q1,r1);
end

if u run above code in matlab it successfully swaps any input argument. why it is not accepting solution ?

Solution 2586181

Solution 1310820

1 Comment

1 Comment

Shlomo Geva on 23 Oct 2017

This is a correct solution - alas using a function handle, not an m-file

Solution 160408

2 Comments

2 Comments

pranju chakrapani on 10 May 2016

You are brilliant when you are lazy

Gustav Lindstrand on 30 Dec 2016

Omg love this solution so simple and easy really clever! Didn't think about this :)

Solution 29528

3 Comments

3 Comments

fkk on 25 Jul 2017

I feel so pride that I just get the same code like this leading one!!!

jo gayong on 5 Jul 2019

I had no idea it'd be this simple.

Omprakash B on 21 Sep 2021

Man! i am surprised looking at this! @Nikolai

Problem Recent Solvers7398

Problem Tags

Community Treasure Hunt

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

Start Hunting!

Problem 262. Swap the input arguments

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers7398

Suggested Problems

More from this Author5

Problem Tags

Community Treasure Hunt

Problem 262. Swap the input arguments

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers7398

Suggested Problems

More from this Author5

Problem Tags

Community Treasure Hunt

Players