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

16337 Solutions
5718 Solvers

Last Solution submitted on Oct 22, 2021

Last 200 Solutions

Problem Comments

5 Comments

5 Comments

Show 2 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

Solution Comments

Solution 5668775

1 Comment

1 Comment

john perkins on 4 May 2021

nice

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

1 Comment

1 Comment

Piero Cimule on 19 Jun 2020

[r, q] = deal(a,b)

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 Solvers5718

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 Solvers5718

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 Solvers5718

Suggested Problems

More from this Author5

Problem Tags

Community Treasure Hunt

Players