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

9514 Solutions
3782 Solvers

Last Solution submitted on Sep 23, 2020

Last 200 Solutions

Problem Comments

4 Comments

4 Comments

Show 1 older comment

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 =)

Solution Comments

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

2 Comments

2 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.

Problem Recent Solvers3782

Problem Tags

Problem 262. Swap the input arguments

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers3782

Suggested Problems

More from this Author4

Problem Tags

Problem 262. Swap the input arguments

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers3782

Suggested Problems

More from this Author4

Problem Tags

Players