Problem 1024. Doubling elements in a vector

Created by Abdelhak ARESMOUK

Solve Later

{"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","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\"?><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>Given the vector A, return B in which all numbers in A are doubling. So for:</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/><w:jc w:val=\"left\"/></w:pPr><w:r><w:t>A = [ 1 5 8 ]</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/><w:jc w:val=\"left\"/></w:pPr><w:r><w:t>then</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/><w:jc w:val=\"left\"/></w:pPr><w:r><w:t>B = [ 1 1 5 5 8 8 ]</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

9574 Solutions
4657 Solvers

Last Solution submitted on Jun 29, 2022

Last 200 Solutions

Problem Comments

5 Comments

5 Comments

Show 2 older comments

srisai vangara on 29 Apr 2020

Really found a lot of trouble to find the solution.
But could not find how someone could solve it just using a size of 7.

Sivaramarao B on 7 Jun 2020

good one

Kaiz Merchant on 4 Aug 2020

What matlab functions are useful for this ? (I did it with a loop)

Michael Green on 8 Feb 2021

Good problem if you don't use repelem

Javid Moraveji on 4 Jun 2022 at 7:48

I think the test should also check for column vectors and any vector with special variables Inf and NaN

Solution Comments

Solution 8496170

Solution 8290100

1 Comment

1 Comment

Siddharth Pachpor on 8 May 2022

tricky

Solution 7215760

1 Comment

1 Comment

Cayden Jarvis on 13 Dec 2021

I liked this problem!

Solution 6877769

2 Comments

2 Comments

Josh Klueber on 12 Nov 2021

tricky

Isabella Stellitano on 15 Nov 2021

good problem

Solution 6425764

Solution 6000860

1 Comment

1 Comment

Kossel E. LEGUEZIM on 22 Jun 2021

Nice!

Solution 5674430

1 Comment

1 Comment

john perkins on 4 May 2021

good problem

Solution 4144605

1 Comment

1 Comment

John Hackenberg on 11 Dec 2020

fun one

Solution 2589328

Solution 2513921

1 Comment

1 Comment

Batuhan CELIK on 10 Jun 2020

@ivan lyss Could you help me How solved this problam

Solution 1936856

1 Comment

1 Comment

Uchechukwu Obimma on 9 May 2020

Please, I need your help to solve this problem, ChanXy.

Problem Recent Solvers4657

Problem Tags

iteration loop vector

Community Treasure Hunt

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

Start Hunting!

Problem 1024. Doubling elements in a vector

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers4657

Suggested Problems

More from this Author2

Problem Tags

Community Treasure Hunt

Problem 1024. Doubling elements in a vector

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers4657

Suggested Problems

More from this Author2

Problem Tags

Community Treasure Hunt

Players