Problem 44416. Sum of adjacent elements in a vector

Created by Shaul Salomon

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>Given a vector v, return a vector s containting the sum of every two adjacent elements in the vector.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Every element s(i) contains the sum of v(i) and v(i+1).</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Example:</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[ v = [1, 2, 4, 4, 5, 8]\n s = [3, 6, 8, 9, 13]]]></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

2846 Solutions
552 Solvers

Last Solution submitted on Aug 03, 2022

Last 200 Solutions

Problem Comments

Solution Comments

Solution 1799547

1 Comment

1 Comment

bentzi grinfeld on 29 Apr 2019

why this code is not correct?
s = summ(v)
>> b=s
>> s(1)=[]
>> c=[[s],0]
>> s=[b+c]
>> s(end)=[]

Solution 1359214

2 Comments

2 Comments

Shaul Salomon on 3 Dec 2017

sorry mate, this is unfair for those who actually came up with a compact solution

Samuele Grillo on 12 Dec 2017

No need to be sorry.
Personally I think the regexp should be always forbidden.
I used it (and I had never thought about it before) because it seems that everyone is using it.

Problem Recent Solvers552

Problem Tags

Community Treasure Hunt

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

Start Hunting!

Problem 44416. Sum of adjacent elements in a vector

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers552

Suggested Problems

More from this Author25

Problem Tags

Community Treasure Hunt

Problem 44416. Sum of adjacent elements in a vector

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers552

Suggested Problems

More from this Author25

Problem Tags

Community Treasure Hunt

Players