Problem 147. Too mean-spirited

Created by the cyclist

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>Find the mean of each consecutive pair of numbers in the input row vector. For example,</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>x=[1 2 3] ----> y = [1.5 2.5]</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>x=[100 0 0 0 100] ----> y = [50 0 0 50]</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

3454 Solutions
1764 Solvers

Last Solution submitted on Jan 24, 2021

Last 200 Solutions

Problem Comments

Solution Comments

Solution 480291

2 Comments

2 Comments

Kirk on 29 Jul 2014

cheese

the cyclist on 30 Jul 2014

I added another test to the suite that invalidated this cheesy solution.

Solution 190557

2 Comments

2 Comments

Rodrigo Portugal on 29 Mar 2013

Why is eval forbidden while regexp isn't? Don't they have the same 'nature'?

Michael Cappello on 24 Oct 2013

It seems that the vast majority of leading solutions are size 10 or 11. If a problem has a single output, then having a return argument of 'ans' makes the size smaller. For instance:

function ans=findmean(x,y)
mean([x y])

is smaller in size than

function m=findmean(x,y)
m = mean([x y])

This seems silly, and makes me think that there is some 'trick' to these size 10&11 solutions that has little to do with good coding practices. Of course, it could just be sour grapes on my part because I can't get my sizes even close to that small.

Problem Recent Solvers1764

Problem Tags

mean

Community Treasure Hunt

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

Start Hunting!

Problem 147. Too mean-spirited

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers1764

Suggested Problems

More from this Author23

Problem Tags

Community Treasure Hunt

Problem 147. Too mean-spirited

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers1764

Suggested Problems

More from this Author23

Problem Tags

Community Treasure Hunt

Players