Problem 1678. Count consecutive 0's in between values of 1

Created by Chris E.

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>So you have some vector that contains 1's and 0's, and the goal is to return a vector that gives the number of 0's between each one. 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>Input = [0 1 0 0 0 1 0 1 1 1 0 0 0 1 0 1 1 0 0]</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>Output = [1 3 1 0 0 3 1 0 2]</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

624 Solutions
179 Solvers

Last Solution submitted on May 05, 2021

Last 200 Solutions

Problem Comments

2 Comments

2 Comments

shahriar memaran on 23 Mar 2017

My opinion is that the answers for this problem are wrong. The problem is asking for counting zeros between values 1. So for example for Input = [0 1 0 0 0 1 0 1 1 1 0 0 0 1 0 1 1 0 0] the correct Output is [3 1 0 0 3 1 0] and not [1 3 1 0 0 3 1 0 2]. Reasoning that there is no 1 at the beginning and at the end of the vector and so the beginning and end zeros should not be counted.

yurenchu on 15 Apr 2017

How about adding a test case in which vector x starts with a 1, such as x = [1 0 0 1 0] ? (Several of the submitted/approved solutions would give the answer as y = [0 2 1] instead of y = [2 1] . )

Solution Comments

Solution 2943265

1 Comment

1 Comment

Jimmy Sølvsteen Nielsen on 13 Sep 2020

I would suggest adding the base case x=[]; y=[] (or 0 depending on definition of the problem

Solution 268568

1 Comment

1 Comment

J.R.! Menzinger on 27 Jun 2013

I was looking for this solution:
http://www.mathworks.de/matlabcentral/cody/problems/1678-count-consecutive-0-s-in-between-values-of-1/solutions/267945
but I was not precise enough with the regexp... ;-)

Nice Shot!!

Problem Recent Solvers179

Problem Tags

consuctive 0's counting 0

Community Treasure Hunt

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

Start Hunting!

Problem 1678. Count consecutive 0's in between values of 1

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers179

Suggested Problems

More from this Author17

Problem Tags

Community Treasure Hunt

Problem 1678. Count consecutive 0's in between values of 1

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers179

Suggested Problems

More from this Author17

Problem Tags

Community Treasure Hunt

Players