Problem 568. Number of 1s in a binary string

Created by Srivardhini

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 number of 1s in the given binary string. Example. If the input string is '1100101', the output is 4. If the input string is '0000', the output is 0</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

5868 Solutions
2131 Solvers

Last Solution submitted on Sep 22, 2020

Last 200 Solutions

Problem Comments

2 Comments

2 Comments

Ryan McBurney on 30 Aug 2019

Something weird is happening

When I submit the size of my code is -1 and it fails the test suite when it seems to work fine in MATLAB desktop.

Fakhteh Ghalami on 9 Nov 2019

would you please let me know why
sum(x) creates error?

Solution Comments

Solution 2677466

2 Comments

2 Comments

evan muas on 10 Jul 2020

used y=y+str2double(x(i)) instead of y=y+str2double(x(i)) and it worked just fine

Sanchita Malla on 29 Aug 2020 at 10:28

function y = one(x)
y1=[];
for a=x(1:end)
y1 = [y1,str2num(a)];
end
y=sum(y1);
end

Solution 2586394

1 Comment

1 Comment

Piero Cimule on 20 Jun 2020

y=0;
for index=1:length(x)
y = y + str2num(x(index));
end

Solution 1936835

1 Comment

1 Comment

源樹上林 on 13 Aug 2020

y = sum(x=='1');

Solution 1882740

2 Comments

2 Comments

Sarah Walls on 24 Jul 2019

Why doesn't this solution work? Works just fine in my desktop program...

Marius Mueller on 17 Mar 2020

Because you compare a char Array to a double. Try (x=='1').

Problem Recent Solvers2131

Problem Tags

binary sum

Problem 568. Number of 1s in a binary string

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers2131

Suggested Problems

More from this Author1

Problem Tags

Problem 568. Number of 1s in a binary string

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers2131

Suggested Problems

More from this Author1

Problem Tags

Players