Problem 568. Number of 1s in a binary string

Created by Srivardhini

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Solution Stats

6228 Solutions
2070 Solvers

Last Solution submitted on Oct 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 3010495

1 Comment

1 Comment

Siam Sadik on 30 Sep 2020 at 14:43

What's wrong with this problem!!

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

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 Solvers2070

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binary sum

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Problem 568. Number of 1s in a binary string

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Problem 568. Number of 1s in a binary string

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