I have a string S='010101' I need to take each element from the string and check whether it 1,if it is one then the count is incremented by one in matlab?

I have a string S='010101' I need to take each element from the string and check whether it 1,if it is one then the count is incremented by one in matlab?

I have used the following code,but the value of count is not changing.

St='010101';
count=0;
a=0;
for i=1:6
  a=St(i);
   if(a==1)
       count=count+1;
   end
end

[Stephen23]

Don't use a loop for this, when vectorized code is much neater and faster:

str = '010101';
cumsum(str-'0')
nnz(str-'0')

[Thorsten]

Or

 sum(double(St) == double('1'))

or

 numel(findstr(St, '1'))

[Steven Lord]

Or, with no arithmetic (besides NNZ's counting):

 nnz(str == '1')

Answer 1

[Azzi Abdelmalek]

S='010101'
out=nnz(S-'0')

To correct your for loop

St='010101';
count=0;
a=0;
for i=1:6
a=St(i);
 if(a=='1')
     count=count+1;
 end
end

Answer 2

[Debarati Banerjee]

This seems to work:

St='010101'; 
count=0; 
a=0; 
for i=1:6 
  a=St(1,i); 
  if(str2num(a)==1) 
      count=count+1;
  end
end

[Anushka]

Thank you Mam,it also worked.