hello friends, see I am executing a simple code . I want your little help in it.
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close all;
clear all;
clc;
str=('ttttttPttttPPttt');
estring(str)
-----------------------------------------function estring--------------------------------
function estring(str)
len = numel(str);
i = 0;
count = zeros(1,len);
while( i<len )
j=0;
count(i+1) = 1;
while( true )
j = j + 1;
if( i+j+1 > len )
break;
end
if( str(i+j+1)==str(i+1) )
count(i+1) = count(i+1) + 1;
else
break;
end
end
if( count(i+1)==1 )
a=str(i+1);
length(a);
fprintf('%c',a);
i = i + 1;
else
a=str(i+1);
b=count(i+1);
fprintf('%c%d',a,b);
i = i + b;
end
end
fprintf('\n');
end
this is giving output as t6Pt4P2t3. *I want estring to return the output to script. e.g
y=estring(str) in the script
function a=estring(str)
It is not working. Please suggest me how to do this.
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回答(2 个)
Geoff Hayes
2015-4-7
Tina - if you want your function to return a string (rather than writing it to the Command Window with fprintf) the first thing you have to do is change your function signature to return an output value
function [estr] = estring(str)
% initialize estr
estr = '';
Now replace all of your fprintf calls with code that will concatenate the estr with the new data. For example,
fprintf('%c',a);
becomes
estr = [estr a];
and
fprintf('%c%d',a,b);
becomes
estr = [estr a num2str(b)];
Try implementing the above and see what happens!
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Radha Krishna Maddukuri
2015-4-7
Hello Tina,
In the function that you have written, you are printing out values, rather you have to assign it to a variable. I have changed your code a bit:
function y = estring(str)
len = numel(str);
i = 0;
count = zeros(1,len);
y=[];
while( i<len )
j=0;
count(i+1) = 1;
while( true )
j = j + 1;
if( i+j+1 > len )
break;
end
if( str(i+j+1)==str(i+1) )
count(i+1) = count(i+1) + 1;
else
break;
end
end
if( count(i+1)==1 )
a=str(i+1);
length(a);
y = [y a];
i = i + 1;
else
a=str(i+1);
b=count(i+1);
y =[y a num2str(b)];
i = i + b;
end
end
end
From this function, when you execute the following command:
>> y = estring(str)
It will work.
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