Looking for chars in string.

Hi gurus.

I'm looking for a algorithm to search portions of string that have the same caracter. The only possible values are: a,n and g

Char index: 0 1 2 3 4 5 6 7 8 9 RESULT
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Example 1: a g g g a a 0,4
Example 2: g g g a n n a 0,3
Example 3: a g g g g g g a 0,7
Example 4: g g g g g g g 0,6
Example 5: g g a a g a a a g 0,2,3,5,7,8


Thanks in advance, I'm collapsed :o

Best regards

Your question isn't clear to me.

Quote:

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Originally Posted by GCDEF

Your question isn't clear to me.

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Nor to me either. I don't understand your example result numbers.

You are looking for the index where the string changes from one char to another?

Code:

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std::string mystring = "ggaagaaag";
size_t index = 0;
char last = '\0';
for(std::string::iterator i = mystring.begin(); i < mystring.end(); ++i, ++index){
    if (*i != last) std::cout << index;
    last = *i;
}
std::cout << index;

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Is that what you are looking for?

Quote:

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Originally Posted by ninja9578

You are looking for the index where the string changes from one char to another?

Code:

---

std::string mystring = "ggaagaaag";
size_t index = 0;
char last = '\0';
for(std::string::iterator i = mystring.begin(); i < mystring.end(); ++i, ++index){
    if (*i != last) std::cout << index;
    last = *i;
}
std::cout << index;

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Is that what you are looking for?

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That's what I originally thought was required, but the output from this doesn't match the results of the given examples.