Transformation

Question

If a symbol is 'A' and next is 'B', transform two symbols in 'C'
Input: ABHJKAB
Output: CHJKC

Answer 1

#include <iostream>
#include <string>
#include <regex>

std::string new_str(std::string o)
{
return std::regex_replace(o, std::regex("AB"), "C");
}

int main()
{
std::cout << new_str("ABHJKAB");
return 0;
}

Answer 2

@Hatsy Rei, can I do two replacements using regex_replace? For example I need to transform not only "AB" but and "BA" too

Answer 3

and if I have "ABABA"
I must get "CCA"

Answer 4

oh I got