Question

How to replace each repeated letter in a string with one letter in C++

Answer 1

#include <iostream>
#include <algorithm>
  
int main() {
    std::string str = "aabbbccccccccccdefgggggggggggg";
    
    str.erase(std::unique(str.begin(), str.end()), str.end());
    
    std::cout << str;
}
  
  
  
/*
run:
     
abcdefg
     
*/

 

Cleaner teeth, healthier you!
Get The Secret to a Bright and Healthy Smile