Convert a snake case to a camel case

Problem

Convert from snake-case to camel-case and return it.

Example

input: 
naver_webtoon
NAVER_WEBTOON

output:
naverWebtoon
naverWebtoon

written in C++

Solution 1

1. loop through the snake case string
2. As iterationg, have a boolean ‘cap’ and update it if there is a underdash to convert the next letter to cap
   Time Complexity = O(n)

string convertCamel(string snake){
    string camel;
    bool cap = false;
    for(char c : snake){
        if(!cap && (int)c < 91){//if the char is cap when it shouldn't be
            camel.push_back(tolower(c)); 
        }else if(c == '_'){//if there is an underdash, the next char should be capitalized
            cap = true;
        }else if(cap){//if there should be a cap char convert the char to cap if it is not. Else, just push it back
            if((int)c > 97){
                camel.push_back(toupper(c));
            }else{
                camel.push_back(c);
            }
            cap = false;
        }else{
            camel.push_back(c);
        }
    }
    return camel;
}