2000. Reverse Prefix of Word

class Solution {
public:
    
    string reversePrefix(string word, char ch) {
        int p=0;
        for(int i=0; i<word.size(); i++)
        {
            if(word[i]==ch)
            {   
                p=i;
                break;
            }
        }
       int  i=0;
        while(i<p)
        {
            swap(word[i],word[p]);
            i++;
            p--;
        }
        return word;
        
    }
};