3110. Score of a String

You are given a string s. The score of a string is defined as the sum of the absolute difference between the ASCII values of adjacent characters.

Return the score of s.

class Solution {
public:
    int scoreOfString(string s) {
        int res = 0;
        for(int i = 0; i < s.length() - 1; i++) {
            res += abs(s[i] - s[i+1]);
        }
        return res;
    }
};