scoreOfString.js

/**
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.


Example 1:
Input: s = "hello"
Output: 13
Explanation:
The ASCII values of the characters in s are: 'h' = 104, 'e' = 101, 'l' = 108, 'o' = 111. So, the score of s would be |104 - 101| + |101 - 108| + |108 - 108| + |108 - 111| = 3 + 7 + 0 + 3 = 13.

Example 2:
Input: s = "zaz"
Output: 50
Explanation:
The ASCII values of the characters in s are: 'z' = 122, 'a' = 97. So, the score of s would be |122 - 97| + |97 - 122| = 25 + 25 = 50.

* @param {string} s
* @return {number}
*/
var scoreOfString = function (s) {
  let sum = 0;
  for (let i = 0; i < s.length - 1; i++) {
    let difference = Math.abs(s.charCodeAt(i) - s.charCodeAt(i + 1));
    sum += difference;
  }
  return sum;
};