3110. Score of a String
Easy
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.
Constraints:
2 <= s.length <= 100
s consists only of lowercase English letters.
Solution:
/**
* @param String $s
* @return Integer
*/
function scoreOfString($s) {
$ans = 0;
for ($i = 1; $i < strlen($s); ++$i) {
$ans += abs(ord($s[$i]) – ord($s[$i – 1]));
}
return $ans;
}
}
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