You are given two strings s and t such that every character occurs at most once in s and t is a permutation of s.
The permutation difference between s and t is defined as the sum of the absolute difference between the index of the occurrence of each character in s and the index of the occurrence of the same character in t.
Return the permutation difference between s and t.
Examples
Example 1
Input: s = "abc", t = "bac"
Output: 2
Explanation:
For s = "abc" and t = "bac" , the permutation difference of s and t is equal to the sum of:
That is, the permutation difference between s and t is equal to |0 - 1| + |1 - 0| + |2 - 2| = 2 .
Example 2
Input: s = "abcde", t = "edbac"
Output: 12
Explanation: The permutation difference between s and t is equal to |0 - 3| + |1 - 2| + |2 - 4| + |3 - 1| + |4 - 0| = 12 .
Constraints
1 <= s.length <= 26
Each character occurs at most once in s.
t is a permutation of s.
s consists only of lowercase English letters.
3146. Permutation Difference between Two Strings
Easy
10 Points
Hash Table
String
You are given two strings s and t such that every character occurs at most once in s and t is a permutation of s.
The permutation difference between s and t is defined as the sum of the absolute difference between the index of the occurrence of each character in s and the index of the occurrence of the same character in t.
Return the permutation difference between s and t.
Examples
Example 1
Input: s = "abc", t = "bac"
Output: 2
Explanation:
For s = "abc" and t = "bac" , the permutation difference of s and t is equal to the sum of:
That is, the permutation difference between s and t is equal to |0 - 1| + |1 - 0| + |2 - 2| = 2 .
Example 2
Input: s = "abcde", t = "edbac"
Output: 12
Explanation: The permutation difference between s and t is equal to |0 - 3| + |1 - 2| + |2 - 4| + |3 - 1| + |4 - 0| = 12 .
Constraints
1 <= s.length <= 26
Each character occurs at most once in s.
t is a permutation of s.
s consists only of lowercase English letters.
Permutation Difference between Two Strings - Practice Coding | SlaveCode