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.
\n
Example 1:
\n\nInput: s = "abc", t = "bac"
\n\nOutput: 2
\n\nExplanation:
\n\nFor s = "abc" and t = "bac", the permutation difference of s and t is equal to the sum of:
"a" in s and the index of the occurrence of "a" in t."b" in s and the index of the occurrence of "b" in t."c" in s and the index of the occurrence of "c" in t.That is, the permutation difference between s and t is equal to |0 - 1| + |2 - 2| + |1 - 0| = 2.
Example 2:
\n\nInput: s = "abcde", t = "edbac"
\n\nOutput: 12
\n\nExplanation: The permutation difference between s and t is equal to |0 - 3| + |1 - 2| + |2 - 4| + |3 - 1| + |4 - 0| = 12.
\n
Constraints:
\n\n1 <= s.length <= 26s.t is a permutation of s.s consists only of lowercase English letters.s then in string t."
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