- Difficulty: Medium
- Tags: LeetCode, Medium, Hash Table, String, Sorting, leetcode-2840, O(1), Freq Table
Problem
You are given two strings s1
and s2
, both of length n
, consisting of lowercase English letters.
You can apply the following operation on any of the two strings any number of times:
- Choose any two indices
i
andj
such thati < j
and the differencej - i
is even, then swap the two characters at those indices in the string.
Return true
if you can make the strings s1
and s2
equal, and false
otherwise.
Example 1:
Input: s1 = "abcdba", s2 = "cabdab" Output: true Explanation: We can apply the following operations on s1: - Choose the indices i = 0, j = 2. The resulting string is s1 = "cbadba". - Choose the indices i = 2, j = 4. The resulting string is s1 = "cbbdaa". - Choose the indices i = 1, j = 5. The resulting string is s1 = "cabdab" = s2.
Example 2:
Input: s1 = "abe", s2 = "bea" Output: false Explanation: It is not possible to make the two strings equal.
Constraints:
n == s1.length == s2.length
1 <= n <= 105
s1
ands2
consist only of lowercase English letters.