maximum-length-substring-with-two-occurrences
Given a string
s, return the maximum length of a substring such that it contains at most two occurrences of each character.
Example 1:
Input: s = "bcbbbcba"
Output: 4
Explanation:
The following substring has a length of 4 and contains at most two occurrences of each character:
"bcbbbcba".Example 2:
Input: s = "aaaa"
Output: 2
Explanation:
The following substring has a length of 2 and contains at most two occurrences of each character:
"aaaa".
Constraints:
2 <= s.length <= 100sconsists only of lowercase English letters.