Given a string s formed from zeros and ones, return the maximum score after splitting the string into two non-empty substrings (left and right).
The score after splitting a string is the number of zeros in the left substring plus the number of ones in the right substring.
maxScore("00111") ➞ 5
maxScore("1111") ➞ 3
maxScore("01001") ➞ 4
maxScore("010101010101010101") ➞ 10
N/A