1422. Maximum Score After Splitting a String

https://leetcode.com/problems/maximum-score-after-splitting-a-string

Description

Given a string s of zeros and ones, return the maximum score after splitting the string into two non-empty substrings (i.e. left substring and right substring).

The score after splitting a string is the number of zeros in the left substring plus the number of ones in the right substring.

Example 1:

**Input:** s = "011101"
**Output:** 5 
**Explanation:** 
All possible ways of splitting s into two non-empty substrings are:
left = "0" and right = "11101", score = 1 + 4 = 5 
left = "01" and right = "1101", score = 1 + 3 = 4 
left = "011" and right = "101", score = 1 + 2 = 3 
left = "0111" and right = "01", score = 1 + 1 = 2 
left = "01110" and right = "1", score = 2 + 1 = 3

Example 2:

**Input:** s = "00111"
**Output:** 5
**Explanation:** When left = "00" and right = "111", we get the maximum score = 2 + 3 = 5

Example 3:

**Input:** s = "1111"
**Output:** 3

Constraints:

• 2 <= s.length <= 500

• The string s consists of characters '0' and '1' only.

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