leetcode 1422. 分割字符串的最大得分

 

class Solution:
    def maxScore(self, s: str) -> int:
        S = list(s)
        res=[]
        for i in range(1,len(S)):
            s1=S[:i]
            dic1 = collections.Counter(s1)
            s2 = S[i:]
            dic2 = collections.Counter(s2)
            res.append(dic1['0']+dic2['1'])
        return max(res)

 

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给你一个由若干 0 和 1 组成的字符串 s ,请你计算并返回将该字符串分割成两个 非空 子字符串(即  子字符串和  子字符串)所能获得的最大得分。

「分割字符串的得分」为  子字符串中 0 的数量加上  子字符串中 1 的数量。

 

示例 1:

输入:s = "011101"
输出:5 
解释:
将字符串 s 划分为两个非空子字符串的可行方案有:
左子字符串 = "0" 且 右子字符串 = "11101",得分 = 1 + 4 = 5 
左子字符串 = "01" 且 右子字符串 = "1101",得分 = 1 + 3 = 4 
左子字符串 = "011" 且 右子字符串 = "101",得分 = 1 + 2 = 3 
左子字符串 = "0111" 且 右子字符串 = "01",得分 = 1 + 1 = 2 
左子字符串 = "01110" 且 右子字符串 = "1",得分 = 2 + 1 = 3

示例 2:

输入:s = "00111"
输出:5
解释:当 左子字符串 = "00" 且 右子字符串 = "111" 时,我们得到最大得分 = 2 + 3 = 5

示例 3:

输入:s = "1111"
输出:3

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