leetcode-241-为运算表达式设置优先级*

题目描述：

 

 方法：分治*

class Solution:
    def diffWaysToCompute(self, input: str) -> List[int]:
        if input.isdigit():
            return [int(input)]
        tem = []
        for k in range(len(input)):
            if input[k] == '+':
                tem.extend([i + j for i in self.diffWaysToCompute(input[:k]) for j in self.diffWaysToCompute(input[k + 1:])])
            elif input[k] == '-':
                tem.extend([i - j for i in self.diffWaysToCompute(input[:k]) for j in self.diffWaysToCompute(input[k + 1:])])
            elif input[k] == '*':
                tem.extend([i * j for i in self.diffWaysToCompute(input[:k]) for j in self.diffWaysToCompute(input[k + 1:])])
        return tem