题目要求： https://leetcode-cn.com/problems/different-ways-to-add-parentheses/ 思路： 分治法，递归 def diffWaysToCompute(input):# 如果只有数字，直接返回if input.isdigit():return [int(input)]elif not input:return []res = []for i

题目要求： https://leetcode-cn.com/problems/surrounded-regions/ class Solution:def solve(self, board: List[List[str]]) -> None:"""Do not return anything, modify board in-place instead."""# 如果是空数组，直接返回# Lee

题目： python做什么的、Sort a linked list inO(nlogn) time using constant space complexity. python type？代码：oj 测试通过Runtime:372 ms 1 # Definition for singly-linked list. 2 # class ListNode: 3 # def __init__(self, x): 4 # self.val = x