#Definition for a binary tree node.#class TreeNode(object):#def __init__(self, x):#self.val = x#self.left = None#self.right = NoneclassSolution(object):defmaxDepth(self, root):""":type root: TreeNode :rtype: int"""returnself.search(root, 0)defsearch(self, node, i):ifnodeis...
对应的 Java 仓库的地址,传送门:https://github.com/liweiwei1419/LeetCode-Solution-Java 说明:现在刷题,尤其是写题解,绝大多数问题都会写两个语言的代码,Java 是我的母语,Python 是我的新欢。 发布在 LeetCode 中文版上的题解配图使用的 PPT,传送门:https://github.com/liweiwei1419/LeetCode-Solution-PPT...
2.给自己计时。练习某一类型的题目时，一开始给自己定1小时时间，解不出来就去看Solution，一开始即使...
所以, 力扣中 Easy 和 Medium 相当于面试中的常规题，而 Hard 则相当于面试中较难的题，解出一道 H...
min(max(self.dp(k-1, i-1), self.dp(k, n-i))。 classSolution:defsuperEggDrop(self, K: int, N: int) ->int: self.memo={}returnself.dp(K, N)defdp(self, K, N):if(K, N)inself.memo:returnself.memo[(K, N)]ifK == 1:returnNifN == 0:return0 ...
有人做的比java慢，我猜原因可能是有些函数在python执行时候是以c的速度执行的（python学习手册上说的...
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Tags: LeetCode, Python, Programming, Solution, Hard, Algorithm Slug: leetcode-765 Author: ouankou LeetCode 第772题 Basic Calculator III 简要分析及Python代码 题目: Implement a basic calculator to evaluate a simple expression string. The expression string may contain open and closing parentheses , ...
from collectionsimportdefaultdictclassSolution:defmaxPoints(self,points):""":type points:List[Point]:rtype:int""" slopes,result=defaultdict(int),0fori,point1inenumerate(points):slopes.clear()duplicate=1for_,point2inenumerate(points[i+1:]):ifpoint1.x==point2.x and point1.y==point2.y:dup...
Hard 123 股票买卖允许2次,见“系列题目总结” class Solution { public: int maxProfit(vector<int>& prices) { int dp10 = 0, dp11 = -INT_MAX; //left 2 times to buy int dp20 = 0, dp21 = -INT_MAX; //left 1 time to buy