split(":") return 60 * int(h) + int(m) cache = defaultdict(list) for name, time in zip(keyName, keyTime): cache[name].append(str2time(time)) ans = [] for name, timelist in cache.items(): n = len(timelist) timelist = sorted(timelist) for i in range(n-2): if time...
LeetCode笔记:Weekly Contest 264 1. 题目一 1. 解题思路 2. 代码实现 2. 题目二 1. 解题思路 2. 代码实现 3. 题目三 1. 解题思路 2. 代码实现 4. 题目四 1. 解题思路 2. 代码实现 1. 题目一 给出题目一的试题链接如下: 2047. Number of Valid Words in a Sentence 1. 解题思路 这一...
(注意c,d数字可能大于9,所以要用while进行判断,WA了一次,b初始化为1,因为0不能做分母,0与任何数的最大公约数就是这个数,最小公倍数 = x*y/最大公约数) View Code: (总结:思路比较清晰,就是写起来还得注意细节方面,WA了好几次,特例特判还是得多做题啊,加油!) 34: 链接:https://leetcode.com/cont...
Given anm x nmatrix of non-negative integers representing the height of each unit cell in a continent, the "Pacific ocean" touches the left and top edges of the matrix and the "Atlantic ocean" touches the right and bottom edges. Water can only flow in four directions (up, down, left, ...
个人观点，受过ACM训练，有着Regional争金能力的个人，面对这个weekly contest，真的是没啥难点可言，30...
https://leetcode.cn/contest/weekly-contest-397/problems/permutation-difference-between-two-strings/ 题意 直接模拟 思路 直接模拟即可,每个字符的索引进行相减即可。 复杂度分析: 时间复杂度:$O(n)$。 空间复杂度:$O(1)$。 代码 class Solution: ...
Welcome toBiweekly Contest 43! Feel free to share and post your contest experience here! You can also view the rankings for the contesthere. Links to the individual problems are included below: Calculate Money in Leetcode Bank(3 points) ...
LeetCode Biweekly Contest 12 1p 赛后讲解 睡过了没有实况指挥部:A 题模拟:00:18B 题使用map维护id,score对,使用multiset维护score,或者使用线段树平衡树维护score:05:50C 题找任一点a距离最远的点b找b最远点c,bc路径即为树的直径,或使用树形dp:19:23D 题区间dp,
length || inStart > inEnd) return null; // 当前根节点 TreeNode root = new TreeNode(preorder[preStart]); // 中序遍历中找到当前的 根节点,划分左右区域(为了加速可以使用 HashMap,O(1)时间找到inIndex) int inIndex = 0; for (int i = inStart; i <= inEnd; i++) { if (inorder[i...
RegisterorSign in Premium🏆 Biweekly Contest 35 LeetCode 2811 Sep 20, 2020 OfficialContest Welcome to Biweekly Contest 35! Feel free to share and post your contest experience here! You can also view the rankings for the contest here. Links to the individual problems are included below: Sum...