UB coding leetcode
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Contents
- Problem
- - [✅] Leetcode 14. Longest Common Prefix
- - [‼️] Leetcode 79. Word Search DFS
- - [✅] Leetcode 200. Number of Islands
- - [✅] Leetcode 204. Count Primes
- - [✅] Leetcode 207. Course Schedule
- - [‼️] Leetcode 212. Word Search II Trie + DFS
- - [‼️] Leetcode 214. Shortest Palindrome manacher / KMP
- - [‼️] Leetcode 230. Kth Smallest Element in a BST 中序遍历
- - [✅] Leetcode 239. Sliding Window Maximum 单调队列
- - [✅] Leetcode 253. Meeting Rooms II 时间排序+heap
- - [‼️] Leetcode 269. Alien Dictionary 默写题目
- - [‼️] Leetcode 305. Number of Islands II union find
- - [✅] Leetcode 362. Design Hit Counter queue, follow up每人一个queue或者桶
- - [‼️] Leetcode 365. Water and Jug Problem DFS状态判断环
- - [‼️] Leetcode 380. Insert Delete GetRandom O(1)
- - [‼️] Leetcode 381. Insert Delete GetRandom O(1) - Duplicates allowed 删除的跟队尾交换，删除队尾
- - [✅] Leetcode 399. Evaluate Division 跟汇率一个题目
- - [‼️] Leetcode 410. Split Array Largest Sum 注意二分检查写法
- - [‼️] Leetcode 427. Construct Quad Tree 前缀区域和公式
- - [✅] Leetcode 549. Binary Tree Longest Consecutive Sequence II 二叉树左右返回
- - [‼️] Leetcode 564. Find the Closest Palindrome 默写
- - [✅] Leetcode 588. Design In-Memory File System Trie Tree
- - [‼️] Leetcode 721. Accounts Merge 注意如何建图和保存
- - [‼️] Leetcode 729. My Calendar I 前边的跟end，后边的跟start比
- - [‼️] Leetcode 752. Open the Lock BFS visit在加queue时加
- - [‼️] Leetcode 815. Bus Routes 对公交和route都要去重
- - [‼️] Leetcode 934. Shortest Bridge DFS + BFS / 双向广搜
- - [‼️] Leetcode 977. Squares of a Sorted Array 第K大，二分解法
- - [✅] Leetcode 994. Rotting Oranges
- - [✅] Leetcode 1101. The Earliest Moment When Everyone Become Friends
- - [‼️] Leetcode 1235. Maximum Profit in Job Scheduling DP 二分
- - [‼️] Leetcode 1428. Leftmost Column with at Least a One
- - [‼️] Leetcode 1429. First Unique Number LRU, LinkedHashSet()
- - [✅] Leetcode 1438. Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit monotonic queue
- - [‼️] Leetcode 1475. Final Prices With a Special Discount in a Shop 单调栈
- - [‼️] Leetcode 2163. Minimum Difference in Sums After Removal of Elements two heap
- - [‼️] Leetcode 2258. Escape the Spreading Fire BFS FireTime, BFS human
- - [ ] Leetcode 2468. Split Message Based on Limit
- - [‼️] Leetcode 2571. Minimum Operations to Reduce an Integer to 0 greedy
- - [ ] Leetcode 2791. Count Paths That Can Form a Palindrome in a Tree
- - [ ] Leetcode 2858. Minimum Edge Reversals So Every Node Is Reachable