原创 Leetcode 3. Longest Substring Without Repeating Characters
Given a string, find the length of the longest substring without repeating characters. Example 1: Input: “abcabcbb”
2020-02-21 20:18:33
原创 Leetcode 208. Implement Trie (Prefix Tree)
Implement a trie with insert, search, and startsWith methods. Example: Trie trie = new Trie(); trie.insert(“apple”)
2020-02-21 20:18:33
原创 Leetcode backtracking Top interview Question 7道題總結
本篇文章是對leetcode tree和Top Interview Questions標籤下7道backtracking類型題目的總結 Leetcode 46. Permuation 求一個數組的排列，不斷加入新的元素遞歸，遞歸結
2020-02-21 20:18:33
原创 Leetcode 212. Word Search II
Given a 2D board and a list of words from the dictionary, find all words in the board. Each word must be constructe
2020-02-21 20:18:33
原创 Leetcode tree Top Interview Questions 12道題總結
本篇文章是對leetcode tree和Top Interview Questions標籤下12道tree類型題目的總結 Leetcode 104. Maximum Depth of Binary Tree 此題需要求一顆二叉樹的
2020-02-21 20:18:33
原创 Leetcode 329. Longest Increasing Path in a Matrix
Given an integer matrix, find the length of the longest increasing path. From each cell, you can either move to fou
2020-02-21 20:18:33
原创 Leetcode 230. Kth Smallest Element in a BST
Given a binary search tree, write a function kthSmallest to find the kth smallest element in it. Note: You may assu
2020-02-21 20:18:33
原创 Leetcode 94. Binary Tree Inorder Traversal +
本篇主要記錄兩個算法代碼 中序非遞歸算法 class Solution { public: vector<int> inorderTraversal(TreeNode* root) { vector<int
2020-02-21 20:18:32
原创 leetcode weekly test 146
5130. Number of Equivalent Domino Pairs Given a list of dominoes, dominoes[i] = [a, b] is equivalent to dominoes[j]
2019-07-30 21:25:21
1
原创 leetcode 42. Trapping Rain Water
Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much wate
2019-07-16 19:38:31
原创 leetcode 41. First Missing Positive
Given an unsorted integer array, find the smallest missing positive integer. Example 1: Input: [1,2,0] Output: 3 Ex
2019-07-16 19:38:31
原创 前綴樹
https://www.cnblogs.com/luosongchao/p/3239521.html https://blog.csdn.net/u013949069/article/details/78056102 開個坑，之後
2019-07-09 21:29:41
原创 leetcode Weekly Contest 144
rank:1313 / 3582 pass: 3/4 1108. Defanging an IP Address Given a valid (IPv4) IP address, return a defanged version
2019-07-07 20:38:31
原创 leetcode 15. 3Sum
Given an array nums of n integers, are there elements a, b, c in nums such that a + b + c = 0? Find all unique trip
2019-06-22 20:23:38