原创 Reverse Linked List LeetCode206
Reverse Linked List Total Accepted: 5847 Total Submissions: 16863 Reverse a singly linked list. click to show mo
2020-06-14 10:52:00
1
原创 棧的經典問題：括號配對
You are given a string consisting of parentheses() and[]. A string of this type is said to becorrect: (a)if it is the
2020-06-14 10:52:00
原创 字符串查找算法kmp
給定一個文本串s，和一個匹配串p，要求查找p第一次在s中出現的位置。 常見的方法如暴力搜素，逐個匹配s[i],p[j],若匹配，下標後移。不匹配，i回溯到這次匹配前的下一位置，j置爲0，重新匹配。最壞情況，時間複雜度O（n*m）。
2020-02-25 09:04:02
原创 HDOJ-1002大數相加
參考這篇：點擊打開鏈接 Problem Description I have a very simple problem for you. Given two integers A and B, your job is to calc
2020-02-25 09:04:02
原创 Lowest Common Ancestor of a Binary Search Tree leetcode235
Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST. According to the
2018-08-30 21:00:57
3
原创 Isomorphic Strings leetcode 205
Given two strings s and t, determine if they are isomorphic. Two strings are isomorphic if the characters in s can be r
2018-08-30 21:00:56
2
原创 Simplify Path Leetcode71
Given an absolute path for a file (Unix-style), simplify it. For example, path = “/home/”, => “/home” path = “/a/./b/
2018-08-30 21:00:56
3
原创 Lowest Common Ancestor of a Binary Tree leetcode236
Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree. According to the definition
2018-08-30 21:00:56
1
原创 Multiply Strings leetcode 43
Given two numbers represented as strings, return multiplication of the numbers as a string. Note: The numbers can be ar
2018-08-30 21:00:56
原创 Distinct Subsequences leetcode 115
Given a string S and a string T, count the number of distinct subsequences of T in S. A subsequence of a string is a ne
2018-08-30 21:00:56
3
原创 Palindrome Linked List leetcode 234
Given a singly linked list, determine if it is a palindrome. Follow up: Could you do it in O(n) time and O(1) space? 判
2018-08-30 21:00:56
原创 Edit Distance Leetcode 72
Given two words word1 and word2, find the minimum number of steps required to convert word1 to word2. (each operation i
2018-08-30 21:00:56
原创 Longest Common Prefix leetcode 14
Write a function to find the longest common prefix string amongst an array of strings. 找所有字符串的公共前綴，簡單地實現題 class Soluti
2018-08-30 21:00:56
3
原创 Clone Graph Leetcode 133
Clone an undirected graph. Each node in the graph contains a label and a list of its neighbors. OJ’s undirected graph s
2018-08-30 21:00:56
原创 ZigZag Conversion leetcode6
The string “PAYPALISHIRING” is written in a zigzag pattern on a given number of rows like this: (you may want to displa
2018-08-30 21:00:56