杨领well

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LeetCode: 210. Course Schedule II

LeetCode: 210. Course Schedule II 题目描述 There are a total of n courses you have to take, labeled from 0 to n-1. Some courses may have prerequisites,...

2018-09-25

0 558

LeetCode: 209. Minimum Size Subarray Sum

LeetCode: 209. Minimum Size Subarray Sum 题目描述 Given an array of ``n positive integers and a positive integer s, find the minimal length of a contigu...

2018-09-24

0 535

LeetCode: 208. Implement Trie (Prefix Tree)

LeetCode: 208. Implement Trie (Prefix Tree) 题目描述 Implement a trie with insert, search, and startsWith methods. Example: Trie trie = new Trie(); t...

2018-09-23

0 405

LeetCode: 207. Course Schedule

LeetCode: 207. Course Schedule 题目描述 There are a total of n courses you have to take, labeled from 0 to n-1. Some courses may have prerequisites, fo...

2018-09-20

0 452

LeetCode: 205. Isomorphic Strings

LeetCode: 205. Isomorphic Strings 题目描述 Given two strings s and t, determine if they are isomorphic. Two strings are isomorphic if the characters in...

2018-09-19

0 463

LeetCode: 204. Count Primes

LeetCode: 204. Count Primes 题目描述 Count the number of prime numbers less than a non-negative number, n. Example: Input: 10 Output: 4 Explanation: T...

2018-09-18

0 428

LeetCode：904. Fruit Into Baskets

LeetCode：904. Fruit Into Baskets 题目描述 In a row of trees, the i-th tree produces fruit with type tree[i]. You start at any tree of your choice, then...

2018-09-17

0 467

LeetCode: 905. Sort Array By Parity

LeetCode: 905. Sort Array By Parity 题目描述 Given an array A of non-negative integers, return an array consisting of all the even elements of A, follow...

2018-09-17

0 466

LeetCode: 203. Remove Linked List Elements

LeetCode: 203. Remove Linked List Elements 题目描述 Remove all elements from a linked list of integers that have value val. Example: Input: 1->2-&...

2018-09-14

0 462

TCP/IP协议(6): DHCP(Dynamic Host Configuration Protocol) 协议 —— 网络地址的分配方式

TCP/IP协议(6): DHCP(Dynamic Host Configuration Protocol) 协议 —— 网络地址的分配方式关于 DHCP(DHCP, Dynamic Host Configuration Protocol) 协议我们知道 IP 协议需要参与通信的网络设备接口...

2018-09-13

0 813