杨领well

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全部文章（共268篇）

LeetCode: 192. Word Frequency

LeetCode: 192. Word Frequency 题目描述 Write a bash script to calculate the frequency of each word in a text file words.txt. For simplicity sake, you m...

2018-09-01

0 491

LeetCode: 199. Binary Tree Right Side View

LeetCode: 199. Binary Tree Right Side View 题目描述 Given a binary tree, imagine yourself standing on the right side of it, return the values of the nod...

2018-08-31

0 451

LeetCode: 191. Number of 1 Bits

LeetCode: 191. Number of 1 Bits 题目描述 Write a function that takes an unsigned integer and returns the number of '1' bits it has (also known as the Ha...

2018-08-30

0 439

LeetCode: 190. Reverse Bits

LeetCode: 190. Reverse Bits 题目描述 Reverse bits of a given 32 bits unsigned integer. Example: Input: 43261596 Output: 964176192 Explanation: 4326159...

2018-08-29

0 536

LeetCode: 189. Rotate Array

LeetCode: 189. Rotate Array 题目描述 Given an array, rotate the array to the right by k steps, where k is non-negative. Example 1: Input: [1,2,3,4,5,6...

2018-08-28

0 490

LeetCode: 188. Best Time to Buy and Sell Stock IV

LeetCode: 188. Best Time to Buy and Sell Stock IV 题目描述 Say you have an array for which the ith element is the price of a given stock on day i. Desi...

2018-08-27

0 382

TCP/IP协议(4): 地址解析协议(ARP) —— 网络地址转换为物理地址的方式

TCP/IP协议(4): 地址解析协议(ARP)——网络地址转换为物理地址的方式关于地址解析协议(Address Resolution Protocol, ARP) 关于 ARP 地址解析协议(Address Resolution Protocol, ARP) 协议是用于根据给定网络层...

2018-08-26

0 597

LeetCode: 895. Maximum Frequency Stack

LeetCode: 895. Maximum Frequency Stack 题目描述 Implement FreqStack, a class which simulates the operation of a stack-like data structure. FreqStack ha...

2018-08-26

0 431

LeetCode: 894. All Possible Full Binary Trees

LeetCode: 894. All Possible Full Binary Trees 题目描述 A full binary tree is a binary tree where each node has exactly 0 or 2 children. Return a list o...

2018-08-26

0 410

LeetCode: 893. Groups of Special-Equivalent Strings

LeetCode: 893. Groups of Special-Equivalent Strings 题目描述 You are given an array A of strings. Two strings S and T are special-equivalent if after a...

2018-08-26

0 407