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Name: chenyufeng
Type: User
Company: Zhejiang University
Bio: Share with you IT technology, to achieve progress together.
Location: Zhejiang,China
Name: chenyufeng
Type: User
Company: Zhejiang University
Bio: Share with you IT technology, to achieve progress together.
Location: Zhejiang,China
Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would have exactly one solution.
Write a function to find the longest common prefix string amongst an array of strings.
Given a sorted array, remove the duplicates in place such that each element appear only once and return the new length. Do not allocate extra space for another array, you must do this in place with constant memory.
Given an array and a value, remove all instances of that value in place and return the new length. Do not allocate extra space for another array, you must do this in place with constant memory. The order of elements can be changed. It doesn't matter what you leave beyond the new length.
Implement strStr(). Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack.
Given a string, find the length of the longest substring without repeating characters.
Given a sorted array of integers, find the starting and ending position of a given target value. Your algorithm's runtime complexity must be in the order of O(log n). If the target is not found in the array, return [-1, -1].
Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in order.
You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (clockwise).
Given an array of strings, group anagrams together.
Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique longest palindromic substring.
Implement pow(x, n).
Given a string s consists of upper/lower-case alphabets and empty space characters ' ', return the length of last word in the string. If the last word does not exist, return 0.
Given a non-negative number represented as an array of digits, plus one to the number. The digits are stored such that the most significant digit is at the head of the list.
Given two binary strings, return their sum (also a binary string). For example, a = "11" b = "1" Return "100".
Reverse digits of an integer.Example1: x = 123, return 321 Example2: x = -123, return -321
You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top?
Implement atoi to convert a string to an integer.
Given two sorted integer arrays nums1 and nums2, merge nums2 into nums1 as one sorted array. Note: You may assume that nums1 has enough space (size that is greater or equal to m + n) to hold additional elements from nums2. The number of elements initialized in nums1 and nums2 are m and n respectively.
Determine whether an integer is a palindrome. Do this without extra space.
A delightful iOS and OS X networking framework
该项目是基于Face++开发的一款人脸识别App,通过照片可以检测性别和年龄。目前已经上线豌豆荚、搜狗手机助手等多个安卓市场。希望开发者为该项目贡献自己的code力量。This project is an Android app based on Face++ SDK which could detect people face through photos.The app could recognize people's gender and age.At present,the app is sold on Peasecod,Sougou Assistant. I hope developers could contribute your nice code to this app.
Offline Maps API for iOS
优化相机相册第一次授权时的用户体验。
设置iOS开发中的圆形头像,该头像可以调用照相机拍摄,也可以从图库中取出。并最终保存到应用程序沙盒中,下次进入应用可以直接读取该头像。
打印链表中倒数第k个节点。
该项目是基于百度地图SDK开发的一款交通助手App,目前已经上线豌豆荚、魅族应用市场、搜狗手机助手等多个安卓应用市场。希望各位开发者为该项目贡献自己的code力量。This Android App is based on BaiduMap SDK called TrafficAssistant.At present,the app is sold on Peasecod,Meizu App Market,Sougou Assistant. I hope developers could contribute your nice code to this app.
C语言实现二分查找。
C语言实现二叉查找树(二插排序树)的基本操作。
C++实现二叉查找树的基本操作。
A declarative, efficient, and flexible JavaScript library for building user interfaces.
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
The Web framework for perfectionists with deadlines.
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
We are working to build community through open source technology. NB: members must have two-factor auth.
Open source projects and samples from Microsoft.
Google ❤️ Open Source for everyone.
Alibaba Open Source for everyone
Data-Driven Documents codes.
China tencent open source team.