Software development process comparison — As the scale of programs increases, whether developing new functions or refactoring, optimizing existing code, etc., automated testing can be used to ensure that the existing functions of the program are not affected (the old behaviours are not changed), and it can also reduce the number of bugs during developing…

Co-author: Eileen Chu In this practice, you will follow the steps below: Add your website files to Git Repo Launch an EC2 Instance through the AWS Console SSH to EC2 Instance & Install a Web Server Install Git on the EC2 Instance Clone a Repo from Git onto the EC2…

It is not just a command for merging branches, it can also manipulate your commits history. — In previous, we discussed how git rebase changes git history to make it clean and tidy. If you haven’t read it yet or want to review it again, please check the link here: Git Rebase — A Powerful Command Brings Your Git Skills To The Next Level (Part I) In…

Part II Coding In Practically — After understanding the difference between multithreading and multiprocessing, if you are no sure about what are these two concepts, check this previous article: Multithreading vs. Multiprocessing in Python Part I Talking In Theory, and now we are going to realize it by python code! Multithreading Implementation and interpretation During the whole examples, we will…

Make your software highly reliable and satisfying quality worth delivering — Software testing is a critical process in software development that ensures the delivery of high-quality, reliable, and bug-free software. To effectively test software systems, we can test software through different levels and various aspects, and each test method has its own goals and techniques. In this article, I will first…

Including Algorithm Introduction And Three Useful Templates — Binary search is an algorithm that speeds up to find a target in an ordered list, its time complexity is O(logN) whilst a normal linear search is O(n). But how does it works? The three main elements we need are a left index, a right index and a middle index, and each time we divided…

Difficulty: Medium, Category: Dynamic Programming 309. Best Time to Buy and Sell Stock with Cooldown Best Time to Buy and Sell Stock with Cooldown - LeetCode Can you solve this real interview question? Best Time to Buy and Sell Stock with Cooldown - You are given an array…leetcode.com Different from the basic Buy And Sell Stock problem, this problem has one more thing that needs to notice: after you sell a stock, you need a day to cool down, which means you cannot buy stock the next day.

Difficulty: Medium; Category: Stack — Finding the Number of Visible Mountains - LeetCode Can you solve this real interview question? Finding the Number of Visible Mountains - Level up your coding skills and…leetcode.com In the description, you could know that for each mountain, every time the position moves one x-axis away from the peak, its height is lower one y-axis. The mountain’s leftmost position will be [peak x- peak y, 0] and its rightmost position will be [peak x + peak y, 0].

Difficulty: Medium; Category: Dynamic Programming — Decode Ways - LeetCode Decode Ways - A message containing letters from A-Z can be encoded into numbers using the following mapping: 'A' -> "1"…leetcode.com After reading the question, it first occurred to me that maybe I need to build a map built from letters and numbers. …