- Java Conditional Statements
What Are Conditional Statements? Conditional statements are the decision-making backbone of every Java program. They allow your code to evaluate a condition and execute different blocks of code depending on whether that condition is true or false. Think of it like real life. You wake up and check…
- Python Advanced – Machine Learning
Introduction to Machine Learning Machine learning is a branch of artificial intelligence where systems learn patterns from data and make decisions without being explicitly programmed for every scenario. Instead of writing rules by hand, you feed data into an algorithm, and it figures out the rules…
- Regex
What is Regex? Regex (short for Regular Expression) is a sequence of characters that defines a search pattern. Think of it as a mini-language specifically designed for matching, searching, extracting, and replacing text. Here is a real-world analogy: imagine you are in a library looking for books.…
- Chat System
A chat app performs different functions for different people. It is extremely important to nail down the exact requirements. For example, you do not want to design a system that focuses on group chat when the interviewer has one-on-one chat in mind. It is important to explore the feature…
- Unique ID Generator
In this chapter, you are asked to design a unique ID generator for a distributed system. Your first thought might be to use a primary key with the auto_increment attribute in a traditional database. However, auto_increment does not work in a distributed environment because a single database server…