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[CS Fundamentals] Pointers in C

Mar 25 · 5 min read · Introduction In this article, I will be talking about pointers in C. Pointers might be a bit hard concept for beginners, but they are essential to understand what your programs are doing. Moreover, th

[SQL] Writing Efficient SQL Queries

Jun 30, 2025 · 4 min read · Think of yourself building a program. It can be any types, such as website, app, etc. These applications may require database to show the data that the user requested. For example, you can think of a table that stores GPS-related data. The longitude ...

[CS Fundamentals] Binary Search

May 19, 2025 · 3 min read · Idea Binary Search is a powerful algorithm to search for a certain value. If you were to find 3 in an array = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9], how are you going to come up with the index of 3? The first method that pops up in your head would be lookin...

[CS Fundamentals] Sorting Algorithms

May 12, 2025 · 4 min read · Selection Sort Selection sort is the simplest way to sort an array. Pretend that index 0 is the smallest, and we look at each element. We select the smallest element from other index and swap the two elements. array = [5, 7, 9, 0, 3, 1, 6, 2, 4, 8] ...

[CS Fundamentals] DFS and BFS

May 11, 2025 · 3 min read · In this article, I will introduce the basic concept of Depth-First Search(DFS) and Breadth-First Search(BFS). Both focuses searching, but the difference is the way of doing it. DFS To understand DFS, you need to know stack and recursive function. I ...