My list of challenging software projects some programmers should try
Unsolicited advice
Posts by Year
2024
10 algebra problems selected from the Romanian Olympiad (Part 2)
A selection of non-trivial algebra problems.
Friday Links, March 2024
A collection of interesting links I’ve discovered in February and March 2024
A surprising matrix problem
A surprising math problem from the Spanish Math Olympiad of 1988
Friday nostalgia: Supaplex
Nostalgia hits
20 algebra problems selected from the Romanian Olympiad (Part 1)
A selection of 20 math problems from the Romanian Math Olympiad (solutions included).
The sinusoidal tetris
A tetris game with a twist
The math exams of my life
A nostalgic math adventure
Looking back at 2023
Wrapping 2023
2023
Crimes of the Future
My thoughts on Cronenberg’s movie
On the moon
A short trip on the Moon and back
Social Media, I Quit
On quitting social media for good.
The so-called magic of the number 37
Debunking a meme
Demystifying bitwise operations, a gentle C tutorial
A beginner-friendly tutorial on bitwise operations in C
2022
Building pathological input for Java HashMaps - hash collisions generator
Hash collision generator targeting the default java hash function
4 integers are enough to write a Snake Game
A snake written in 4 integers
A blog that is a single executable binary
A Binary Blog generator written in C
I’ve promised myself never to use gradle
A short rant about gradle
Hash, displace, and compress: Perfect hashing with Java
An implementation of a perfection hashing algorithm in Java
On implementing Bloom Filters in C
A concise implementation of bloom filters in C
2021
Arbitrary thoughts, Tzimtzum
Non-technical article on Tzimtzum, because I found the topic interesting
Writing a simple 16 bit VM in less than 125 lines of C
Writing a simple VM for LC3 in less than 125 lines of C
A tale of Java Hash Tables
Implementing Open Addressing hash tables in Java and benchmarking them vs. HashMap
Implementing Hash Tables in C
An in-depth explanation on how we can implement hash tables in pure C. The article covers the following topics: hash functions, separate chaninig and open ad...
Writing a Universal Chess Interface (UCI) Client in Java
A step-by-step guide on how to implement an UCI client in Java.
Cars and Police, a Spring Boot streaming application using Kafka and ksqlDB
A ksqlDB proof of concept.
XML to JSON using MapNeat
A short tutorial on how to transform XML to JSON using mapneat.
Hello world, mapneat!
A gentle introduction to the Kotlin mapneat library.
Computing Eigenvalues and Eigenvectors using QR Decomposition
A short tutorial on how to compute Eigenvalues and Eigenvectors using QR Matrix Decomposition. Python code included.
Linear transformations, Eigenvectors and Eigenvalues - an easy explanation
A short mathematical explanatory article on Linear Transformations, Eigenvalues and Eigenvectors.
Writing your own linear algebra matrix library in C
A step-by-step guide on how to implement a matrix library in pure C.
2013
Writing a simple file/folder monitor using the Watch Service API
Writing simple file/folder monitor using the low-level WatchService API (Java NIO)
Recursive folder walks using NIO.2 API
Implement recursive folder walks using the Java standard API.
HR Schema for MySQL and Maria DB
DDL and DML scripts for creating HR Schema in MySQL.
Adding custom annotations to your java beans
On writing your own annotations
2012
Writing a simple file monitor in Java using Commons IO
Monitor file changes using Commons IO
2011
Bash Scripting - Best Practices
A list of bash best practices.
Generate random SQL inserts using pysert
A short tutorial on how to use and configure pysert.
Implementing a generic Priority Queue in C (using heaps)
An article describing how to implement a Priority Queue in C.
Evaluate RPN expressions using Haskell, Scala, and python
RPN Calculator in 3 different programming languages
2010
Insertion Sort Algorithm
The insertion sort algorithm explained and implemented in Java.
Bottom-up Merge Sort (non-recursive)
The merge sort algorithm (non-recursive) explained and implemented in Java.
The merge sort algorithm (implementation in Java)
The merge sort algorithm explained and implemented in Java.
Euclid’s Algorithm: Reducing fraction to lowest terms
The Euclid algorithm explained and implemented in C.
Sieve of Eratosthenes (finding all prime numbers up to a specific integer)
The algorithm of Sieve of Eratosthenes
Serialize java objects using GZip streams (GZIPInputStream and GZIPOutputStream)
An article on how to serialize and deserialize Java Objects using GZIP streams.
Binary GCD (Stein’s Algorithm) in C
The Stein’s algorithm explained and implemented in C.
Euclid’s Algorithm
The Euclid’s algorithm explained and implemented in C.
Converting infix to RPN (shunting-yard algorithm)
The shunting-yard algorithm implemented in Java.
Generic data structures in C
A short tutorial on how to write generic code in C.
Hello world!
Hello world!