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Building a scalable data pipeline with Pandas and Apache Arrow

Every data engineer eventually meets the same wall: the notebook that ran fine on a 200-megabyte CSV now crawls when the file grows to 20 gigabytes. The cause…

How to Solve the Subset Sum Problem with Backtracking

The subset sum problem asks whether a collection of numbers contains a subset whose values add up to a specified target. For example, given [3, 7, 10, 12] and…

Understanding the bias-variance trade-off in machine learning

A machine learning model is useful when it learns patterns that remain reliable on data it has never seen. A model that performs brilliantly on its training…

Implementing a circular linked list in C for round-robin scheduling

Round-robin scheduling is one of the oldest and most intuitive ways to share a processor among several tasks. It is the algorithm that quietly powers the…

Prim's Algorithm Explained for Building Minimum Spanning Trees

Graphs sit behind countless systems we touch every day. A road map from Sydney to Perth, a fibre ring between data centres in Melbourne and Adelaide, or the…

Using Python's multiprocessing module for CPU-bound parallelism

Python developers in Sydney's fintech sector and Brisbane's growing AI startups often hit the same wall: a script that runs perfectly on a 1,000-row sample…

Kruskal's Algorithm and the Minimum Spanning Tree Explained

For anyone who has tried to wire up a network of sensors across a sprawling wheat station outside Perth, or to lay fibre along the rail corridors between…

Implementing a Merkle Tree for Data Integrity

A Merkle tree is a data structure that summarises a collection of records with a single cryptographic root hash. Each leaf represents a data item, while every…

Bucket sort for uniformly distributed data

Bucket sort is a distribution-based sorting algorithm designed for values spread reasonably evenly across a known interval. Instead of comparing every pair of…

Tackling the coin change problem with greedy and dynamic programming

Imagine standing at the register at a Melbourne cafe with a $4.50 tab, holding out a $5 note and wondering how many 20-cent coins the cashier should hand back.…