About

Hi, I'm Charles, the person behind CharlieBoi's Lens on the World.

Learning, one problem at a time

Here, I share LeetCode solutions and explanations, along with quantitative finance interview questions and my approaches to solving them. I want to capture not just the final answer, but the reasoning, insights, and lessons along the way.

After working through so many problems, I wanted a place to keep my thoughts so I could return to them and review what I had learned. I also hope these notes can help others working through similar challenges.

Beyond the problem sets

Outside of studying, I enjoy gaming—especially Genshin Impact and Zenless Zone Zero—traveling, taking road trips, and dancing hip-hop. From time to time, I'll share experiences, observations, and discoveries from my everyday life, too.

Why this space exists

This website is both a record of my learning and a place to share it. If an explanation here helps you understand a tricky problem or see an idea from a different angle, then it has served its purpose.

Thanks for stopping by. I hope you find something useful—or simply something you enjoy.