Started NeetCode 150 today with a friend. First problem: Contains Duplicate. Solved it with nested loops first, O(n²), worked but slow. That pushed me to actually learn HashSet properly, then refactored to O(n) using one. 149 to go 👀

Excited to share: my team placed 3rd out of 595+ teams at the DSN × BCT LLM Agent Challenge 🏆 We built PulseAgent, an LLM agent for personalised recommendations. Huge thanks to @DSNCU and @BluechipTechNG for putting this together. @thisisperryy @VictorBuildsApp @mightbe_mj