Advent of Claude In this repo I will have Claude Code solve the Advent of Code problems in Java. 2025 Problem Solution Day 1: Secret Entrance Day01.java - Explanation Day 2: Gift Shop Day02.java - Explanation Day 3: Battery Bank Joltage Day03.java - Explanation Day 4: Printing Department Day04.java - Explanation Day 5: Cafeteria Day05.java - Explanation Day 6: Trash Compactor Day06.java - Explanation Day 7: Laboratories Day07.java - Explanation Day 8: Playground Day08.java - Explanation Day 9: Movie Theater Day09.java - Explanation 2015 Problem Solution Day 1: Not Quite Lisp Day01.java - Explanation Day 2: I Was Told There Would Be No Math Day02.java - Explanation