devn913/leetcode — reverse-engineered prompt

Build me a Java practice repository for coding interview prep, basically a big organized collection of solved LeetCode style problems. I want each problem in its own folder named with the problem number and title, and inside it should have the Java solution in the normal format LeetCode accepts. Cover common topics like arrays, strings, linked lists, binary trees, graphs, stacks, queues, recursion, dynamic programming, greedy, binary search, math, bits, and SQL if the problem is SQL.

Make the README feel like a useful home page for someone studying. It should say this is a collection of LeetCode questions to ace coding interviews, link to my LeetCode profile, and include topic sections that list the solved problems with links to their folders. Keep it simple, clean, and easy to browse so I can use it as my public GitHub portfolio for interview prep.