careercup/CtCI-6th-Edition ? reverse-engineered prompt

I want a clean open source repository for Cracking the Coding Interview 6th Edition solutions, with the Java solutions included directly and the other languages linked as separate submodules. Make it easy for someone to clone, browse, and run the code locally, and make the README clear about how to get just Java or everything with submodules.

Please organize the solutions so they are easy to find by chapter and problem, and add whatever basic setup or helper files are needed so the project feels polished and ready for contributions. If there are any missing details about the book structure or best way to lay things out, look up current docs online if you need to. I’d also like the contributing notes to be straightforward, so someone can understand where to send changes for Java versus the other languages.