Data Structure Coding Challenge

I'm looking for a talented coder to solve 8 coding questions for me. The questions revolve around implementing various data structures, using primarily Python and Java. The data structures involved are a mix, including but not limited to arrays, lists, trees, graphs, stacks, and queues.

Ideal Skills:
- Proficient in Python and Java
- Strong understanding of data structures
- Experience in algorithm challenges
- Proven track record in coding problem-solving