Python implementations of optimized data structures: an integer stack with O(1) max retrieval and a sorted number container supporting efficient removal, filtering, and deduplication, fully covered by unit tests.

Custom Python implementations of dictionary-like data structures: a basic set-backed dictionary, a sorted dictionary with logarithmic operations, and an LRU cache built on OrderedDict. The project focuses on data structures, complexity guarantees, and full unit test coverage.

Python implementations of Club and Dictionary classes showcasing efficient collection management. The project uses sorted containers for fast range queries, multi-key sorting, and case-insensitive prefix search, with full unit test coverage.