Two Sigma Software Engineer interview questions

Standard medium difficulty hackerrank. The question involved decoded an encoded string. It was not something I had seen on LeetCode before and I think was unique to the company. The question was not that difficult but I ran out of time right before I could finish answering.

online assessment, data structures and algorithms, python or java or c++, time complexity, leetcode or neetcode, asked to design a class involving a particular method of sorting time and financial information