Amazon Software Development Engineer (SDE I) interview questions

After passing the Online assessment, One phone interview round was scheduled with a senior SDE from the team, followed by final loop scheduled about 2 weeks later. The interview loop consisted of three rounds. 1st was the bar raiser with 3 behavioral questions, 2nd was technical round, where I was asked 2 LC questions easy-medium level, 3rd round was Technical + LP, where I was asked 2 behavioral questions and 1 LC easy problem.

OA evaluation The platform was Hackeerank, and the question was Designing Complier type (Leetcode Medium). I have solved first question and then for second question got the intution but due to limited time not able to solve