Tech Round:

• Resume discussion
• Internal Implementation of HashMap
• Discussion on new features of Java 11
• Project Overview and Microservices Architecture Overview
• Producer and Consumer Problem
• Coding problem :
  Given a word, find the first letter which is occuring only once, in one pass with least space.
  ans: start iterating from back and store result in a set, removing and adding as we find.

Tech Architect Round:

1. Basic resume walkthrough
2. Dynamic Programming question
   Given a matrix of 1s and 0s, find the size of the largest matrix possible connecting all 1s in all directions
   Classic DP program with recursion.Key is find overlapping solution.
3. System Design question: Design a Parking lot.
   • Think of abstract classes.
   • Think of least time of alloting parking
   • Think of how to manage vehicle types.
   • Think of. a multi floor parking model

Principal Architect Round:

1. Resume Discussion
2. Project In-depth analysis
3. Soft skills interview
4. Find the closest numbers in an array.
5. Given sum, find 2 numbers in array matching sum
6. Given sum, find 3 numbers in array matching sum
7. Given sum, find 4 numbers.. basically asking question on how my approach changes.
   What space complexity I choose and why a specific data structure.
8. Asked if comforable with varied stack.