Most difficult was laying out a radix tree and going through O(n) lookup and space advantages.
Principal Software Engineer Interview Questions
2,049 principal software engineer interview questions shared by candidates
1.All Java and J2ee question, 2.Questions on the previous projects 3.Some Architectural questions on MVP and MVC pattern
1. How does arraylist work internally in java? if you were to implement array list how would you implement. Collections interface implementations and its differences. Whats the difference between set and list interface. Is Hashlist a thread safe or not. 2. Is there time difference in the array list is accessed, if the index is to the begining vs last. 3. How does HashMAp? Deep discussions about that, as well as HashMaps internal implementation details of O(n).
How to find the middle node in linked list.
The person taking interview asked plsql questions.
They asked my previous project architecture, product capabilities and challenges that i faced while working on that company.
How to define an immutable object in Java?
behavioural questions (tell about last job, why Fidelity? what you like dislike about past job, describe your day) java questions thrown in (singleton, interfaces, abstract) java/javascript questions (design patterns, why microservices, abstract classes, === vs == in javascript)
How would you address the performance scaling issues with a platform like Microsoft Teams?
Tell us a time you solved a challenging technical problem
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