1. OOP questions like abstraction, polymorphism with example.
2. Java specific questions like string pool, references and hashmap (hashcode) related questions.
3. Find path between two nodes in BST. (Asked me to write code in my machine)
4. Build trie supporting insert, delete and prefix search feature. (Machine code)
5. Question related to backtracking.
6. Question related to my work, personal projects, my interest.

Question

1. OOP questions like abstraction, polymorphism with example.
2. Java specific questions like string pool, references and hashmap (hashcode) related questions.
3. Find path between two nodes in BST. (Asked me to write code in my machine)
4. Build trie supporting insert, delete and prefix search feature. (Machine code)
5. Question related to backtracking.
6. Question related to my work, personal projects, my interest.

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