What is stack and queue in data structure?
Why do we use linked lists?
What happens if we try to insert duplicate key in hashmap?
What is the difference between list, set and map?
Draw a binary Tree for the expression : A * B - (C + D) * (P / Q)
How does a dynamic array work?
Can a hashset contain duplicates?
If I try to add enum constants to a treeset, what sorting order will it use?
Is array a data structure?
What is the difference between Array and Arraylist?
Which type of sorting is best?
Define 2-3 tree?
Define an algorithm. What are the types of algorithms?