What is two-dimensional array?
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Are sets sorted?
What is heap tree explain with example?
What do you mean by articulation point?
What is dynamic data structure?
Can hashset contain duplicates?
When will you use array over arraylist?
Tell me real world example of polymorphism and encapsulation .
Is hashmap sorted?
Is it possible to insert different type of elements in a stack? How?
What is data structure? Explain.
How to find the duplicate in an array?
Why do we need linked lists?