Why do we need a data structure?
Write a Program for Reverse a linked list.
Name few collections map implementations?
Which interfaces are implemented by hashmap?
What is stable sorting method?
What are the applications of priority queues?
Differentiate between arraylist and linkedlist.
Why is an array homogeneous?
What do you mean by sorting data?
What is a simple graph?
Which sorting algorithm is the slowest?
Can we put null value in hashmap?
What is an expression tree?