Is hashmap an object?
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What is dequeue operation?
What is the use of tree data structure?
Given an array of integers, devise a program to replace every element with the next greatest element on the right side in the array. Also, replace the last element with 5 as there no element on the right side of it.
List the types of rotations available in splay tree?
How would you swap the Kth node from beginning with Kth node from end in a Linked List.
Differentiate between the singly linked list and doubly linked list.
How do you sort elements in an arraylist?
Does list maintain insertion order?
How many types of priority queue are there?
Mention some drawbacks of the linked list.
What is structure of data type?
Are linked lists considered linear or non-linear data structure?