Is collection a class or interface?
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Define dynamic data structures?
Can treemap key null?
What are linked lists good for?
What is the difference between hashmap and arraylist?
What do you mean by breadth first search (bfs)?
What is the use of threaded binary tree?
Is bubble sort faster than selection sort?
Is linked list faster than array?
Define graph traversals?
What is binary search tree and explain its time complexity?
What is mergesort and hashtable?
Differentiate between priorityqueue and treeset.