Why do we use hashmap?
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What is difference between list and set?
Why is sorting important?
How does quick sort work?
What are the complexity of binary search?
How does arraylist size work?
How is heap sort implemented?
How many links are there in a binary tree of N nodes?
Is arraylist a collection?
Explain the implementation of an AVL tree and Binary tree.
Which is better bubble sort or selection sort?
What is a bubble sort and how do you perform it?
Which sorting method is slowest?