Explain the internal working of a hash map?
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Why is hashmap used?
Define hash table?
What is data structure and its classification?
What are priority queues?
Given M x N matrix with sorted elements row wise and column wise, find elements?
What is minimum depth of binary tree?
Can we add duplicate keys in a hashmap? What will happen if we attempt to add duplicate values?
Different Types of pattern?
Why insertion is faster in linked list?
Is hashtable fail fast?
Does list allow null values?
What is the height of an empty tree?