What's the difference between a hashtable and a hashmap?
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How do we find duplicate elements in an array?
Which time complexity is best?
What is structure of data type?
which notations are used in evaluation of arithmetic expressions using prefix and postfix forms?
How does the size of arraylist increases dynamically?
What is meant by deque?
Define b-tree of order m?
What is difference between an Array and ArrayList?
What is the difference between the hash table and hash map?
Explain the most efficient method to reverse a linked list?
Define terminal nodes in a tree?
Do you know how to find if linked list has loop?