What is the difference between null and void pointer in data structures?
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When would you use a hashmap?
What is the difference between collection and collections?
Explain the Complete structure of hashmap along with the basic coding of the hashmap internal implementation.
What is treemap chart?
What method is used to place a value onto the top of a stack?
Can you change size of array once created?
Define a binary tree?
Differentiate between queue and stack.
What are the types of collision resolution strategies in open addressing?
What is bubble insertion selection sort?
What is meant by binary tree?
What is internal and external sorting?