How does arraylist size work?
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Can you please explain the difference between array_name and &array_name?
How do you create a tree diagram?
Does arraylist guarantee insertion order?
Explain quick sort and merge sort algorithms.
Define 2-3-4 tree?
What is the function of stack?
If we try to add duplicate key to the hashmap, what will happen?
What exactly is a thread?
What is data structure and why we need them?
Write an algorithm to check if there is a loop in a doubly linked list.
What is hashing technique? Describe in brief.
What is an iterative algorithm?