Can we store null in arraylist?
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A lot of data structures related programs related to only trees and graphs, like the diameter of a tree, removing the loops in a graph etc.
List the two important key points of depth first search?
Give a real time example of stack
How would you reverse characters of an array without using indexing in the array.
what is the primary advantage of a linked list?
How do we search a specific element in an array?
In what scenario, binary search can be used?
What are hash tables good for?
What is structured data with example?
Can we sort hashmap?
Why you need a data structure?
How does shell sort work?