What does arraylist remove return?
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How does a hashtable work?
Explain the most efficient method to reverse a linked list?
Why is sorting necessary?
What is the difference between a push and a pop?
Why sorting is done?
What are the different types of linked list?
What is space complexity of a program?
What are the types of queues?
What is difference between hashmap and hashtable?
What is map data structure?
Is arraylist a collection?
How does a selection sort work?