How do stacks work?
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Define internal nodes?
How do I start preparing for placement?
What is the use of hashtable?
What is the minimum number of queues that can be used to implement a priority queue?
Explain different methods in which you can traverse a tree?
What is the default value of Array?
Why is quicksort better than mergesort?
Why sorting algorithms are important?
Is hashmap keyset ordered?
What is the time complexity of arraylist and linked list?
What is sort function?
Define tree edge?