What method removes the value from the top of a stack?
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What is complete binary tree and almost complete binary tree?
Explain how is linked list implemented?
What do you mean by structure property in a heap?
What is the default size of arraylist?
What is the maximum size of array?
Differentiate between hashmap and treemap.
What is a treeset?
Explain the difference between hashset and hashmap?
What is the difference between arraylist and linkedlist?
What should be done in the base case for this recursive problem?
Define 2-3 tree?
Describe avl tree or height balanced binary search tree.