Explain Queue
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What is unmodifiable list?
What is complete binary tree and almost complete binary tree?
What will you prefer for traversing through a list of elements between singly and doubly linked lists?
Define primary clustering?
Which of the collections allows null as the key?
Write an algorithm to check if there is a loop in a doubly linked list.
What is the complexity of selection sort?
What is the default size of arraylist?
If you do not initialize an array what will happen?
Is treemap synchronized?
There is a program which inserts and deletes node in a sorted singly linked list. There is a bug in one of the modules, how would you debug it?
What is entryset method in map?