What is the use of treemap?
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Define red-black trees.
What is the difference between Array and Arraylist?
How can you insert a node to the beginning of a singly linked list?
Can a tree be empty?
What is quick sort?
how to add an item to the beginning of the list?
Explain how to find 3rd element from end in a linked list in one pass?
How do you find the second largest element in an array of integers?
How do you sort an array by value?
What is meant by binary tree?
What is meant by hashing?
How does a binary search work?