What is the difference between hashset and arraylist?
How to find the duplicate in an array?
Is binary tree a binary search tree?
What is adt and its advantages?
Why is an array homogeneous?
Which sorting algorithms are in place?
What is the use of threaded binary tree?
Define data type and what are the types of data type?
What is data type with example?
Why are b trees used?
Are dictionaries mutable?
No. of possible ordered trees with n nodes ? Please give formula (if any).
In what areas do data structures are applied?