Can we insert null in hashset?
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No. of possible ordered trees with n nodes ? Please give formula (if any).
Does the minimal spanning tree of a graph give the shortest distance between any 2 specified nodes?
What is a data structure node class?
In tree construction which is the suitable efficient data structure?
Can you please explain the difference between string and an array?
What are the four types of variables?
Explain implementation of deletion from a binary tree.
Which algorithm is used in collections sort method?
What is a tech stack?
How do you find the height of a binary tree?
Is Arraylist faster than Array? Why?
Is an arraylist an object?