Why are b trees used?
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what is binary tree?
What are skew trees? For a tree with 4 nodes draw all possible binary? Generalize for n nodes how many binary trees can be drawn?
Does treemap allow null keys?
Is hashset synchronized?
what are the applications of Linked Lists?
Mention the data structures which are used in graph implementation.
which is the simplest file structure? (Sequential, indexed, random)
Is it possible to increase size of array?
What is a hashset?
Write a Binary Search program
Is set sorted?
Why is arraylist used?