Is treeset synchronized?
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How do you balance a tree?
an array of size N in which every number is between 1 and N, determine if there are any duplicates in it. You are allowed to destroy the array if you like. [ I ended up giving about 4 or 5 different solutions for this, each supposedly better than the others ].
What is inplace sorting?
Is complete binary tree?
What is sorted list in data structure?
Does hashmap preserve insertion order?
Which algorithm is used in collections sort method?
What is dynamic array how it is created?
Can arraylist be empty?
What are the standard ways in which a graph can be traversed?
Describe the types of data structures?
What are the Differences between map and hashmap?