What is example of data?
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Define binary tree insertion.
Explain binary tree traversals?
Why sorting is used?
Is hashset a collection?
Define a stack?
Which is better than array and linked list?
How does a hashtable work?
What is binary search tree and explain its time complexity?
What happens if we try to insert duplicate key in hashmap?
Is arraylist faster than array?
Why is hashset not ordered?
Can we make hashmap synchronized?