Does treemap allow null keys?
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State the difference between persistent and ephemeral data structure?
Define level of the tree?
Which sorting algorithm is used in arrays sort?
What is the difference between push and pop?
How do you sort an array in decreasing order?
What is a class user?
What is minimum depth of binary tree?
What's the difference between a hashtable and a hashmap?
What is a b+ tree? Explain its uses.
Explain about map and their types?
In the given binary tree, using array you can store the node 4 at which location? 1 2 3 - - 4 - - 5
Does hashmap maintain insertion order?