What is the difference between hashmap and treemap?
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What is the use of tree data structure?
Can we create a null as a key for a map collection?
List the two important key points of depth first search?
Can hashset contain duplicates?
What is m way tree in data structure?
Which sort show the best average behavior?
Why is the isempty() member method called?
Is array a linked list?
Write an algorithm for inserting and deleting an element from doubly linked list?
When will we get ArrayStoreException?
Write a recursive c function to calculate the height of a binary tree.
Tell me real world example of polymorphism and encapsulation .