What is the difference between Array and Arraylist?
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Give one example of right rotation.
Can treemap have null values?
Why do we use insertion sort?
What is a hash in programming?
What are the types of map?
Sorting is not possible by using which of the following methods? (a) Insertion (b) Selection (c) Exchange (d) Deletion
Differentiate between hashset and hashmap.
What are the categories of avl rotations?
What are the 3 types of variables?
What is the most used data structure?
How do you sort a collection in descending order?
Define right-in threaded tree?