What do u mean by data type?
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Which of the collections allows null as the key?
Define non-linear data structures?
What do you know about the big-o notation and can you give some examples with respect to different data structures?
Write an algorithm to find middle element in the linked list.
When will you sort an array of pointers to list elements, rather than sorting the elements themselves?
Does arraylist guarantee insertion order?
How to compare Two Arrays?
Explain what are the types of collision resolution techniques and the methods used in each of the type?
What is a b+ tree? Explain its uses.
What is the difference between collection and collections?
Can you tell me the differences between Array and ArrayList?
How do you balance a tree?