Can we insert null in hashset?
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Is duplicate allowed in hashmap?
How do stacks work?
What do you mean by quadratic probing?
How many types of data structure are there?
Is array part of collection framework?
Which are the sorted collections?
Can we override compareto method for enumerations?
Which sorting algorithm is worst?
How do you clear a stack?
There are 2 int type array data type. One is containing 50 elements, and another one is containing 30 elements. Can we assign the array of 50 elements to an array of 30 elements?
What do you know about traversal in linked lists?
Can you provide some implementation of a dictionary having large number of words?