Have you ever used HashTable and Directory?
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What is meant by ordered and sorted in collections?
What is data in computer science?
Explain binary searching, Fibinocci search.
What is a data structure? What are the types of data structures?
What is bubble sort?
How many passes does bubble sort need?
What is complexity of bubble sort?
Does set allow null values?
Why do we use hashmap?
Why hashtable is faster than arraylist?
Differentiate between hashset and treeset.
What is the best case time complexity of bubble sort?