What is sort function?
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What is collections singletonmap?
What is the difference between hashmap and treemap?
Find duplicates in infinite range. Which data structure to be used to give efficient solution?
When is a binary search best applied?
What is collections singletonlist?
How many types of linked list are there?
Program to remove duplicate elements in an array.
What do you know about the big-o notation and can you give some examples with respect to different data structures?
What is a queue in data structure?
Differentiate between collection and collections.
What is the complexity of adding an element to the heap?
Which interfaces are implemented by linkedlist?