Is map a collection?
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Why do we need sorting algorithms?
Is hashmap part of collection?
Which sort is best for linked list?
What is the order of selection sort?
Differentiate between queue and stack.
Why do we use hashmap?
What are the two traversal strategies used in traversing a graph?
What are the different types of data type?
What are common data structures?
Given an unsorted linked list, and without using a temporary buffer, write a method that will delete any duplicates from the linked list?
Why do we use data structures?
What is dangling pointer and how to avoid it?