Which collection type is used to maintain uniqueness of data structure?
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Differentiate between arraylist and vector.
Does treeset remove duplicates?
An array having 100 elements have numbers from 1 to 99 randomly out of which any number is repeated. Find the repeated number in minimum time and space complexity.
What is binary tree used for?
What is the difference between Strings and Arrays?
How many pointers are necessary to implement a simple linked list?
Which is faster binary or linear search?
What is a Queue? Explain its operation with example?
How do we find duplicate elements in an array?
Which sorting is best and why?
How would you sort a linked list?
Write the stack overflow condition.