Foundations of Data Structures and Algorithms MCQs

Topic-wise practice questions for Data Structures & Algorithms. Test your knowledge, check solutions on demand, and pace your preparation.

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Q11hard
How many pointers are updated when inserting a node into the middle of a Singly Linked List?
Q12hard
What is the time complexity of Heapify (converting an array into a heap)?
Q13easy
Which structure uses the FIFO (First-In-First-Out) principle?
Q14easy
What is Rehashing?
Q15medium
An OS needs to manage a list of processes waiting for the CPU in order of arrival. Which structure is standard?
Q16medium
Which of the following is a "Cryptographic" hash function requirement, but NOT necessarily required for a standard Hash Table?
Q17medium
A system needs to handle a Load Factor of 2.0. Which collision resolution strategy is the only one that can handle this?
Q18medium
Trace a Binary Search for target = 7 in the array [1, 3, 5, 7, 9, 11, 13]. What is the value of the mid index in the first iteration (using 0-based indexing)?
Q19medium
Which structure would be best to model a "Social Network" where users can have many friends and those friends can also be friends with each other?
Q20medium
Which characteristic fundamentally distinguishes a Non-Linear data structure from a Linear one?