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1.
What is a Hash Table?
Answer:
Basic Hash Table Concepts
- 2.
What is Hashing?
Answer: - 3.
Explain the difference between Hashing and Hash Tables.
Answer: - 4.
Provide a simple example of a Hash Function.
Answer: - 5.
How do hash tables work under the hood, specifically in languages like Java, Python, and C++?
Answer:
Hash Functions and Collisions
- 6.
What are Hash Collisions?
Answer: - 7.
Name some Collision Handling Techniques.
Answer: - 8.
Describe the characteristics of a good hash function.
Answer: - 9.
What is Separate Chaining, and how does it handle collisions?
Answer: - 10.
Explain Open Addressing and its different probing techniques.
Answer:
Complexity and Performance
- 11.
Explain the Time and Space Complexity of a Hash Table.
Answer: - 12.
What is a Load Factor in the context of Hash Tables?
Answer: - 13.
How does the load factor affect performance in a hash table?
Answer: - 14.
Discuss different ways to resize a hash table. What is the complexity involved?
Answer: - 15.
How can the choice of a hash function impact the efficiency of a hash table?
Answer:
Cryptographic Hashing
- 16.
What is the difference between a Hash Function and a Cryptographic Hash Function?
Answer: - 17.
What is the role of a Salt in Cryptographic Hashing?
Answer: - 18.
Explain Types of Resistance in Cryptographic Hash Functions.
Answer: - 19.
What is MD5?
Answer: - 20.
What vulnerabilities exist in Hashing Algorithms like MD5 and SHA1?
Answer:
Hash Table Usage and Applications
- 21.
Detect if a List is Cyclic using a Hash Table.
Answer: - 22.
Remove Duplicates from an Unsorted Linked List using a hash table.
Answer: - 23.
Find Common Elements in two given Linked Lists and return them as a new Linked List using a hash table.
Answer: - 24.
Pair socks from a pile using a Hash Table.
Answer: - 25.
How can hash tables be used in caching implementations? Describe a typical use case.
Answer: - 26.
Write an algorithm using a hash table to check if two strings are anagrams of each other.
Answer: - 27.
Implement Autocomplete functionality using Hash Tables.
Answer: - 28.
Describe how a hash table can be used in the implementation of a CDN.
Answer:
Hash Table Structures and Variants
- 29.
What is the difference between HashMaps and HashTables in context of Java’s data structures?
Answer: - 30.
Explain Cuckoo Hashing and when it is advantageous to use.
Answer: - 31.
What are Skip Lists and how do they compare to hash tables?
Answer: - 32.
Discuss the concept of a Dynamic Perfect Hash Table.
Answer: - 33.
In what scenarios would you use a Bloom Filter, and how does it relate to hash tables?
Answer:
Advanced Hash Table Questions
- 34.
What is the Pigeonhole Principle and how does it relate to hashing?
Answer: - 35.
What are the advantages of Tries over Hash Tables?
Answer: - 36.
Explain Robin Hood Hashing and its impact on performance and collision resolution.
Answer: - 37.
What is Linear Hashing and how can it be used to handle growing datasets?
Answer: - 38.
How are hash tables applied in distributed systems, for example, in consistent hashing algorithms?
Answer: - 39.
Describe a situation where you would use a hash table over a binary search tree, and why.
Answer:
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