Sign in to unlock

Get unlimited access to all questions and answers

checked

Get lifetime access

checked

Track progress

checked

Save time

đź‘‹

Hi! Please sign in to edit.

You will receive an email notification when your contribution is accepted.

The fastest way to prepare
for a tech interview

Check our curated list of full-stack, data structures & software architecture interview questions and answers for developers

* If it's yours original answer, you can add a link to your social media account or personal website.
Hash Tables interview questions

Hash Tables interview questions.

Only challenges
Topic progress: 0%
  • 1.

    What is Hash Table?

    premium question
    completed

    Answer:

  • 2.

    What is the space complexity of a Hash Table?

    premium question
    completed

    Answer:

  • 3.

    Explain what is Hash Value?

    premium question
    completed

    Answer:

  • 4.

    Define what is a Hash Function?

    premium question
    completed

    Answer:

  • 5.

    What is Hashing?

    premium question
    completed

    Answer:

  • 6.

    What is the difference between Hashing and Hash Tables?

    premium question
    completed

    Answer:

  • 7.

    Provide a simple example of Hash Function

    premium question
    completed

    Answer:

  • 8.

    Detect if a List is Cyclic using Hash Table

    premium question
    completed

    Answer:

  • 9.

    What does "bucket entries" mean in the context of a hashtable?

    premium question
    completed

    Answer:

  • 10.

    Explain in simple terms how Hash Tables are implemented?

    premium question
    completed

    Answer:

  • 11.

    What is the significance of load factor of a Hash Table?

    premium question
    completed

    Answer:

  • 12.

    What is complexity of Hash Table?

    premium question
    completed

    Answer:

  • 13.

    What is Hash Collision?

    premium question
    completed

    Answer:

  • 14.

    What is hashing algorithm? How it works?

    premium question
    completed

    Answer:

  • 15.

    What is MD5?

    premium question
    completed

    Answer:

  • 16.

    How can Hash Functions be used to perform lookups?

    premium question
    completed

    Answer:

  • 17.

    Remove duplicates from an unsorted Linked List

    premium question
    completed

    Answer:

  • 18.

    Find similar elements from two Linked Lists and return the result as a Linked List

    premium question
    completed

    Answer:

  • 19.

    Explain some technics to handle collision in Hash Tables

    premium question
    completed

    Answer:

  • 20.

    What are some main advantages of Tries over Hash Tables

    premium question
    completed

    Answer:

  • 21.

    How To Choose Between a Hash Table and a Trie (Prefix Tree)?

    premium question
    completed

    Answer:

  • 22.

    What is the difference between HashMap and HashTable?

    premium question
    completed

    Answer:

  • 23.

    Explain when to use Hashing on practice?

    premium question
    completed

    Answer:

  • 24.

    Is it possible to decrypt MD5 hashes? Explain.

    premium question
    completed

    Answer:

  • 25.

    Compare lookup operation in Trie vs Hash Table

    premium question
    completed

    Answer:

  • 26.

    What is the difference between a Hash Function and a Cryptographic Hash Function?

    premium question
    completed

    Answer:

  • 27.

    What is a Salt and How Does It Make Password Hashing More Secure?

    premium question
    completed

    Answer:

  • 28.

    Why all hash functions are "broken"? Explain.

    premium question
    completed

    Answer:

  • 29.

    Explain types of Resistance any Cryptographic Hash Function shall have?

    premium question
    completed

    Answer:

  • 30.

    How can I pair socks from a pile efficiently?

    premium question
    completed

    Answer:

  • 31.

    How come that hash values are not reversible?

    premium question
    completed

    Answer:

One tip that got me hired by Google, Microsoft, and Stripe

I've worked for Microsoft, Google, Stripe, and received offers from many other companies. One thing I learned when I was interviewing myself is that standard interview tips are woefully inadequate.

Reverse Tech Interview: Questions to Stump an Interviewer

Few people want to get into an uncomfortable environment or an unprofitable company with no prospects. If you’re wondering how to get a real feel for a company during an interview, you’re welcome. I’ll give a list of questions that interviewers don’t usually expect...

How to become a programmer, move to the US, and get a dream job

Are you curious about what you need to do to earn more than $15.000 a month, drive a Tesla, live in sunny California, and work at Google, Apple, Facebook, or Amazon?

11 Reactive Systems interview questions and answers for software engineers

Reactive systems are an architectural style that allows multiple individual applications to blend into one unit, reacting to their environment, while staying aware of each other. Here is a list of coding interview questions on Reactive Systems to help you get ready for your next data struc...

. Reactive Systems
34 Microservices interview questions and answers for software engineers

Microservice architecture – a variant of the service-oriented architecture structural style – arranges an application as a collection of loosely coupled services. In a microservices architecture, services are fine-grained and the protocols are lightweight. Here is a list of coding intervie...

. Microservices
7 Layering & Middleware interview questions for developers

Middleware in the context of distributed applications is software that provides services beyond those provided by the operating system to enable the various components of a distributed system to communicate and manage data. Middleware supports and simplifies complex distributed application...

. Layering & Middleware
55 Docker interview questions and answers for software engineers

Docker is a set of platform as a service products that use OS-level virtualization to deliver software in packages called containers. Here is a list of coding interview questions on Docker to help you get ready for your next data structures interview in 2021.

. Docker
23 Databases interview questions and answers for software engineers

A database is an organized collection of data, generally stored and accessed electronically from a computer system. Where databases are more complex they are often developed using formal design and modeling techniques. Here is a list of coding interview questions on Databases to help you g...

. Databases
21 Concurrency interview questions and answers for software engineers

In computer science, concurrency is the ability of different parts or units of a program, algorithm, or problem to be executed out-of-order or in partial order, without affecting the final outcome. Here is a list of coding interview questions on Concurrency to help you get ready for your n...

. Concurrency
13 CAP Theorem interview questions and answers for software engineers

In theoretical computer science, the CAP theorem, also named Brewer's theorem after computer scientist Eric Brewer, states that it is impossible for a distributed data store to simultaneously provide more than two out of the following three guarantees: Consistency: Every read receives the ...

. CAP Theorem
Load more posts

Features

folder icon

Access all answers

Get the inside track on what to expect in your next tech interview. We offer you a collection of high quality technical interview questions to help you prepare for your next coding interview.

graph icon

Track progress

A smart interface helps you track your progress and focus on the topics you need. You can search through questions or sort them by difficulty or type.

clock icon

Save time

Save tens of hours searching for information on hundreds of low-quality sites designed to drive traffic and make money from advertising.

Land a six-figure job at one of the top companies.

amazon logo facebook logo google logo microsoft logo uber logo
Prepare for a technical interview

Get hired with our
tech interview questions & answers