Hash Tables Interview Questions

544+ real questions from verified interview reports across 12 companies.

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Sample Hash Tables Questions

Hi community, I just wanted to share my experience for new grad SDE 1 role at Amazon. I have spent a lot of time on reddit scrolling through different interview experience for this role and it has sur

Hi, I recently gave karat interview for paypal. The interviewer started rapid fire round of questions. first 10-15 mins - system design questions. easy based on latency, factors to calculate the numbe

Position: New Grad Software Engineer The interview started with behavioral questions and past experience. After interviewer asked me to find intersection of Two Arrays without using Set() function.

Part 1 Given a json string as input which contains an array of objects, each with an id and x, y coordinates. Compute the closeness of a coordinate from another. A...

Free online assessment (OA), 90 minutes, OOD (Out-of-Depth) format, relatively simple. You can use Google search. The following content requires points higher than 188. You can already browse Implemen

Completed an onsite for Verily pretty recently and got asked this pretty interesting problem in one of the rounds. ## Fun with Doubles ### Part 1 Given an array `arr` of integers, double each element

I was contacted by Recro company and told that first round will be conducted by AI(yes you read that right). Interview started with the automated voice asking me about my projects and there was some g

The original poster (OP) interviewed with Confluent and reviewed interview experiences and questions from other users. They expressed gratitude and offered some information to help others. The coding

Given m nodes and x documents, input two vectors: the first represents the absolute processing time for each document, and the second represents the processing duration for each document. Iterate thro

The following content requires a score higher than 180. You can already view it. OA - Byteboard Interview: The question was about an app that finds the midpoint between two locations. The format was s

This post was last edited by BrokenArrow on 2025-10-7 16:35. The coding section started with simple code, then broke it down into smaller questions, and finally required you to write a complete code s

This post was last edited by Anonymous on 2025-10-08 16:33. The first half hour of the first round involved some resume questions and basic Python questions. The second half hour consisted of a relati

There are four rounds in total. Because I also have to work, it's scheduled for two consecutive days. The following content requires a score higher than 188. You can already view it. 1. Coding Reverse

Logger Rate Limiter Design a logger system that receives a stream of timestamped messages. A message may be printed only if the same message has not been printed in the last `10` seconds. Implement

**Role:** Outreach Staff Engineer **Round 1: Low-Level Design and Coding** The interview began with a brief discussion of past work, followed by a design challenge to build a key-value store. The stor

**Problem Statement** Implement a function `String[] getRestaurentWithMaxVotes(String[][] res)` that determines which restaurant names appear most frequently in a given 2D array of strings. **Requirem

The following is a breakdown of technical challenges encountered during a recent interview process with Nike, covering Data Structures and Algorithms and Java fundamentals: **Target Sum (Single Pass)*

Had phone screen for Traba. Their company website is `https://traba.work` if you want to learn more ## The exercise Your job is to implement a cache as per the below requirements: - `get(key: string)`

The recruitment process for Amadeus Labs began with a pre-placement talk that provided an overview of the company and the roles available. The talk was informative, highli...

Amadeus IT Group is one of the top 10 travel technology companies in the world and it has its second-largest RD center in Bangalore. Amadeus visited our campus (PES Univer...

Hi there, I have a problem with this task with Python code. Alex was asked to mark up a huge number of pictures. Looking at the deadline and at a huge number...

LeetCode #560: Subarray Sum Equals K. Difficulty: Medium. Topics: Array, Hash Table, Prefix Sum. Asked at Walmart Labs in the last 6 months.

LeetCode #460: LFU Cache. Difficulty: Hard. Topics: Hash Table, Linked List, Design, Doubly-Linked List. Asked at Walmart Labs in the last 6 months.

LeetCode #1: Two Sum. Difficulty: Easy. Topics: Array, Hash Table. Asked at Infosys in the last 6 months.

LeetCode #560: Subarray Sum Equals K. Difficulty: Medium. Topics: Array, Hash Table, Prefix Sum. Asked at Infosys in the last 6 months.

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