83 questions · from 9 interviews
Hashedin By Deloitte interview questions
Every question candidates reported from their Hashedin By Deloitte interviews, most frequently asked first. Each links to the write-up it came from, so you can see the round and how it went.
Hashedin By Deloitte coding and DSA questions
- 01
Merge Sort on Linked List
I was asked to implement Merge Sort on a Linked List within their system.
Medium · From HashedIn by Deloitte SDE-1 Interview Experience | Off campus lateral Hiring 2025
- 02
Meeting Room Problem (Merge Intervals)
I encountered a DSA question related to the Meeting Room problem, which often involves the Merge Intervals pattern. There was a long discussion on the optimal approach.
Medium · From HashedIn by Deloitte SDE-1 Interview Experience | Off campus lateral Hiring 2025
- 03
Longest Common Substring
Discussed the problem of finding the longest common substring.
Medium · From HashedIn by Deloitte – On-Campus Interview Experience (SDE Role)
- 04
Buy and Sell Stock (variation)
A variation of the Buy and Sell Stock problem was discussed.
Medium · From HashedIn by Deloitte – On-Campus Interview Experience (SDE Role)
- 05
Balanced Parentheses
Discussed the problem of checking for balanced parentheses.
Medium · From HashedIn by Deloitte – On-Campus Interview Experience (SDE Role)
- 06
Generate All Valid IP Addresses
Given a string, generate all possible valid IP addresses.
Medium · From HashedIn by Deloitte – On-Campus Interview Experience (SDE Role)
- 07
Sort Characters in a String
Sort the characters in a string.
Easy · From Interview Experience – HashedIn by Deloitte (CTC : 8.1 LPA) | SDE | On-Campus
- 08
Minimum Length Subarray with All Distinct Elements
Find the minimum length subarray that contains all distinct elements of the array.
Medium · From Interview Experience – HashedIn by Deloitte (CTC : 8.1 LPA) | SDE | On-Campus
- 09
Minimum Length Subarray with Distinct Elements T Times
Given an array and an integer T , find the minimum length subarray that contains all its distinct elements at least T times .
Hard · From Interview Experience – HashedIn by Deloitte (CTC : 8.1 LPA) | SDE | On-Campus
- 10
Single Number
LeetCode 136 – Single Number
From Interview Experience – HashedIn by Deloitte (CTC : 8.1 LPA) | SDE | On-Campus
- 11
Contains Duplicate II
LeetCode 219 – Contains Duplicate II
From Interview Experience – HashedIn by Deloitte (CTC : 8.1 LPA) | SDE | On-Campus
- 12
Best Time to Buy and Sell Stock
Given an array prices where prices[i] is the price of a given stock on the i -th day, find the maximum profit you can achieve. You may complete at most one transaction (i.e., buy one and sell one share of the stock).
Easy · From HashedIn by Deloitte Interview Experience
- 13
Search in a 2D Matrix
Write an efficient algorithm that searches for a target value in an m x n integer matrix. This matrix has the following properties: Each row is sorted in non-decreasing order. The first integer of each row is greater than the last integer of the previous row.…
Medium · From HashedIn by Deloitte Interview Experience
- 14
- 15
Reverse Linked List in K-Groups
DSA Question: Reverse a Linked List – Extended to reversing in K-groups.
- 16
Add Large Numbers Represented as Strings
Given two strings consisting of characters '0'-'9', add both numbers. Note that typecasting to int or long is not allowed, as the numbers might be too large to fit in 32-64 bit integers.
Medium · From HashedIn by Deloitte 2024 | SDE-1| OFFER
- 17
Multiply Large Numbers Represented as Strings
Given two strings consisting of characters '0'-'9', multiply both numbers. Note that typecasting to int or long is not allowed, as the numbers might be too large to fit in 32-64 bit integers.
Hard · From HashedIn by Deloitte 2024 | SDE-1| OFFER
- 18
Complex SQL Query for E-commerce Data
Given an e-commerce database design, write an SQL query to fetch the name, email, and a list of orders made in the last 4 days associated with a specific residential address from the platform. Multiple such complex queries involving various join operations…
Medium · From HashedIn by Deloitte 2024 | SDE-1| OFFER
- 19
Next Greater Element (Stack-based)
A problem conceptually related to finding the Next Greater Element, presented with a narrative and specific test cases. The optimal solution typically involves using a stack data structure to achieve linear time complexity. The interviewer initially seemed to…
Medium · From HashedIn by Deloitte 2024 | SDE-1| OFFER
- 20
Longest Palindromic Subsequence (LPS via LCS)
Given a string, find its Longest Palindromic Subsequence (LPS). A hint was provided: reverse the string and find the Longest Common Subsequence (LCS) between the original string and its reversed version.
Medium · From Hashedin By Deloitte SDE - I campus hiring experience
- 21
Second Largest Palindromic Subsequence
Given a string, find the second longest palindromic subsequence.
Hard · From Hashedin By Deloitte SDE - I campus hiring experience
- 22
Detect Cycle in Linked List (Hare and Tortoise)
Explain and implement Floyd's Cycle-Finding Algorithm (Hare and Tortoise method) to detect a cycle in a linked list.
Easy · From Hashedin By Deloitte SDE - I campus hiring experience
- 23
Implement Stack using Queue
Implement a stack data structure using one or more queues.
Medium · From Hashedin By Deloitte SDE - I campus hiring experience
- 24
Max Ones After Flipping Range
A Binary String Problem to find the maximum number of ones after flipping all the digits within a continuous range.
Medium · From HashedIn by Deloitte Interview Experience for SDE Intern+FTE | On-Campus 2024
- 25
Missing and Repeating Element
Find the missing and repeating element in an array.
From HashedIn by Deloitte Interview Experience for SDE Intern+FTE | On-Campus 2024
8 more in the Hashedin By Deloitte write-ups.
Hashedin By Deloitte system design questions
- 01
HLD: Scalability and Database Comparison
I faced basic High-Level Design questions focusing on system scalability and had a discussion comparing SQL vs NoSQL databases.
From HashedIn by Deloitte SDE-1 Interview Experience | Off campus lateral Hiring 2025
- 02
Low-Level Design: Library Management System
I was asked to design a Library Management System (LLD). The discussion covered necessary functions, optimal algorithms for insertion and deletion, rationale for choosing a specific database, and methods for optimal searching, including a discussion on Trie…
Hard · From HashedIn by Deloitte SDE-1 Interview Experience | Off campus lateral Hiring 2025
- 03
System Design for a Given System Description
Given a system description, I was asked to define Functional and Non-Functional Requirements, draw a complete architecture (API Gateway, Load Balancer, Middlewares), design the database, write 5-6 SQL queries based on the schema, explain scaling strategies,…
Hard · From HashedIn by Deloitte – On-Campus Interview Experience (SDE Role)
- 04
Design a Parking Lot Database Schema
I was asked to design a database schema for a Parking Lot system . After completing the initial design, the interviewer gradually introduced new features and requirements , and I had to update the schema accordingly . Based on the final design, I was also…
From Interview Experience – HashedIn by Deloitte (CTC : 8.1 LPA) | SDE | On-Campus
- 05
Design Multi-Tenant E-commerce Platform
I was asked to design a multi-tenant e-commerce platform similar to Amazon. The design needed to support multiple vendors (tenants), each having separate product catalogs, shared infrastructure with isolation, scalability, caching, availability, and…
Hard · From HashedIn by Deloitte Interview Experience
- 06
E-commerce Database Design
System Design Discussion: E-commerce Database Design. Handling multiple items in a single order (focused on Atomicity). Supporting various payment methods: UPI, Credit Card, Cash.
- 07
Netflix Database Design
System Design: Netflix Database. Base design followed by enhancement questions: How to retrieve paused but not completed movies. How to retrieve location-specific movies (region availability filtering).
- 08
E-commerce Platform Database Design
Design a database schema for an e-commerce platform. This task included identifying necessary tables (e.g., customerdetails , productcategory , pricing , supplierdata ), establishing relationships (one-to-many, primarykey, foreignkey), and normalizing the…
Medium · From HashedIn by Deloitte 2024 | SDE-1| OFFER
- 09
Design a High-Level Flipkart-type App
Design a high-level system for an e-commerce application similar to Flipkart, incorporating specified features. This included creating API call flow diagrams, designing a database schema with foreign key references, and performing database normalization.
Medium · From Hashedin By Deloitte SDE - I campus hiring experience
- 10
Restaurant Table Booking Database Design
Design a database for a restaurant table booking application. This included database design with a proper schema, creating an ERD (Entity-Relationship Diagram), and writing queries for all the requested features.
From HashedIn by Deloitte Interview Experience for SDE Intern+FTE | On-Campus 2024
- 11
Instagram-like App Database Design
Design the database schema and write API endpoints for an application similar to Instagram. This includes defining tables, relationships, normalization, writing queries for data fetching, and considering features like infinite scrolling.
Hashedin By Deloitte behavioural and HR questions
- 01
Behavioral: Career Motivation and Fit
I was asked several behavioral questions including why I am joining the company, reasons for leaving my previous opportunity, and some casual questions about my college and family background.
From HashedIn by Deloitte SDE-1 Interview Experience | Off campus lateral Hiring 2025
- 02
Strengths and Weaknesses
I was asked about my strengths and weaknesses .
From Interview Experience – HashedIn by Deloitte (CTC : 8.1 LPA) | SDE | On-Campus
- 03
Why HashedIn by Deloitte
I was asked why I chose HashedIn by Deloitte and what interested me about the company.
From Interview Experience – HashedIn by Deloitte (CTC : 8.1 LPA) | SDE | On-Campus
- 04
Family Background Questions
The interviewer also asked a few questions about my family background .
From Interview Experience – HashedIn by Deloitte (CTC : 8.1 LPA) | SDE | On-Campus
- 05
Project Walkthrough
I was asked to walk through one of my recent projects, detailing its purpose, my contributions, challenges faced, and outcomes.
- 06
Debugging Production Bugs
A question on my approach and methodology for debugging production issues and ensuring quick resolution.
- 07
Working Under Pressure
I was asked to describe situations where I had to work under pressure and how I managed them.
- 08
Team Conflict Resolution
A question about how I handle and resolve conflicts within a team environment.
- 09
Motivation for Role Change
I was asked about my motivations for seeking a new role and why I was interested in HashedIn by Deloitte.
- 10
Behavioral Questions (Motivation, Team Fit, Future Goals)
Behavioral Questions focused on motivation, team fit, and future goals.
- 11
Behavioral Questions (Motivation & Fit)
A series of tricky behavioral questions designed to assess honesty, motivation, and cultural fit. Examples included: 'We offer around 9 LPA. Tomorrow, if another company offers you more, what would you do?' and 'We saw your performance and feedback; how are…
- 12
What would you do if you received ₹10 crore today?
Situational question: What would you do if you received ₹10 crore today?
- 13
Tell Me About Your Background
From which place do I belong?
From HashedIn by Deloitte Interview Experience for SDE Intern+FTE | On-Campus 2024
- 14
Family Introduction
Provide a brief introduction about your family.
From HashedIn by Deloitte Interview Experience for SDE Intern+FTE | On-Campus 2024
- 15
What Can You Bring to HashedIn?
What can you bring to HashedIn by Deloitte?
From HashedIn by Deloitte Interview Experience for SDE Intern+FTE | On-Campus 2024
- 16
Why Should We Hire You?
Why should they hire you?
From HashedIn by Deloitte Interview Experience for SDE Intern+FTE | On-Campus 2024
- 17
What Do You Know About HashedIn?
What do you know about HashedIn by Deloitte?
From HashedIn by Deloitte Interview Experience for SDE Intern+FTE | On-Campus 2024
- 18
Behavioral Questions (Teamwork, Challenges)
This round involved standard behavioral questions focused on my resume and past projects. I was asked about my role in projects, how I managed my team, the toughest situations I faced and how I tackled them, and how I would motivate a team member who isn't…
Hashedin By Deloitte other questions
- 01
SQL Join Query
Write an SQL query involving a join between two tables.
From Interview Experience – HashedIn by Deloitte (CTC : 8.1 LPA) | SDE | On-Campus
- 02
Simple REST API Implementation
Write code for a simple REST API.
From Interview Experience – HashedIn by Deloitte (CTC : 8.1 LPA) | SDE | On-Campus
- 03
What is a REST Controller
What is a REST Controller
From Interview Experience – HashedIn by Deloitte (CTC : 8.1 LPA) | SDE | On-Campus
- 04
Spring Boot Directory Structure
Directory structure of a Spring Boot application
From Interview Experience – HashedIn by Deloitte (CTC : 8.1 LPA) | SDE | On-Campus
- 05
Spring Boot XML Configuration
Use of XML-based configuration
From Interview Experience – HashedIn by Deloitte (CTC : 8.1 LPA) | SDE | On-Campus
- 06
Spring Boot Annotations
Commonly used annotations
From Interview Experience – HashedIn by Deloitte (CTC : 8.1 LPA) | SDE | On-Campus
- 07
Java Interface Definition
What is an interface in Java
From Interview Experience – HashedIn by Deloitte (CTC : 8.1 LPA) | SDE | On-Campus
- 08
Deadlock Definition
What is deadlock
From Interview Experience – HashedIn by Deloitte (CTC : 8.1 LPA) | SDE | On-Campus
- 09
Deadlock Prevention Methods
Methods to prevent deadlock
From Interview Experience – HashedIn by Deloitte (CTC : 8.1 LPA) | SDE | On-Campus
- 10
Round Robin Scheduling Definition
What is Round Robin scheduling
From Interview Experience – HashedIn by Deloitte (CTC : 8.1 LPA) | SDE | On-Campus
- 11
Swap Sex of Employees
I was given a database table containing employee information and asked to write an SQL query to swap the 'sex' column values (e.g., 'm' to 'f' and 'f' to 'm').
Easy · From HashedIn by Deloitte Interview Experience
- 12
Web Technologies & Security Concepts
Discussion on JWT (JSON Web Tokens) and its underlying principles, cookies, OAuth, and general questions related to resume projects. A specific question was asked about the default encoding format of JWT tokens.
- 13
Diamond Inheritance in C++
Discuss the concept of diamond inheritance in C++.
- 14
Types of Joins in SQL
Explain different types of joins available in SQL.
- 15
Virtual Constructor Concept
Explain the concept of a virtual constructor. Is it possible to have virtual constructors in C++?
- 16
Find Second Largest Element in SQL Table
Write an SQL query to find the second largest element in a given table.
Medium · From Hashedin By Deloitte SDE - I campus hiring experience
- 17
Unique vs Primary Key
Explain the difference between Unique and Primary keys in a database.
From HashedIn by Deloitte Interview Experience for SDE Intern+FTE | On-Campus 2024
- 18
WHERE vs HAVING Clause
Explain the difference Between Where and Having Clause in SQL.
From HashedIn by Deloitte Interview Experience for SDE Intern+FTE | On-Campus 2024
- 19
SQL Commands
What are SQL Commands?
From HashedIn by Deloitte Interview Experience for SDE Intern+FTE | On-Campus 2024
- 20
React Hooks
What are React Hooks? (Since I mentioned React in my resume).
From HashedIn by Deloitte Interview Experience for SDE Intern+FTE | On-Campus 2024
- 21
JWT Authentication
How does JWT Authentication work?
From HashedIn by Deloitte Interview Experience for SDE Intern+FTE | On-Campus 2024
Hashedin By Deloitte interview questions FAQ
What questions are asked in Hashedin By Deloitte interviews?
Candidates reported 83 distinct questions across 9 Hashedin By Deloitte interviews. 33 coding and DSA questions, 11 system design questions, 18 behavioural and HR questions, 21 other questions.
How difficult are Hashedin By Deloitte interview questions?
Of the questions candidates rated, 15% were easy, 63% medium and 22% hard.