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SDE

HashedIn
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4 rounds | 6 Coding problems

Interview preparation journey

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Preparation
Duration: 4 months
Topics: HashMap, Linked list, Graphs, System design, DS.
Tip
Tip

Tip 1 : Read previous interviews
Tip 2 : Take necessary courses for developing skills
Tip 3 : Do development

Application process
Where: Other
Eligibility: NA
Resume Tip
Resume tip

Tip 1 : Write what is required in job role
Tip 2 : Try to make it short

Interview rounds

01
Round
Easy
Online Coding Test
Duration90 minutes
Interview date3 Jan 2022
Coding problem1

1. 3 Divisors

Moderate
25m average time
75% success
0/80
Asked in companies
OlaHashedIn

You are given a positive integer ‘N’. Your task is to find all the positive integers between 1 and ‘N’ (both inclusive) that have exactly 3 divisors. Print these numbers in increasing order.

Note :
It is guaranteed that there is at least one such integer under given constraints.
Try solving now
02
Round
Easy
Video Call
Duration60 minutes
Interview date4 Jan 2022
Coding problem3

Basic Questions on Introduction and Resume:

How are you doing? How’s the COVID situation in your place? Is your college open?
After basic questions revolving around my whereabouts, he asked me to introduce myself.
He picked some projects which intrigued him and started shooting questions about them.
I had prepared it on my own from scratch so I could answer all his queries with ease.
He asked me about my recent internships. Tech stacks that I am working on. Hardships I am facing. So on, so forth.
Theory Questions around CS Fundamentals: The interviewer covered all the core subjects:(CN/ DBMS/ OS/ OOP). So be well versed with them before the interview.



 

1. DBMS And OOPS Questions

What do you know about SQL Views?
What are the different types of VPN?
What is IPV6? Main Purpose.
What is Indexing in a Database?
What is Data Abstraction?
What do you mean by thrashing?
What is the difference between Multitasking and Multiprogramming?

2. Shortest subarray with sum at least K

Moderate
15m average time
85% success
0/80
Asked in companies
ApplePayPalPark+

Given an array/list 'ARR' of integers and an integer ‘K’. You are supposed to return the length of the shortest subarray that has a sum greater than or equal to ‘K’. If there is no subarray with a sum greater than or equal to K, then return -1.

Note :
An array ‘B’ is a subarray of an array ‘A’ if ‘B’ that can be obtained by deletion of, several elements(possibly none) from the start of ‘A’ and several elements(possibly none) from the end of ‘A’. 
Try solving now

3. 3Sum

Moderate
15m average time
85% success
0/80
Asked in companies
Goldman SachsAdobeAmazon

You are given an array/list ARR consisting of N integers. Your task is to find all the distinct triplets present in the array which adds up to a given number K.

An array is said to have a triplet {ARR[i], ARR[j], ARR[k]} with sum = 'K' if there exists three indices i, j and k such that i!=j, j!=k and i!=j and ARR[i] + ARR[j] + ARR[k] = 'K'.

Note:
1. You can return the list of values in any order. For example, if a valid triplet is {1, 2, -3}, then {2, -3, 1}, {-3, 2, 1} etc is also valid triplet. Also, the ordering of different triplets can be random i.e if there are more than one valid triplets, you can return them in any order.
2. The elements in the array need not be distinct.
3. If no such triplet is present in the array, then return an empty list, and the output printed for such a test case will be "-1".
Try solving now
03
Round
Easy
Video Call
Duration90 minutes
Interview date5 Jan 2022
Coding problem1

This round revolved around “Low-Level Design” or “DB schema Designing”. It’s generally a little challenging for freshers like us. But from my experience they judge you on a few parameters:

Your approach to a real-world problem.
Your thinking ability.
Basic knowledge of OOP implementation.
And, the correct usage of Data Structures.


 

1. System Design

Design uber.

04
Round
Easy
Video Call
Duration60 minutes
Interview date6 Jan 2022
Coding problem1

1. Technical Questions

This was fitment round
How are you doing? Tell me about your family your interests/hobbies.
Since I lead a club, she asked me everything about it.
The challenges we faced in our club during Pandemic.
Why Hashed In?
Do you hold any offers currently? CTC offered by them.

Here's your problem of the day

Solving this problem will increase your chance to get selected in this company

Skill covered: Programming

How do you remove whitespace from the start of a string?

Choose another skill to practice
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