HashedIn interview experience Real time questions & tips from candidates to crack your interview
SDE - 1
HashedIn
3 rounds | 4 Coding
problems
Selected Interview preparation journey
Preparation
Duration: 1 month
Topics: Data Structures, Algorithms, System Design, Aptitude, OOPS
Tip 1 : Must do Previously asked Interviews as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at least 2 good projects and you must know every bit of them.
Application process
Where: Other
Eligibility: Above 7 CGPA
Tip 1 : Have at least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
Interview rounds
01
Round
Medium
Online Coding Test
Duration60 minutes
Interview date20 May 2021
Coding problem2
I was called for 1st round which was an online coding round. It was on zoom call for 1 hour in the afternoon. I was asked to turn on my video and share my screen and was told to use any IDE that I was comfortable with. After discussing the solution with the interviewer, if they are okay with it, I can write the code and after that is done, I have to paste the solution into a google doc.
1. Longest Palindromic Subsequence
Hard
45m average time
50% success
0/120
Asked in companies
You have been given a string ‘A’ consisting of lower case English letters. Your task is to find the length of the longest palindromic subsequence in ‘A’.
A subsequence is a sequence generated from a string after deleting some or no characters of the string without changing the order of the remaining string characters. (i.e. “ace” is a subsequence of “abcde” while “aec” is not).
A string is said to be palindrome if the reverse of the string is the same as the actual string. For example, “abba” is a palindrome, but “abbc” is not a palindrome.
Problem approach
I took 2 pointers one at the start and one at the end. If starting pointer is equal to the end pointer I would move both pointers by one, if it doesn't then left pointer by one.
2. Reverse the String
Easy
15m average time
85% success
0/40
Asked in companies
You are given a string 'STR'. The string contains [a-z] [A-Z] [0-9] [special characters]. You have to find the reverse of the string.
For example:
If the given string is: STR = "abcde". You have to print the string "edcba".
follow up:
Try to solve the problem in O(1) space complexity.
Problem approach
I just traversed from the end and append each letter in a new string character by character.
02
Round
Medium
Face to Face
Duration60 minutes
Interview date2 Jun 2021
Coding problem1
This was a Low-Level System Design round. We will be asked to design a system starting from the database, then classes and then high-level architecture for a given system.
1. System Design Question
Design database and class level diagram for the BookMyDoctor system.
03
Round
Easy
HR Round
Duration30 minutes
Interview date7 Jun 2021
Coding problem1
This was a mangerial round. I was asked about my previous experience, how I followed agile technology in previous companies, how I used to handle client requests, my roles and responsibilities and aspirations.
1. Basic HR Question
Tell us an incident where you took ownership for a task.
Problem approach
Tip 1 : The cross-questioning can go intense sometimes, think before you speak.
Tip 2 : Be open-minded and answer whatever you are thinking, in these rounds I feel it is important to have an opinion.
Tip 3 : The context of questions can be switched, pay attention to the details. It is okay to ask questions in these rounds, like what are the projects currently the company is investing in and which team you are mentoring, how is the work environment etc.
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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