Spinny interview experience Real time questions & tips from candidates to crack your interview
SDE - 1
Spinny
4 rounds | 3 Coding
problems
Selected Interview preparation journey
Preparation
Duration: 2 months
Topics: Data Structures, Algorithms, OOPS, DBMS, Networking
Tip 1 : Commonly Asked questions, around 15 medium questions for each topic
Tip 2 : Focus on writing production level code and readable code
Tip 3 : Know your current projects and scale of the applications and challenges around it
Application process
Where: Other
Eligibility: No criteria, Resume based hiring
Tip 1 : Don't have false information or the projects you haven't done personally on your resume
Tip 2 : Pick few interesting problems/ projects to be explained well to the interviewer.
Interview rounds
01
Round
Medium
Online Coding Interview
Duration90 Minutes
Interview date1 Aug 2020
Coding problem0
Timing - Can take anytime.
Coding environment was smooth and friendly.
It had 3 DSA questions.
2 questions were very easy based on array and string and one was of medium level question.
02
Round
Medium
Video Call
Duration60 Minutes
Interview date3 Aug 2021
Coding problem2
Basic Data structure complexity questions around time and space for binary search, heap and trees.
Then two medium level questions.
Timing - During the day
Interviewer was friendly and supportive.
Interviewed allowed me to view syntax online for min heap.
1. Print Permutations - String
Easy
30m average time
80% success
0/40
Asked in companies
You are given an input string 'S'. Your task is to find and return all possible permutations of the input string.
Note:
1. The input string may contain the same characters, so there will also be the same permutations.
2. The order of permutation does not matter.
Problem approach
I used backtracking to solve this.
2. Maximum of minimum for every window size
Hard
45m average time
50% success
0/120
Asked in companies
You are given an array of ‘N’ integers, you need to find the maximum of minimum for every window size. The size of the window should vary from 1 to ‘N’ only.
For example:
ARR = [1,2,3,4]
Minimums of window size 1 = min(1), min(2), min(3), min(4) = 1,2,3,4
Maximum among (1,2,3,4) is 4
Minimums of window size 2 = min(1,2), min(2,3), min(3,4) = 1,2,3
Maximum among (1,2,3) is 3
Minimums of window size 3 = min(1,2,3), min(2,3,4) = 1,2
Maximum among (1,2) is 2
Minimums of window size 4 = min(1,2,3,4) = 1
Maximum among them is 1
The output array should be [4,3,2,1].
03
Round
Medium
Video Call
Duration60 Minutes
Interview date8 Aug 2021
Coding problem1
This round consisted of low level design of a cricket scoreboard.
I had to use OOPs concepts and readable code, the round was only for 60 mins. so interviewer didn't ask for production ready code or a running code.
Interviewer was very friendly and supportive and participated well in discussion.
1. System Design Question
Low Level Design for cricket scoreboard
Problem approach
I used different set of enums for constant value and used inheritance, interfaces and combination of OOPs based concepts.
04
Round
Easy
Video Call
Duration45 Minutes
Interview date10 Aug 2021
Coding problem0
This was a CTO round.
I was asked questions on cryptography, DBMS, optimisation at OS and DB level, few networking concepts, about my experience at previous organisation and the scale with the previous systems I worked with.
There were cultural based questions and formal questions like how soon can you join and notice period and stuff like that.
The interview lasted for around 45 mins.
The environment for the interview was friendly.
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Skill covered: Programming
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