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Grey Orange interview experience Real time questions & tips from candidates to crack your interview

Fullstack Developer

Grey Orange
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2 rounds | 4 Coding problems

Interview preparation journey

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Application story
I started my journey by tackling approximately 50-60 coding questions on a platform to brush up on my programming syntax and get into the right mindset. Subsequently, I engaged in coding exercises on multiple platforms simultaneously, diving into various data structure topics. I began with LinkedLists, working through around 40 questions, then progressed to Hashing, Stack, Queue, and Trees. While my focus was primarily on these topics, I also delved into Graphs, solving a few questions related to BFS, DFS, and topological sorting. In the realm of Dynamic Programming, I tackled approximately 20-25 questions, covering generic problems such as LCS and Knapsack. My approach to problem-solving typically involved spending 10-15 minutes attempting to devise a solution. If I encountered difficulties, I would seek clarification from online resources such as posts or YouTube videos. Any unresolved challenges were added to my to-do list and revisited the following day or shortly after for further coding and comprehension.
Preparation
Duration: 8 months
Topics: Moderate data structures like a Linked Lists, Trees, Graphs, and arrays.
Tip
Tip

Tip 1: Practice at least 20 questions from each topic, such as LinkedLists, Graphs, Trees, HashMaps, and all medium data structures.

Tip 2: Try to complete the medium code within 30 minutes.

Tip 3: Prepare in one coding language in which you are most comfortable.

Application process
Where: Referral
Eligibility: More than 2 years of experience
Resume Tip
Resume tip

Tip 1: Include projects on your resume. 

Tip 2: Never include false information.

Interview rounds

01
Round
Hard
Face to Face
Duration60 minutes
Interview date5 Apr 2024
Coding problem2

1. Course Schedule

Easy
15m average time
85% success
0/40
Asked in companies
UberPaytm (One97 Communications Limited)Apple

There are a total of numCourses courses you have to take, labeled from 0 to numCourses - 1. You are given an array prerequisites where prerequisites[i] = [ai, bi] indicates that you must take course bi first if you want to take course ai.For example, the pair [0, 1], indicates that to take course 0 you have to first take course 1.Return true if you can finish all courses. Otherwise, return fals...

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2. Understanding APIs, Constructors, and Design Patterns in Java

Difference b/w a RESTful API from a SOAP API.?
Can a

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02
Round
Hard
Face to Face
Duration50 minutes
Interview date9 Apr 2024
Coding problem2

1. Koko Eating Bananas

Koko loves to eat bananas. There are n piles of bananas, the ith pile has piles[i] bananas. The guards have gone and will come back in h hours.Koko can decide her bananas-per-hour eating speed of k. Each hour, she chooses some pile of bananas and eats k bananas from that pile. If the pile has less than k bananas, she eats all of them instead and will not eat any more bananas during this hour.Ko...

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2. Bulls and Cows

You are playing the Bulls and Cows game with your friend.You write down a secret number and ask your friend to guess what the number is. When your friend makes a guess, you provide a hint with the following info:The number of "bulls", which are digits in the guess that are in the correct position.The number of "cows", which are digits in the guess that are in your secret number but are located ...

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