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Koo App Interview Questions and Answers
Koo App Interview Experiences
5 interviews found
Anonymous
Selected
I applied via Campus Placement and was interviewed before Jun 2023. There were 3 interview rounds.
I have been asked 1 DSA question and 1 SQL question as the company came for campus recruitment.
(3 Questions)
- Q1. Discussion on Java and its fundamentals.
- Q2. Dynamic Programming question.
- Q3. Discussion over projects.
(1 Question)
- Q1. Basic HR questions like why you want to join us and all.
Sde1 Interview Questions asked at other Companies
Vikas Suthar
(2 Questions)
- Q1. Basic Kotlin and Android
- Q2. MVVM clean Architecutres
(3 Questions)
- Q1. About Jetpack Compose
- Q2. Kotlin Coroutines
- Q3. Android App Security
Senior Android Developer Interview Questions asked at other Companies
(1 Question)
- Q1. Tell us about your previous work experiences.
To check how customer centric
(1 Question)
- Q1. Salary discussion
Team Lead Interview Questions asked at other Companies
Selected
I applied via Approached by Company and was interviewed in Dec 2022. There were 4 interview rounds.
(1 Question)
- Q1. What are you looking for at Koo?
- Ans. Fast moving, growth opportunity, big impact and responsibilities
(3 Questions)
- Q1. 1. Max Sum subarray 2. Detect loop in linked list
- Ans.
Two technical questions related to algorithms and data structures.
Max Sum subarray: Find the contiguous subarray with the largest sum. Kadane's algorithm is a popular solution.
Detect loop in linked list: Use two pointers, one moving at twice the speed of the other. If they meet, there is a loop.
- Q2. 1. How is session authenticated in facebook and other websites when we login? 2. How to store large databases? Hashing related.
- Ans.
Session authentication in websites and storing large databases using hashing.
Session authentication in websites involves creating a unique session ID for each user upon login and storing it in a cookie or server-side session storage.
The session ID is then used to authenticate subsequent requests from the user.
Large databases can be stored using hashing techniques such as sharding, consistent hashing, and hash tables.
Sh...
- Q3. 1. Binary Search tree and B+ trees difference
- Ans.
Binary search trees are used for searching and sorting data, while B+ trees are used for indexing and storing data.
Binary search trees have a maximum of two children per node, while B+ trees have multiple children per node.
Binary search trees are best for small datasets, while B+ trees are better for large datasets.
Binary search trees have a faster search time, while B+ trees have a faster insertion and deletion time.
B...
(2 Questions)
- Q1. 1. Dynamic Programming on Longest Pallindromic Subsequence 2. Greedy Algorithm for Job Scheduling 3. DFS related graph problem
- Q2. 1. Current company role 2. Most Challenging aspect
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Skills evaluated in this interview
Software Engineer II Interview Questions asked at other Companies
Koo App interview questions for popular designations
I applied via LinkedIn and was interviewed before Sep 2021. There was 1 interview round.
(2 Questions)
- Q1. Guys , this operation manager only ask your experience-based question.
- Q2. Make sure what you guys mentioned on your CV, please elaborate properly with projects.
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I applied via Job Portal and was interviewed in Oct 2021. There were 3 interview rounds.
Interview Questionnaire
1 Question
- Q1. SQL queries, Date related manipulations in Excel and SQL
Interview Preparation Tips
Selected
I applied via Approached by Company and was interviewed before Oct 2022. There were 4 interview rounds.
(1 Question)
- Q1. Merge Sort based question
(1 Question)
- Q1. DP based question
(1 Question)
- Q1. Design API Rate Limiter
- Ans.
Design an API rate limiter to control the number of requests a user can make within a certain time frame.
Implement a token bucket algorithm to track and limit the number of requests per user.
Set a maximum limit of requests per user per time frame (e.g. 100 requests per hour).
Use a sliding window to track the requests and reset the limit after the time frame expires.
Interview Preparation Tips
Skills evaluated in this interview
Selected
I applied via Approached by Company and was interviewed before Sep 2022. There were 4 interview rounds.
(2 Questions)
- Q1. DSA round and medium level
- Q2. Merge sort type/variation
(1 Question)
- Q1. Data Structure and Algorithms
(1 Question)
- Q1. System Design LLD round
Selected
I applied via LinkedIn and was interviewed before Feb 2022. There were 3 interview rounds.
(2 Questions)
- Q1. Tell me something about yourself and your past experience if any
- Q2. Introduce yourself and tell them briefly your achievements
(2 Questions)
- Q1. Growth Opportunities and Last CTC
- Q2. Wait them to pitch the salary then say your expectations as per market standards.
Interview Preparation Tips
(2 Questions)
- Q1. How many days will u be available for work What days you are going to be busy what strategy will u use
- Q2. Above mentioned questions
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