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Airtel X- Labs Software Developer Interview Questions, Process, and Tips
Airtel X- Labs Software Developer Interview Experiences
1 interview found
Anonymous
(2 Questions)
- Q1. Merge overlapping integers
- Ans.
Merge overlapping intervals in an array of integers
Sort the intervals based on the start value
Iterate through the intervals and merge overlapping ones
Return the merged intervals
- Q2. Merge two sorted array
- Ans.
Merge two sorted arrays into a single sorted array
Create a new array to store the merged result
Compare elements from both arrays and add the smaller one to the result array
Continue this process until all elements from both arrays are merged
(2 Questions)
- Q1. Sort 0 1 2 array
- Ans.
Sort an array of strings containing only 0s, 1s, and 2s.
Use counting sort algorithm to sort the array in linear time complexity.
Count the occurrences of 0s, 1s, and 2s in the array.
Reconstruct the array with the sorted counts.
- Q2. Print left view of a binary tree
- Ans.
Print the left view of a binary tree
Traverse the tree in a level order traversal
Print the first node at each level encountered
Use a queue to keep track of nodes at each level
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
Noramal basic algorithm and ,fetch api
(1 Question)
- Q1. React alll basic question,redux,class component,functional component
I applied via campus placement at RV College Of Engineering (RVCE) and was interviewed in Aug 2024. There were 2 interview rounds.
3 Medium level dsa questions
(2 Questions)
- Q1. Lld of cab booking system
- Ans.
The Low Level Design (LLD) of a cab booking system involves detailing the system architecture and components at a lower level of abstraction.
Identify the main components of the system such as user interface, booking engine, payment gateway, and driver allocation algorithm.
Define the interactions between these components and how data flows between them.
Specify the data structures and algorithms used for efficient bookin...
- Q2. Discussion about online assesment
Interview Preparation Tips
Skills evaluated in this interview
(2 Questions)
- Q1. Given an array of n numbers , find the kth largest find the sum from a th largest to bth largest n can be huge
- Ans.
Find the sum of kth to bth largest numbers in a huge array efficiently.
Sort the array in descending order to easily find the kth and bth largest numbers.
Use a priority queue or min heap to efficiently find the kth and bth largest numbers without sorting the entire array.
Once you have the kth and bth largest numbers, iterate through the array and sum the numbers between them.
- Q2. Mostly elasticsearch related and company work related questions
Skills evaluated in this interview
I applied via Job Portal and was interviewed in Jul 2024. There was 1 interview round.
(2 Questions)
- Q1. SOLID principles
- Q2. Microservice Architecture and Kafka
Interview Preparation Tips
I applied via Naukri.com
(2 Questions)
- Q1. Union and union all difference
- Ans.
UNION combines the results of two or more SELECT statements, while UNION ALL includes duplicates.
UNION removes duplicate rows, while UNION ALL retains all rows including duplicates
UNION is slower than UNION ALL as it performs a distinct operation
UNION requires the same number of columns in the SELECT statements, while UNION ALL does not have this restriction
- Q2. What is generic and non-generic collections
- Ans.
Generic collections allow storing any type of data, while non-generic collections are type-specific.
Generic collections can store any type of data, such as List
or Dictionary Non-generic collections are type-specific, like ArrayList or HashTable.
Generic collections provide type safety and better performance compared to non-generic collections.
Interview Preparation Tips
Skills evaluated in this interview
Selected
I applied via LinkedIn and was interviewed in Apr 2024. There were 2 interview rounds.
I was asked with writing the code and algorithms. Also lots of MySQL queries
Interview Preparation Tips
You need to be present in the office for more than 9hrs even if you don't have any work.
It doesn't matter for which position you are hired you'll be put to any of the technology depending on the client requirements.
HAckerrank based test
(1 Question)
- Q1. General discussion on experience
(3 Questions)
- Q1. Knowledge on SQL and how to write a query
- Q2. Knowledge on DSA and coding problems to solve.
- Q3. Knowledge on APIS (structure, security etc.)
Interview Preparation Tips
Be confident about stuff that you know but be humble enough to say No to what you don't know.
I applied via Company Website and was interviewed in May 2022. There were 3 interview rounds.
Through carefully designed workshops and activities, master testing fundamentals like Test Strategy, Test Data Generation, Test Case Design, Defect Life Cycle, Software Testing Levels, Software Testing Types, Estimation, Metrics, and Testability.
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Interview Preparation Tips
Coading language HTML CSS JAVASCRIPT PHP MySQL frontend developer
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