Airtel Payments Bank Data Engineer Interview Questions and Answers

90 min MCQ +coding test on hackerrank.

Q1. Sort colors DSA question
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Q2. Detect cycle in a linked list
Ans. 
Use Floyd's Tortoise and Hare algorithm to detect cycle in a linked list.
• Initialize two pointers, slow and fast, at the head of the linked list.

• Move slow pointer by one step and fast pointer by two steps.

• If they meet at some point, there is a cycle in the linked list.
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Q1. Was asked about why you want to join the company,my experience etc.
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Q1. They asked to design a database table
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Q1. Self introduction
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Q2. Details about previous job role
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Q3. Can you handle manpower
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Q4. How much manpower you can handle
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Q5. Are you having the knowledge inSAP
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Aptitude test of 85 min

Q1. OOP concepts : - Inheritence , polymorphism
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Q2. DSA :- arrays , strings basic leetcode questions
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2 problem was given to solve
1) Smallest Negative balance - -----%20America%20-%20Weekly%20Algorithm%20Challenges/Week%2021%20Algorithm%20Challenge/Smallest%20Negative%20Balance.md
2) Find the absolute difference between alpha & beta from the array.
Alpha -An element k in a array occurs k consecutive time
Beta - An element k in an array occurs k consecutive time starting from index k

Sample input
Arr[] = {2,2,2,4,4,4,4,1,2,2]
Output
Alpha - 3
Beta - 1
Absolute difference - 1

Note : consider array index starts with 1

Dataweave logic questions

Q1. Basic HR questions
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Q2. Prepare basic interview answers
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Q1. C programming and its basic question like memory segments, compilation stages, structure and semaphore. Single linked list implementation.
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Q1. There were two managers in this interview. Asked about my roles and responsibilities in current project and gave some scenario in C programming to solve. Questions on embedded systems like process, thread...read more
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Q1. Salary discussion
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Tableau intensive assignment with few questions on SQL and basic Python

Q1. Discussion on submitted assignment and current job role
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Q2. What kind of analysis have you done in your current role?
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Q1. Basic discussion on why I am switching from my current company and salary discussion
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