redBus Interview Experience for Software Engineer | On-Campus 2021

05 Oct, 2021
Redbus visited our campus in the month of September 2021 for Software Engineer role. The shortlist for the online test was done on the basis of 2 parameters:
Parameter 1: 10th & 12th/Diploma marks – 87% & aboveParameter 2: BE CGPA – 8.5 & above
Parameter 1: 10th & 12th/Diploma marks – 87% & above
Parameter 2: BE CGPA – 8.5 & above
Round 1(Online Test): Test was moderate with 23 MCQs and 3 programming questions. MCQs were fine with questions on java concepts, c++ code snippets, and moderate aptitude questions. Coding was a bit tough.
One of the questions that I remember is:
Write a program in the language of your choice to find out how many minutes M will it take for a phone to reach from charge A to charge B (A and B are inputs, M should be the output). The rate at which it gets charged at different levels was given. 
 
For example:
0<= C <= 10 : 8 mins
11<= C <= 50 : 6 mins
And so on

Sample: If A= 0 and B=5 then M is 8 because in 8 minutes it reaches 10 
charge which is greater than 5.
Getting the output for at least 1 program along with decent performance in MCQs was sufficient to clear the test.
46 out of 211 students were shortlisted for the next round
Round 2:(Technical Interview 1):
Introduce yourself
Coding question to solve ( first occurrence of a number, binary search (palindrome, sorting for others)) and even explain the approach used with time complexity.
Questions regarding projects are mentioned in the resume. I was asked to show the code if the code is there in the system.
They shared a document having 2 coding questions (divisibility by 3, 5, or 10 & print element that is in the same position in 2 unequal length lists), 2 MCQ of guess the output (pointer questions), and 2-3 logical questions (relationship, number pattern, etc) which I was asked to solve.
30 students were shortlisted for the next round.
Round 3(Technical Interview 2):
Introduce yourself
Technical questions regarding oops concepts of java joins and normalization in DBMS etc.
Questions and discussions regarding projects.
Advantages of python and java over each other.
Coding question on finding the minimum element appearing before the maximum element in a list.
20 students were shortlisted for the next round.
Round 4(HR Round): 3rd level of discussion 
Technical questions like the implementation of stacks, stacks using queues or vice versa
Design a database table for a bus traveling from so and so time to so and so destinations.
HR questions like what was the most difficult situation encountered in life
How did you handle differences between your project partner while working on the project etc?
What are you passionate about in life?
Which technology would you like to work on in redbus
8 students were selected for a full-time offer.
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