RedBus Sdet-I Interview Questions and Answers

First round was DSA and Projects you worked on.

Second round was DSA, Java and projects worked on

Q1. Why you want to join us?
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Q2. Why you are leaving your current org?
Ans. 
Seeking new challenges and growth opportunities.
• Looking for new challenges and opportunities for growth

• Interested in exploring different technologies and industries

• Seeking a better work-life balance

• Want to work in a more collaborative team environment
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2 question of DSA (easy, medium) in 60 minutes

Q1. Playlist Shuffle
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Q2. Deletion in min heap
Ans. 
Deletion in min heap involves removing the root node and rearranging the heap to maintain the min heap property.
• To delete the root node in a min heap, swap it with the last node in the heap.

• Remove the last node and then heapify the heap starting from the root to maintain the min heap property.

• Example: If the min heap is [10, 20, 30, 25, 40], after deletion the heap becomes [20, 25, 30, 40].
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Hackerrank - 3 questions 2 hrs

Hackerrank test with medium questions

Q1. Machine coding round to design a shopping cart
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Very Easy questions just do it

Q1. What is your introduction
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Q2. Why SDE 1 only not SDE 2
Ans. 
SDE 1 is an entry-level position where candidates gain foundational skills before advancing to SDE 2.
• SDE 1 focuses on learning and building foundational skills in software development.

• SDE 2 requires more experience and expertise in software development.

• Advancing from SDE 1 to SDE 2 is a common career progression in tech companies.

• SDE 1 roles often involve working on smaller projects or components of larger projects.

• SDE...read more
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Q3. If bully happens will you bully someone
Ans. 
No, I believe in standing up against bullying and supporting those who are being bullied.
• I do not support bullying in any form and believe in treating others with respect and kindness.

• I would try to intervene and help the person being bullied, either by talking to the bully or seeking help from a teacher or supervisor.

• I believe in creating a positive and inclusive environment where everyone feels safe and respected.
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Q4. If taken leave can you work 7 days a week
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3 Coding question, mix of easy medium and hard questions. Online proctored on Hackerrank

Q1. 1. A variation on 2 sum problem (based on number of digits) 2. Average of node value and its subtree (Count no of nodes where average of the subtree and the node itself equals to the node value). It was t...read more
Ans. 
2 sum problem variation based on number of digits and finding nodes where average of subtree and node value equals node value.
• For the 2 sum problem variation, use a hash table to store the digits and their indices.

• For the subtree problem, use a recursive function to traverse the tree and calculate the average.

• Examples: [1, 2, 3, 4, 5] with target 7 and tree with root 5, left child 4, right child 6, should return 2 and
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Q1. I was asked an LLD question about a system to manage and track cars and their maintenance. Also some questions based on run time polymorphism and SQL
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Q1. Discussion with the CTO. You get to explain about the work you did and some clarifying questions.
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Q1. Write a program on stack operations
Ans. 
A program for stack operations
• Create a stack using an array or linked list

• Implement push() and pop() functions

• Check for stack overflow and underflow

• Implement peek() function to view top element

• Example: stack.push(5), stack.pop(), stack.peek()
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1 hour round, DSA questions on stacks and hash maps

1 hr round, DSA Q's and Puzzle