RisingWave interview experience Real time questions & tips from candidates to crack your interview
SDE - Intern
RisingWave
2 rounds | 4 Coding
problems
Selected Interview preparation journey
Journey
It was for internship so I prepared DSA for around 2 months and development in Python was asked so I went through all the basic concepts one week before the real interview.
Application story
It was an opening on LinkedIn, and I received a referral from one of the employees there, which allowed me to get an interview for the role directly.
Why selected/rejected for the role?
I was selected for this role due to my strong DSA knowledge and solid understanding of OOP. Additionally, my communication skills were very helpful since my interviewers were American.
Preparation
Duration: 2 months
Topics: DSA, Python, Dynamic Programming, Array, C++
Tip 1: Cover all the DSA topics thoroughly.
Tip 2: Try to learn the basics of Rust as well.
Application process
Where: Referral
Eligibility: No criteria, (Salary Package - 9 LPA)
Tip 1: Create a one-page resume.
Tip 2: Include all the relevant skills you have in your resume.
Interview rounds
01
Round
Medium
Video Call
Duration60 minutes
Interview date22 Jun 2022
Coding problem2
It was an online interview scheduled for around 3 in the afternoon.
1. Duplicate In Array
Easy
15m average time
85% success
0/40
Asked in companies
You are given an array ‘ARR’ of size ‘N’ containing each number between 1 and ‘N’ - 1 at least once. There is a single integer value that is present in the array twice. Your task is to find the duplicate integer value present in the array.
For example:
Consider ARR = [1, 2, 3, 4, 4], the duplicate integer value present in the array is 4. Hence, the answer is 4 in this case.
Note :
A duplicate number is always present in the given array.
Problem approach
Show your thought process to the interviewer.
Try to write the code in parts and explain it as you go.
2. Shortest Path
Moderate
25m average time
70% success
0/80
Asked in companies
How to find the shortest path between two elements in a graph.
Problem approach
Since it is a standard problem, try to explain the algorithm clearly.
Working code is always a plus.
02
Round
Medium
Video Call
Duration60 minutes
Interview date30 Jun 2022
Coding problem2
The technical round also focused on problem-solving skills and OOP basics. The interviewer was from China and very friendly.
1. Two Sum
Easy
10m average time
90% success
0/40
Asked in companies
You are given an array of integers 'ARR' of length 'N' and an integer Target. Your task is to return all pairs of elements such that they add up to Target.
Note:
We cannot use the element at a given index twice.
Follow Up:
Try to do this problem in O(N) time complexity.
Problem approach
I started with a brute-force solution, then moved on to a slightly optimized solution, and finally presented the most optimized solution.
2. OOPs Concept
What are the four pillars of OOPs? (Learn)
Here's your problem of the day 
Solving this problem will increase your chance to get selected in this company
Skill covered: Programming
What is recursion?
Choose another skill to practice
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