Coinbase interview experience Real time questions & tips from candidates to crack your interview
SDE - 1
Coinbase
3 rounds | 5 Coding
problems
Rejected
Interview preparation journey
Journey
When I joined college, I was unaware of this Data Structure and Algorithm, which made my journey to getting an internship way more complicated. From that point, I started doing questions on leetcode and code studio.
Application story
This company visited for the placement to my college i get to know about this company from my college placement cell.
Why selected/rejected for the role?
I was rejected because i was not able to provide a good approach to the DSA question which are being asked
Preparation
Duration: 4 Months
Topics: Data Structures, Pointers, OOPS, System Design, Algorithms, Dynamic Programming
Tip 1 : Practice from Leetcode, solve Leetcode medium level problems.
Tip 2 : Brush up computer fundamentals from subjects like OS, DBMS and CN.
Tip 3 : Have a good project or good internship experience and have in-depth knowledge regarding what you have done.
Application process
Where: Campus
Eligibility: Above 7 CGPA
Tip 1 : Do not even mention topics you have no idea about
Tip 2 : you should have some projects on resume and you should be able to explain clearly why you have chosen the particular project, what does it do, its functionality, outcomes and everything about each of the projects.
Tip 3 : Tailor your resume according to the needs/the role you are applying for
Interview rounds
01
Round
Easy
Video Call
Duration45 Minutes
Interview date15 Dec 2022
Coding problem2
1. Count Inversions
Moderate
40m average time
55% success
0/80
Asked in companies
For a given integer array/list 'ARR' of size 'N' containing all distinct values, find the total number of 'Inversions' that may exist.
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Problem approach
Firstly I gave him a brute force approach, then he asked me to give an optimal solution so I gave him an enhanced merge-sort solution.
2. Convert a binary tree to its sum tree
Easy
15m average time
85% success
0/40
Asked in companies
Given a binary tree of integers, you are supposed to modify the given binary tree to a sum tree where each node value is replaced by the sum of ...
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02
Round
Easy
Video Call
Duration60 Minutes
Interview date15 Dec 2022
Coding problem2
1. Maximum Frequency Number
Easy
10m average time
90% success
0/40
Asked in companies
Ninja is given an array of integers that contain numbers in random order. He needs to write a program to find and return the number which occurs the maximum times in the...
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2. Zigzag Binary Tree Traversal
Easy
10m average time
90% success
0/40
Asked in companies
You are given a ‘Binary Tree’.
Return the level-order traversal of the Binary Tree.
Example:
Input: Conside... View more
03
Round
Easy
HR Round
Duration60 Minutes
Interview date15 Dec 2022
Coding problem1
1. Basic HR Questions
What are your goals?
What motivates you to do good job?
Give me an example of your creativity.
How long would you expect to work for us if hired?
Here's your problem of the day 
Solving this problem will increase your chance to get selected in this company
What is the result of 4 % 2?
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