Coinbase interview experience Real time questions & tips from candidates to crack your interview

# SDE

Coinbase
2 rounds | 3 Coding problems

## Interview preparation journey

Preparation
Duration: 3 months
Topics: Data Structures, Pointers, OOPS, System Design, Algorithms, Dynamic Programming
Tip

Tip 1 : OOPS - You should be well versed with basic OOPS principles
Tip 2 : You should be confident and have profound knowledge about the projects you worked on
Tip 3 : Basic DB concepts like joins, normalisation

Application process
Where: Campus
Eligibility: Above 7 CGPA
Resume tip

Tip 1 : Have some projects on resume.
Tip 2 : Do not put false things on resume.

## Interview rounds

01
Round
Easy
Video Call
Duration45 minutes
Interview date19 Nov 2022
Coding problem1

### 1. Max Product Subset

Moderate
15m average time
85% success
0/80

#### Since the product can be large, return it m...

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Problem approach

You are given an array/list ‘arr’ of size ‘n’. Your task is to find the maximum product possible by taking any subset of the array/list ‘arr’.

02
Round
Easy
Video Call
Duration45 minutes
Interview date19 Nov 2022
Coding problem2

### 1. Populating Next Right Pointers in Each Node

Moderate
25m average time
75% success
0/80

#### You need to find the ‘next’ node that is immediately right in the level order form for ea...

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Problem approach

You have been given a complete binary tree of ‘N’ nodes. The nodes are numbered 1 to ‘N’.
You need to find the ‘next’ node that is immediately right in the level order form for each node in the given tree.

### 2. Puzzle Question

Two wire burning puzzle.

Problem approach

If we light a stick, it takes 60 minutes to burn completely. What if we light the stick from both sides? It will take exactly half the original time, i.e. 30 minutes to burn completely.

1) 0 minutes – Light stick 1 on both sides and stick 2 on one side.
2) 30 minutes – Stick 1 will be burnt out. Light the other end of stick 2.
3) 45 minutes – Stick 2 will be burnt out. Thus 45 minu...

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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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