Shopify Software Developer Intern Interview Questions and Answers

45 minutes
arrays, strings,
SHL

• Q1. Find number of nodes in a tree and it's time complexity
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• Q2. What is abstraction and how do you implement it ??
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• Q1. What is the minimum number of coins to reach the target with the coins 1,2,5
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• Q2. Byte stream to human readable format without using library
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1hr mostly was c questions focusing on pointers, arrays and strings. Few logical questions were there too

2hrs, 5 questions. 1 easy and 4 medium. All leetcode type problems with arrays, strings and matrix

2hrs, simple application development like creating a backend for shopping application. Only simple functions like adding products, quantity, ordering, if quantity is not there then refuse the order and such. Was not asked for DB implementations.

• Q1. How to merge a list of sorted arrays in sorted order?
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• Q2. Simple discussions about oops, project etc
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• Q1. Self introduction for 2 mins
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• Q2. Why do you want to join Zoho?
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• Q3. What kinda word does Zoho do
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2 coding question were there and we need to solve eit in 45 minutes

• Q1. Asked a DSA questions
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• Q2. Some random question about project.
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OnCampus Test including DSA Questions

• Q1. Introduce yourself
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• Q2. DSA Question based on Dynamic Programming
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• Q1. Design a ridesharing service
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Round duration - 90 Minutes
Round difficulty - Easy

It was a telephonic round. The interview asked me these questions.
 

• Q1. Puzzle You have two ropes coated in oil to help them burn. Each rope will take exactly 1 hour to burn all the way through. However, the ropes do not burn at con...read more
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• Q2. Technical Questions

  1. Dynamic memory allocation for 2d array
  2. How polymorphism works in C++(Vptr and Vtable implementation)
   

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Round duration - 60 Minutes
Round difficulty - Medium

The interviewer started asking me questions. He gave me 2 problems. He was giving hints in case of any issues.
 

• Q1. Maximum Frequency Number 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 whi...read more
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• Q2. System Design Question There is an online catalog of songs (Like Saavn or Gaana). How you will show favorite songs every day to users. An efficient algorithm re...read more
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Round duration - 60 Minutes
Round difficulty - Medium

This was a technical interview. He gave me these questions one by one.
1. Again, how polymorphism works. Draw vtable and vptr
2. Producer consumer problem with synchronization
3. Difference between mutex, semaphore, and condition_variable.
4. Design parking lot system
5. Zigzag traversal of binary tree

• Q1. System Design Question

  Design parking lot system

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• Q2. Zigzag Binary Tree Traversal Given a binary tree, return the zigzag level order traversal of the nodes' values of the given tree. Zigzag traversal means sta...read more
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Round duration - 90 minutes
Round difficulty - Medium

1. He asked about the producer-consumer problem but I told him that the same question is asked in the previous round.
Then interviewer went asking lots of questions related to producer and consumer. Lots of discussions like what is a writer is not there and the only reader is there and you need to find out how many readers are currently reading from the buffer.
2. Discussions about C++11 features. How thread and async is different
3. Design your own shared_ptr(How you will handle ownership)
4. Check If the binary tree is symmetrical.
5. Find elements in a rotated sorted array and then optimize it.

• Q1. Tree Symmetricity You are given a binary tree, where the data present in each node is an integer. You have to find whether the given tree is symmetric or not. S...read more
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• Q2. Search In Rotated Sorted Array You have been given a sorted array/list ARR consisting of ‘N’ elements. You are also given an integer ‘K’. Now the array is rotat...read more
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Round duration - 90 minutes
Round difficulty - Easy

This round was scheduled for 9am in the morning. The test environment was pretty good . I didn't face any issues on the HireVeu platform. The first test was of Aptitude and then in next section it was Technical MCQ's. The level of questions were mid to high level of difficulty.

• Q1. DBMS Questions What is DML and DDL? Write an SQL query to print the FIRST_NAME from Worker table after replacing ‘a’ with ‘A’. Write an SQL query to print detai...read more
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Round duration - 60 minutes
Round difficulty - Medium

The exam was on the same Platform. The first question was about the most difficult Project I've worked on. I have to record a video in that particular platform and then move to the next questions. There was option for a demo video of 1 minute in which you can practice your answers and then can record your answer in the next video of max 5 minutes. The next 2 question were Coding Problems of moderate difficulty and you've to record your approach and then proceed towards solving the code and then record a video stating if you succeed or not and what better could you've done to make it work.

• Q1. Sum Of N Digit Palindromes You are given an integer 'N'. Your task is to return the sum of all N-digit numbers which are palindrome. A number is said to...read more
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Round duration - 45 minutes
Round difficulty - Medium

This round was scheduled for 3pm. The interviewer was quite friendly. He asked about me and told me to relax and then answer. He started with asking questions from my Project and how the ideas behind the Project. My Project was related to Deadlock So he asked whether I can implement my Project on any environment. I answered . Then one of my internship Project was related to Web development so He asked me about the backend of the Project. He gave me a few SQL queries and some general DBMS concepts based on the response about using Mysql in the Project. He asked me a few things about AWS and Cloud Computing which I answered. At last he asked some LINUX commands and corrected me once and was satisfied with my answers.

• Q1. OS Questions 1) What is Kernel? 2) What is Deadlock? 3) Why you use Binary semaphores instead of Counting Semaphores? 4) What is threads? What is hardware threa...read more
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• Q2. DBMS & Trees Questions

  1) Explain DDL VS DML.
  2) Explain Normalization
  3) B+ Trees and it's working.

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