Walmart Interview Questions

Here in this post, we discuss the overall Walmart Interview Questions. Here in this post we cover Walmart  Interview Experience, Walmart coding questions and Walmart Frequently  asked Interview Questions 2021, and also we give details/guidance so that you can crack walmart Interview.

Below, we share an overall Interview Experience shared by some NIT/IIT students. Before going for any Interview, you need to go through the company details and some of company’s facts and figures. Here we give you a brief about the company, and  you can visit Walmart   careers page for more details.

Walmart Interview Questions

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ABOUT WALMART

Walmart Inc. is an American multinational retail corporation that operates a chain of hypermarkets, discount department stores, and grocery stores from the United States, headquartered in Bentonville, Arkansas.

Walmart Labs is an American subsidiary of Walmart in San Bruno, California. Their website earns revenue from advertising related to its categorization engine

EXCERPTS FROM STUDENT 1    walmart interview questions

BRANCH: CSE

JOB PROFILE: Software Engineer

WALMART  Interview Questions  / WALMART  Interview Experience 

Online Test OF WALMART : 25 MCQs and one coding question. The total time given was 60 minutes. 50 marks for the coding problem and 50 marks for MCQs.

First Round F2F(on zoom): It was to check the knowledge of core CS subjects such as CN, OS, DBMS and DSA. some of the questions were related to joins, indexing, DNS, process threads, deadlocks, Virtual memory, thrashing, etc.

At last, the interviewer asked me to run a coding problem – given two sorted arrays merge them with O(1) space complexity.

Second Round: It was to check the problem-solving skills.

WALAMRT INTERVIEW CODING QUESTIONS

1) Given a string let’s say “aabbcc” and an integer “k” let’s say 2 find the substring with maximum length having only “k” numbers of unique characters in it. Output examples – aabb, bbcc. After completing this the interviewer told me to generate all the possible combinations with “k” unique characters of any length.

2) Longest Common Subsequence. I used the DP approach and typed the function then he asked whether I can further optimize it and asked about the approach.

3) Puzzle – How do we measure forty-five minutes using two identical ropes, each of which takes an hour to burn?

4) Given a matrix of characters, for example, { {G, I, Z}, {F, E, K}, {O, R, E} } and a vector of strings let’s say { “GEEKZ”, “FOR”, “GEEKS”}. Find how many of these strings can be formed using the matrix by traversing only to the adjacent elements.

The interviewer examined the codes thoroughly and discussed complexities and edge cases for all the problems.

Third Round: This was the managerial round and the interviewer wanted to know how I approach problems so she asked a coding problem as well, the problem was “Stock Buy Sell to Maximize Profit”. She asked me about my participation in CP contests, the hardest coding problem I have ever solved, future study plans, projects done, areas covered, etc.

Fourth Round: It was the HR round, and it only lasted for about 20 minutes. Some HR WALMART questions were:

1) Tell me about yourself?

2) A brief explanation of the projects done.

3) Being a Non-Tech guy, I don’t know what Deep Learning is, could you explain it in a way that I can understand?

4) Being a North Indian, how do you manage in this place?

walmart virtual interview questions

WALMART INTERVIEW QUESTIONS AND WALMART INTERVIEW PROCESS

BRANCH: CSE

JOB PROFILE: Software Engineer

One writen (mcq+ 1 coding ) + 2 Technical rounds +1 Manegerial Round + 1 Hr Round.
Round 1:
The Round consisted of MCQ questions from aptitude, OS, DBMS and C programming and one Coding question-
a)25 MCQ questions

b)Question similiar to https://www.geeksforgeeks.org/length-smallest-sub-string-consisting-maximum-distinct-characters/

Round 2 FTF Technical round(60-70 min):-
He gave option to me to choose my favourite subject from co,os ,and RDBMS.
So he started asking question from os-(WALMART OS INTERVIEW QUESTIONS)

a) If there are 30 process then throughput is 45%, if we increse number of processes from 30 to 40 then throughput decreases to 35%. What may be the reason behind this.(Ans-Thrasing).
b)How to decrease thrashing.
c)Difference between 32 bit and 64 bit system.
d)Can we run 32 bit os on 64 bit system.
e) How much memory we can access with 32 bit system.
f) Is there any hack to access more than 4gb in 32 bit system.
g) Why there is no 128 bit system till now.
h)Give a real time deadlock scenario.
i) Difference between hold & wait and circular wait.

After this he started asking questions from Information Security-

a)What is Encryption
b)Symmetric and Asymmetric keys ,and how encryption is done using above two keys.
c)Difference between hashing and encryption.
d)while storing the password on server, we should use hashing or encryption.

After this, He started asking questions from DBMS(WALMART DBMS INTERVIEW QUESTIONS)

a)Why Normalization.
b)1-nf /2-NF
c)ACID Property
d)Difference between left outer join and left join.
After this he gave me two coding problems to write proper code on paper-

a)Middle Element of Linked List in single iteration .
b) Spiral order Traversal of a Matrix(with some modifiaction).

Round 3 FTF Technical round(40-50 min):-

Two coding Questions-(WALMART INTERVIEW CODING QUESTIONS)

a)Infix Expression Evaluation (Proper code) https://www.geeksforgeeks.org/expression-evaluation/

b)String (only logic but in O(n) time) https://codereview.stackexchange.com/questions/216327/given-an-integer-k-and-a-string-s-find-the-length-of-the-longest-substring-that

Round 3 FTF Manegerial round(50-60 min):-
It was a semiTechnical Round. As I was in company PPT so he explained all about company ,job role etc. Then he discussed all my projects in detail. As Java was mentioned in my resume,

so he started asking questions from java-(WALMART JAVA INTERVIEW QUESTIONS)

a)What is mutable/immutable String.
b)Why immutable string is used.
c) How String Literal get stored in special String pool.
d) In which cases garbage collector run.
e) Working of Hash Map in java https://www.geeksforgeeks.org/internal-working-of-hashmap-java/
f) Design Hash Map https://www.careercup.com/question?id=5115994033881088

Round 5:FTF HR round(10-15 min)(WALMART HR QUESTIONS)

a)Introduction
b)Family Background
c)Strength/Weakness.
d)About my summer Internship.
e)About Walmart.

 

walmart coding rounds

WALMART MUST DO CODING QUESTIONS

Below, we provide must do coding questions of Walmart/Walmart labs.

  • Climbing stairs (https://leetcode.com/problems/climbing-stairs/) LC Easy
  • Rotting Oranges (https://leetcode.com/problems/rotting-oranges/) LC Medium
  • Given an array of N integers. In one operation, you can pick a subarray of size K and add 1 to every element of that subarray. You can do almost P such operations. The task is to maximize the minimum element present in the array after performing P such operations. For eg. N=5,K=2,P=4 and array is [5,4,3,2,1] then its answer is 4. You can see this post: https://stackoverflow.com/questions/47264559/maximize-the-minimum-element
  • Given a string of 2N length consisting of only As and Bs. You can perform the following operation N times: choose two indices i,j (i<j) in the string and then change all the characters between them i.e change A to B and vice versa. Find the number of ways to make the string containing only As in the end. For eg. N=2, string = “BAAB” then number of ways to convert string to AAAA is 4.
  • Find the ancestor of given binary tree .Write a code and complexity.
  • Find the set of target sum from the array.
  •  Find common element in both the array.
  • Tribonacci Series- Print No of ways to take n-steps where you can either take 1 step, 2 steps or 3 steps. 3 Steps can only be taken at most k times.   
    1. You are given n cars, on each day a car gets destroyed if the paint on it is greater than the paint on the car on its immediate left. Find total days after which no car will get destroyed.
  • eg. [6,3,4,7,5] , so on the first day, cars with paint 4 and 7 will get destroyed. On day 2, a car with paint 5 will destroy. After this no car will be destroyed so the answer is 2
  • You are given n switches, each switch connected to a led. The cost of switch i is ci. initially all leds are on. When any switch is used, all LEDs in range [i-k,i+k] will get toggled off (on to off, off to on). Find minimum cost to switch off all leds.N<=10000, K<=1000, Ci<10^9
  • Maximum value obtained in stone game. https://leetcode.com/problems/stone-game-iii/
  • Similar to https://www.geeksforgeeks.org/maximum-value-array-m-range-increment-operations/
  • Josephus Problem
  • Jeanie’s Route 

WALMART FREQUENTLY ASKED HR  QUESTIONS

  1. Tell me about yourself.
  2. Have you got offer from another organization.
  3. Why do you want to join Walmart.
  4. She told me about what projects they work on. She told me about a system that estimates the time between 2 cities during a delivery. Then she asked me what do you think how we implement it. I gave my views related to graphs and shortest distance algorithms, considering factors like traffic and all. Then she asked me how to use Machine Learning in this context.
  5. What are things you are good at apart from technical skills.
  6. What are the things you are bad at.
  7. Why should we hire you?
  8. Rope burning puzzle:  https://kottke.org/06/11/rope-burning-logic-problem
  9. About Walmart.
  10. Tell me about your three personality traits, according to your friends/colleagues’ perspective.
  11. How do you react to a scenario where you as an intern got converted for full time but your close friend working with you got rejected?
  12. The Toughest Decisions are taken in life?
  13. Do you have any questions?

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WALMART FAQs OOPS INTERVIEW QUESTIONS ?

  • What do mean by OOPS.
  • What is inheritance.
  • What’s polymorphism
  • Whats polymorphism – compile and runtime
  • Write code to show run time polymorphism.
  • what is friend functions?

 

HOW TO CRACK WALMART INTERVIEWS?

I prepared from code forces, but that doesn’t really help when it comes to interviews by the companies. Most of them(there are always exceptions) uses questions from leetcode and if you are reading this one-two months before your placement season, just try to finish 30-40% medium + 10% Hard + 10% Easy questions on leetcode. Leetcode will give you all kind of variety and is very specific/good just for placement preparations.

For the coding rounds and technical interviews, solve various problems from leetcode, strengthening important concepts like DP, greedy, graph questions, etc. I also gave mock coding contests on leetcode which helped me for the actual coding rounds.

For interviews, I had to brush up on several important concepts like OS, OOPS, DBMS, etc. I used geeksforgeeks website to revise as I had already studied them in my academic curriculum. I also looked at common interview questions.

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EPSILON INTERVIEW QUESTION  2021

CISCO INTERVIEW QUESTION   AND INTERVIEW EXPERIENCE  2021

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CONCLUSION OF WALMART INTERVIEW QUESTIONS POST

Above er have discussed walmart interview question,walmart coding questions,walmart HR questions .If you liked it do share with your friends and aslo do comment to motivate us.

Thank you.

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