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

SDE - 2

Walmart

3 rounds | 5 Coding
problems

Interview preparation journey

Preparation

Duration: 3 Months

Topics: Data Structures, Algorithms, OOPs, DBMS, SQL, Web Development

Tip

Tip 1 : Do not rush into things. Learning takes time. Focus should be on the concepts and not just on leaving topics half-prepared. Devote 70% of both time and effort to DSA. I solved a total of around 500 questions on sites like GFG and Leetcode. Do not repeat similar questions just to increase the count of the number of questions

Tip 2 : Competitive Programming is a bonus and not a necessity, rather focus on core DSA based problems before trying CP. Do not pursue CP if you do not like it. Devote that extra time to core CS subjects and aptitude preparation.

Tip 3 : Projects play an important role too, do no ignore them. Try to get your hands dirty with a little bit of every field i.e., frontend, backend, and database.

Application process

Where: Campus

Eligibility: Above 7.5 CGPA in college

Resume tip

Tip 1 : Try to make a single-page resume. Highlight skills, projects, and work experience more than CGPA. Ensure proper spacing and font to maintain professionalism.

Tip 2 : Does not lie on a resume. Everything written on your resume must be known by you in and out.

Interview rounds

01

Round

Medium

Video Call

Duration45 Minutes

Interview date6 Jul 2022

Problems1

MCQ Challenge was to test basic computer fundamentals. The quiz had 30 questions to be attempted in 25 minutes consisting questions related to Data structures and algorithm, OOPS, OS, DBMS and some questions to find the output of Java Program.

1. Maximum Depth Of A Binary Tree

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Problem approach

You are given the root node of a binary tree with N nodes, whose nodes have integer values. Your task is to find the maximum depth of the given Binary tree.

Depth of a binary tree is the same as its height. In simpler terms, you have to find the total number of nodes encountered while moving from the root node to the farthest leaf node, along the longest path of the binary tree.

02

Round

Easy

Video Call

Duration45 Minutes

Interview date6 Jul 2022

Problems2

1. Maximum In Sliding Windows Of Size K

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Problem approach

Given an array/list of integers of length ‘N’, there is a sliding window of size ‘K’ which moves from the beginning of the array, to the very end. You can only see the ‘K’ numbers in a particular window at a time. For each of the 'N'-'K'+1 different windows thus formed, you are supposed to return the maximum element in each of them, from the given array/list.

2. String Transformation

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Problem approach

Given a string (STR) of length N, you have to create a new string by performing the following operation:

Take the smallest character from the first 'K' characters of STR, remove it from STR and append it to the new string.

03

Round

Easy

Video Call

Duration45 minutes

Interview date6 Jul 2022

Problems2

1. Maximum Number

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Problem approach

You are given an array of N elements. This array represents the digits of a number. In an operation, you can swap the value at any two indices. Your task is to find the maximum number by using operation at most once.

2. Equilibrium Index

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Problem approach

You are given an array Arr consisting of N integers. You need to find the equilibrium index of the array.

An index is considered as an equilibrium index if the sum of elements of the array to the left of that index is equal to the sum of elements to the right of it.

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