Walmart Senior Software Engineer Interview Questions, Process, and Tips

Q1. DSA question mostly coding
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Round duration - 60 Minutes
Round difficulty - Hard

They have asked to write Java programs for finding list of angrams present in an array nd some of api response codes nd there uses plus various rest methods nd their differences

Q1. 
Find All Anagrams Problem Statement
Given a string STR and a non-empty string PTR, identify all the starting indices of anagrams of PTR within STR.
Explanation:
An anagram of a string is another string ...read more
Ans. 
Given a string STR and a non-empty string PTR, find all starting indices of anagrams of PTR within STR.
• Create a frequency map of characters in PTR.

• Use sliding window technique to check anagrams in STR.

• Return the starting indices of anagrams found.
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Round duration - 60 Minutes
Round difficulty - Medium

It was dynamic programming round have been asked Java programs

Q1. 
Sum of Digits Problem Statement
Given an integer 'N', continue summing its digits until the result is a single-digit number. Your task is to determine the final value of 'N' after applying this operation ...read more
Ans. 
Given an integer, find the final single-digit value after summing its digits iteratively.
• Iteratively sum the digits of the input integer until the result is a single-digit number

• Output the final single-digit integer for each test case

• Handle multiple test cases as input
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Round duration - 60 Minutes
Round difficulty - Medium

Have been asked to explain existing projects and what extraordinary you have done

Q1. What extraordinary accomplishments have you achieved in your current company?
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Data structures and algorithms

Q1. System Design specific to domain
Ans. 
System design specific to domain
• Understand the domain and its requirements

• Identify the key components and their interactions

• Choose appropriate technologies and architecture

• Consider scalability and maintainability
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Q2. Design uber both rider and driver apps
Ans. 
Designing Uber apps for both riders and drivers
• For the rider app, focus on ease of use and quick booking process

• For the driver app, focus on real-time updates and navigation

• Both apps should have a rating system and payment integration

• Implement features like surge pricing, ride history, and in-app messaging
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Q1. Hiring Manager Technical discussion about overall fit.
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Q1. Understanding expectation
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Q1. Language specific interview questions
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Q1. High level system design
Ans. 
High level system design involves creating an abstract representation of a system's architecture.
• Identify the system's components and their interactions

• Define the system's boundaries and interfaces

• Consider scalability, reliability, and maintainability

• Use diagrams and models to communicate the design
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Q1. Data structures round interview
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