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Lowe's Software Developer Interview Questions, Process, and Tips
Top Lowe's Software Developer Interview Questions and Answers
- Q1. Remove the Kth Node from the End of a Linked List You are given a singly Linked List with 'N' nodes containing integer data and an integer 'K'. Your task is to delete th ...read more
- Q2. House Robber Problem Statement Consider Mr. X, a professional robber who is planning to rob houses along a street. These houses are arranged in a circle, which means the ...read more
- Q3. Search min element in a rotated sorted array with duplicate elements
Lowe's Software Developer Interview Experiences
5 interviews found
Anonymous
Selected
I applied via Approached by Company and was interviewed in Oct 2024. There were 4 interview rounds.
2 DSA questions and some MCQ on Java and Spring
(2 Questions)
- Q1. Longest palindromic substring
- Ans.
A palindromic substring is a string that reads the same forwards and backwards.
Use dynamic programming to find the longest palindromic substring.
Start by considering each character as the center of a potential palindrome.
Expand outwards from each center to check for palindromes of odd and even lengths.
- Q2. Remove duplicates in place from a 1D array
- Ans.
Remove duplicates from a 1D array of strings in place
Iterate through the array and use a HashSet to keep track of unique elements
Replace duplicates with null or an empty string to remove them in place
(3 Questions)
- Q1. Project discussion
- Q2. Search min element in a rotated sorted array with duplicate elements
- Ans.
Search for the minimum element in a rotated sorted array with duplicate elements.
Use binary search to find the minimum element in the rotated sorted array.
Handle the case where duplicate elements are present by adjusting the search conditions.
Consider cases where the array is not rotated or contains only one element.
- Q3. Ways of declaring singleton class
- Ans.
A singleton class is a class that can only have one instance created throughout the application.
Declare a private static instance variable of the class
Create a private constructor to prevent external instantiation
Provide a public static method to access the instance
(2 Questions)
- Q1. Project discussion
- Q2. Behavioural questions
Skills evaluated in this interview
aniket alok
(2 Questions)
- Q1. Why string arr immutable
- Ans.
String arrays are immutable because they cannot be changed once created.
Strings in an array cannot be modified individually
Any changes to a string array result in a new array being created
Immutable arrays ensure data integrity and prevent unintended side effects
- Q2. How we can create a custom immutable class
- Ans.
To create a custom immutable class, use final keyword for class, private final fields, and no setter methods.
Use the final keyword for the class to prevent inheritance
Declare all fields as private and final to prevent modification
Do not provide setter methods for the fields to maintain immutability
Provide getter methods to access the fields
Selected
I applied via Job Portal
Basic java question, design questions, 1 data structure question
(3 Questions)
- Q1. Asked puzzle and previous project experience
- Q2. Monitor microservices using Spring actuator
- Ans.
Spring Actuator provides endpoints to monitor and manage microservices in a Spring Boot application.
Add Spring Boot Actuator dependency in pom.xml
Enable Actuator endpoints in application.properties or application.yml
Access Actuator endpoints like /actuator/health, /actuator/info, etc.
Customize Actuator endpoints using configuration properties
- Q3. How webflux works
- Ans.
Webflux is a reactive programming framework for building non-blocking, event-driven applications on the JVM.
Webflux is part of the Spring Framework and provides support for reactive programming.
It allows developers to build asynchronous, non-blocking applications that can handle a large number of concurrent connections.
Webflux uses Project Reactor, a reactive library for building reactive applications.
It supports both ...
Skills evaluated in this interview
I applied via Campus Placement and was interviewed in Mar 2024. There were 3 interview rounds.
Coding test contains 2 questions 1 moderate and 1 easy level
(1 Question)
- Q1. Asked about DSA,Heap sort,Merge sort.
(2 Questions)
- Q1. Tell me about yourself
- Ans.
I am a passionate software developer with experience in Java, Python, and web development.
Graduated with a degree in Computer Science
Worked on various projects using Java and Python
Familiar with web development technologies like HTML, CSS, and JavaScript
- Q2. Why Lowe's,how can Lowe's improve its customer services
- Ans.
I believe Lowe's is a reputable company with a strong focus on customer satisfaction. They can improve their customer services by implementing personalized recommendations, enhancing their online platform, and providing better in-store experiences.
Implement personalized recommendations based on customer preferences and purchase history
Enhance the online platform for easier navigation, product search, and checkout proce...
Lowe's interview questions for designations
I was interviewed before Sep 2020.
Round duration - 90 minutes
Round difficulty - Medium
(2 Questions)
Round duration - 60 minutes
Round difficulty - Medium
This was the technical round, held around at 10 AM IST on Google Meet.
Firstly she greeted me and asked me to tell something about myself, to which I introduced myself, explaining my academic and some projects also.
After that we moved on to the Hackathon project, which was smart cart self-checkout system. I explained the project along with the code, wherever necessary.
Every word you say while explaining should be clear to you.I used Firebase and SQL while explaining my project, to which she asked some questions related to it,
Then she moved to the DBMS part, types of joins,what is indexing, how to approach if you were to design a payment system.
At last she asked me some Data Structure questions, which were of medium complexity
- Q1.
Remove the Kth Node from the End of a Linked List
You are given a singly Linked List with 'N' nodes containing integer data and an integer 'K'. Your task is to delete the Kth node from the end of this Lin...
- Ans.
Remove the Kth node from the end of a singly linked list given the position 'K'.
Traverse the list to find the length 'N' of the linked list.
Calculate the position of the node to be removed from the beginning as 'N - K + 1'.
Traverse the list again and remove the node at the calculated position.
- Q2.
House Robber Problem Statement
Consider Mr. X, a professional robber who is planning to rob houses along a street. These houses are arranged in a circle, which means the first house is a neighbor to the l...
- Ans.
House Robber problem where adjacent houses have connected security system, find maximum money Mr. X can rob without triggering security.
Use dynamic programming to keep track of maximum money robbed at each house.
At each house, decide whether to rob the current house or skip it based on maximum money robbed so far.
Handle the circular nature of houses by considering two cases: robbing the first house and not robbing the ...
Round duration - 30 minutes
Round difficulty - Easy
The interviewer was very frank and cheerful. This was held at 2:30 PM IST on Google Meet.
He firstly greeted me and asked me how I was doing.
How was my previous round, any technical difficulties?
Then he asked me to introduce myself.
He started telling about his journey to Lowe's and his technical background.
Then he asked some HR related questions
Interview Preparation Tips
Tip 1 : Practice DSA questions, interview questions as much as you can.(400 leetcode questions) + (1000+ geeksforgeeks score) is good approximation of your preparation.
Tip 2 : You should have a good internship experience or 1 or 2 good projects on Android/web-d or Machine Learning.You should be through with your projects and be able to tell further improvements for the future.
Tip 3 : Be CONFIDENT with what you say. Don't murmur or speak in the mouth.The interviewer wants to know your thought process.
Tip 1 : Resume is the first impression of you.so it must be very eye-catching. write some decent (maybe 1 or 2 is enough) projects on resume.
Tip 2 : Should be through with each and every point you have written on your resume. people usually write 10- 15 skills on resume while confident in only 5.Please don't do it.
Skills evaluated in this interview
Get interview-ready with Top Lowe's Interview Questions
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Interview questions from similar companies
I was interviewed before Dec 2020.
(2 Questions)
Round duration - 60 Minutes
Round difficulty - Medium
There were 2 coding questions given in this round. One was related to Dynamic Programming and the second one was related to Recursion and Number Theory.
- Q1.
House Robber Problem Statement
Mr. X is a professional robber with a plan to rob houses arranged in a circular street. Each house has a certain amount of money hidden, separated by a security system that ...
- Ans.
House Robber problem where a robber wants to maximize stolen money without robbing adjacent houses in a circular street.
Use dynamic programming to keep track of maximum stolen money at each house.
Consider two cases: either rob the current house and skip the next, or skip the current house.
Handle circular arrangement by considering the first and last houses separately.
Example: For arr[] = {2, 3, 2}, the output is 3. Rob...
- Q2.
Nth Fibonacci Number Problem Statement
Calculate the Nth term in the Fibonacci sequence, where the sequence is defined as follows:
F(n) = F(n-1) + F(n-2), with initial conditionsF(1) = F(2) = 1.Input:
... - Ans.
Calculate the Nth Fibonacci number efficiently using dynamic programming.
Use dynamic programming to store and reuse previously calculated Fibonacci numbers.
Start with base cases F(1) and F(2) as 1, then calculate subsequent Fibonacci numbers.
Optimize the solution to avoid redundant calculations by storing intermediate results.
Time complexity can be reduced to O(N) using dynamic programming.
Example: For N = 5, the 5th F
(2 Questions)
Round duration - 50 Minutes
Round difficulty - Medium
Standard Data Structures and Algorithms round where I was given 2 questions to solve , one was from Linked List and the other was related to Priority Queue / Quick Sort .
- Q1.
Intersection of Linked Lists Problem Statement
You are provided with two linked lists,
L1andL2, both sorted in ascending order. Generate a new linked list containing elements that exist in both linked l... - Ans.
Given two sorted linked lists, find the intersection of elements in both lists and return a new sorted linked list.
Traverse both linked lists simultaneously to find common elements
Create a new linked list to store the intersecting elements
Ensure the final linked list is sorted in ascending order
Handle cases where there are no common elements between the lists
- Q2.
Kth Largest Element Problem Statement
Ninja enjoys working with numbers, and Alice challenges him to find the Kth largest value from a given list of numbers.
Input:
The first line contains an integer 'T... - Ans.
Find the Kth largest element in a given list of numbers.
Sort the array in descending order.
Return the Kth element from the sorted array.
Handle multiple test cases efficiently.
(2 Questions)
Round duration - 50 Minutes
Round difficulty - Easy
This round majorly focused on Real life appications of Data Structures and also revolved around Object Oriented Programming Style of writing code .
- Q1.
Data Structure with Insert, Delete, and GetRandom Operations
Design a data structure that supports four operations: insert an element, remove an element, search for an element, and get a random element. E...
- Ans.
Design a data structure with insert, delete, search, and getRandom operations, all in constant time.
Use a combination of HashMap and ArrayList to achieve constant time operations.
For insert operation, add the element to the ArrayList and store its index in the HashMap.
For delete operation, swap the element to be deleted with the last element in the ArrayList, update the index in the HashMap, and then remove the last el...
- Q2.
LRU Cache Design Question
Design a data structure for a Least Recently Used (LRU) cache that supports the following operations:
1.
get(key)- Return the value of the key if it exists in the cache; otherw... - Ans.
Design a Least Recently Used (LRU) cache data structure that supports get and put operations with capacity constraint.
Implement a doubly linked list to maintain the order of keys based on their recent usage.
Use a hashmap to store key-value pairs for quick access.
When capacity is reached, evict the least recently used item before inserting a new item.
Update the position of a key in the linked list whenever it is accesse
(2 Questions)
Round duration - 45 Minutes
Round difficulty - Medium
This round was inclined towards some Low Level Design Principles and some concepts from Java .
- Q1. Design a Railway Reservation System.
- Ans.
Design a Railway Reservation System
Create a database to store train schedules, seat availability, and passenger information
Implement a user interface for users to search for trains, book tickets, and view their reservations
Include features like seat selection, payment processing, and ticket confirmation
Handle scenarios like waitlisting, cancellations, and refunds
Ensure data security and privacy of passenger information
- Q2. Why is Java considered platform-independent while the Java Virtual Machine (JVM) is platform-dependent?
- Ans.
Java is platform-independent because the code is compiled into bytecode that can run on any platform with a JVM, which is platform-dependent due to its reliance on the underlying hardware and operating system.
Java code is compiled into bytecode, which can run on any platform with a JVM.
JVM acts as an interpreter that translates bytecode into machine code specific to the underlying hardware and operating system.
The JVM ...
Interview Preparation Tips
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
Skills evaluated in this interview
I was interviewed before Dec 2020.
(2 Questions)
Round duration - 90 Minutes
Round difficulty - Medium
This Round was DS and Algo round and it started with formal introduction, followed by 2 problems. We first dicussed the approach the time complexity and proper code covering all cases.
- Q1.
Minimum Cost to Buy Oranges Problem Statement
You are given a bag of capacity 'W' kg and a list 'cost' of costs for packets of oranges with different weights. Each element at the i-th position in the list...
- Ans.
Find the minimum cost to buy a specific weight of oranges using given cost list.
Iterate through the cost list and find the minimum cost to achieve the desired weight
Keep track of the minimum cost while considering available packet weights
Return -1 if it is not possible to buy exactly W kg of oranges
- Q2.
K - Sum Path In A Binary Tree
Given a binary tree where each node contains an integer value, and a value 'K', your task is to find all the paths in the binary tree such that the sum of the node values in ...
- Ans.
Find all paths in a binary tree where the sum of node values equals a given value 'K'.
Traverse the binary tree using DFS and keep track of the current path and its sum.
At each node, check if the current sum equals 'K' and add the path to the result if true.
Continue traversal to the left and right child nodes recursively.
Return the list of paths that sum up to 'K'.
(2 Questions)
Round duration - 40 Minutes
Round difficulty - Medium
This round majorly focused on puzzles and some questions revolving around Computer Networks and the projects in my resume .
- Q1. You have two wires of different lengths that take different times to burn. How can you measure a specific amount of time using these two wires?
- Ans.
Use two wires of different lengths to measure a specific amount of time by burning them simultaneously.
Burn both wires at the same time, one wire will burn faster than the other.
Measure the time it takes for the faster burning wire to completely burn.
Calculate the specific amount of time by using the ratio of the lengths of the two wires.
- Q2. You have 3 ants located at the corners of a triangle. The challenge is to determine the movement pattern of the ants if they all start moving towards each other. What will be the outcome?
(2 Questions)
Round duration - 30 Minutes
Round difficulty - Easy
This is a cultural fitment testing round .HR was very frank and asked standard questions. Then we discussed about my role.
- Q1. What do you know about the company?
- Q2. Why should we hire you?
Interview Preparation Tips
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
Skills evaluated in this interview
I was interviewed before Dec 2020.
(2 Questions)
Round duration - 90 minutes
Round difficulty - Medium
This was a proctured online coding round where we had 2 questions to solve under 90 minutes . The questions were of easy to medium level I would say with some lenghty implementations .
- Q1.
Minimum Numbers Required Problem Statement
Given an array
'ARR'consisting ofNintegers, along with two integers,'SUM'and'MAXVAL', you need to determine the minimum number of integers to be added to t... - Ans.
Determine the minimum number of integers to be added to an array to make its sum equal to a given value.
Iterate through the array and calculate the current sum.
Determine the difference between the target sum and the current sum.
Add the minimum number of integers within the range of -MAXVAL to MAXVAL to reach the target sum.
- Q2.
Maximum Sum Subsequence Problem Statement
Given an array of integers
NUMSconsisting ofNintegers and an integerK, determine the maximum sum of an increasing subsequence with exactlyKelements.Exampl...
- Ans.
Find the maximum sum of an increasing subsequence with exactly K elements in an array of integers.
Iterate through the array and maintain a dynamic programming table to store the maximum sum of increasing subsequences ending at each index.
For each element, check all previous elements to find the increasing subsequence with maximum sum ending at that element.
Update the dynamic programming table with the maximum sum found...
(2 Questions)
Round duration - 50 Minutes
Round difficulty - Medium
Standard Data Structures and Algorithms round . One has to be fairly comfortable in solving algorithmic problems to
pass this round with ease.
- Q1.
Check Whether Binary Tree Is Complete
You have been given a binary tree and your task is to determine if it is a Complete Binary Tree or not.
A Complete Binary Tree is defined as a binary tree where ever...
- Ans.
Check if a binary tree is a Complete Binary Tree or not based on given criteria.
Traverse the binary tree level by level and check if all levels are completely filled except the last one.
Ensure all nodes at the last level are positioned at the leftmost side.
Use level order traversal to check for completeness of the binary tree.
Example: For input 1 2 3 4 -1 5 6 -1 7 -1 -1 -1 -1 -1 -1, the output should be 1.
- Q2.
Consecutive Elements
Given an array
arrofNnon-negative integers, determine whether the array consists of consecutive numbers. Return true if they do, and false otherwise.Input:
The first line of inp... - Ans.
Check if an array of integers consists of consecutive numbers.
Iterate through the array and check if the absolute difference between consecutive elements is 1.
Sort the array and check if the elements are consecutive.
Use a set to store the elements and check if the size of the set is equal to the length of the array.
(2 Questions)
Round duration - 40 Minutes
Round difficulty - Medium
This round majorly focused on my projects and some standard questions revolving around Operating Systems and DBMS.
- Q1. How can you print numbers from 1 to 100 using more than two threads in an optimized approach?
- Ans.
Use multiple threads to print numbers from 1 to 100 in an optimized approach.
Divide the range of numbers (1-100) among the threads to avoid duplication.
Use synchronization mechanisms like mutex or semaphore to ensure proper order of printing.
Consider using a shared data structure like a queue to coordinate the threads.
Implement a mechanism to signal the threads when to start and stop printing.
- Q2. What are the advantages of using views in a database management system?
- Ans.
Views in a database management system provide data security, simplify complex queries, and improve performance.
Enhanced security by restricting access to certain columns or rows
Simplify complex queries by pre-defining joins and filters
Reduce redundancy by storing commonly used queries as views
Improve performance by storing pre-processed data in views
Allow for data abstraction, making it easier to work with complex data
(2 Questions)
Round duration - 30 Minutes
Round difficulty - Easy
This is a cultural fitment testing round .HR was very frank and asked standard questions. Then we discussed about my role.
- Q1. What do you know about the company?
- Q2. Why should we hire you?
Interview Preparation Tips
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
Skills evaluated in this interview
Selected
I applied via Campus Placement and was interviewed in Oct 2024. There were 3 interview rounds.
It was a combination of mcq and coding questions
mcq: aptitude + c++ + sql question, nothing really tough
Coding question: 3 leetcode question, medium level, of stack, binary search and graph traversal
(5 Questions)
- Q1. Question regarding project
- Q2. SQL basic to moderate question
- Q3. C++ coding question on strings recursion callback in c, oops medium level question, finding error in code
- Q4. Puzzles Q1-> cake cutting ( 3 cuts, 8 slices) Q2 ->9 bottles, 8 same weight bottles, 1 heavy, 2 tries using a balance
- Q5. OS question difference bw multi-processing and multi-programming how would u reduce number of page faults. etc
(3 Questions)
- Q1. Once again project explanation
- Q2. Basic to high level oops question:( C++) i was asked to write some class and in that these questions were asked 1: different types of access modifiers, but the question was asked indirectly. like why did...
- Q3. HR questions, since it was a semi technical cum hr round,
Interview Preparation Tips
I applied via Campus Placement
2 coding questions and a few MCQs
(1 Question)
- Q1. Asked to explain and optimise my solution from coding test
(1 Question)
- Q1. Behavioral round. Asked about resume.
(1 Question)
- Q1. General HR round and trying to find if you're a right fit for the company
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Lowe's Interviews By Designations
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Lowe's Software Developer Interview Process
based on 4 interviews
1 Interview rounds
- Coding Test Round
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