Walmart interview questions
Online test → Technical → Technical → Managerial → HR
CS fundamentals
Showing 20 of 396 reported in this area
Explain the difference between '==' operator and '.equals()' method in Java.
Explain garbage collection in Java.
Write an SQL query for a given table.
Explain the memory layout of a C program.
Explain the internal working of HashMap in Java
What happens when you type a URL in your browser?
Write an SQL query to transpose a matrix.
Explain cross join in DBMS.
What is the relational model in DBMS?
Explain the difference between JDK and JRE.
What are the differences between C and Java?
What are checked and unchecked exceptions in Java?
What is the difference between a process and a thread?
Define Object-Oriented Programming System (OOPS) concepts.
Explain the difference between Call by Value and Call by Reference
In C++, if a Derived class inherits from a Base class, and an object of Derived is destroyed, which destructor is called first?
Explain file operations in C++.
How is memory allocated in C++?
How is data stored inside a DBMS?
Why are there no pointers in Java?
DSA
Showing 29 of 371 reported in this area
Print the bottom view of a binary tree.
Generate all permutations of a given string.
Perform spiral order traversal of a binary tree.
Detect a loop in a linked list.
Reverse a linked list in groups of size k
Generate all possible permutations of a string.
Count the number of inversions in an array in less than O(n^2) time complexity.
Check whether two strings are equivalent when one is an abbreviation of the other (case-insensitive), e.g., Internationalization and I18n.
Find the maximum sum submatrix in a given matrix.
Reverse a linked list
Reverse a singly linked list.
Reverse the words in a given string.
Check whether a linked list is a palindrome.
Check whether two given strings are anagrams.
Search for a given key in a Binary Search Tree.
Print Pascal’s Triangle for a given number of rows.
Find the maximum repeating (maximum occurring) number in an array
How do you insert and delete an element from a doubly linked list?
Write a program to find all prime numbers between two given numbers.
Detect a loop in a linked list and return the starting node of the loop
Find the length of the subarray with the longest consecutive 1s in a binary array
Find the second largest element in an array in a single iteration without using extra space
Write code and explain inorder, preorder, and postorder traversals of a Binary Search Tree.
Flatten a linked list
Clone an undirected graph.
Build a tree data structure
Solve problems on Binary Trees
Swap K nodes in a linked list.
Spiral traversal of a binary tree
System design
Showing 3 of 34 reported in this area
Design an elevator system.
Design a URL Shortener service
Design a URL shortening system.
Behavioural
Showing 3 of 30 reported in this area
Describe one of the toughest decisions you have taken in your life.
How would you resolve conflicts when teammates do not agree on something?
How would you react if you were converted from intern to full-time but a close friend working with you was rejected?
Puzzles
Showing 3 of 23 reported in this area
Three bulbs and three switches puzzle.
A mathematical puzzle related to time and velocity concepts.
Solve the puzzle: ABCD × 4 = DCBA, where ABCD is a 4-digit number.
Aptitude
Showing 2 of 5 reported in this area
Solve aptitude questions based on percentage, profit and loss, and probability.
Given a range of integers, find all prime numbers in that range and determine which digit occurs the maximum number of times across all those prime numbers.
Showing 60 of 676 questions. Ranked by how often the same question came back across reports.
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What questions does Walmart ask?
Candidate interview reports most often cover CS fundamentals (46%) and DSA (43%).
How many rounds does Walmart interview have?
Candidate interview reports show an average of 3.8 rounds per experience, with a typical sequence of Online test → Technical → Technical → Managerial → HR. Individual interview paths can vary.
Is the Walmart interview hard?
Among questions with a reported difficulty, the mix is easy 37%, medium 55%, hard 8%.