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Expedia Group Software Development Engineer Interview Questions and Answers

Updated 15 Jul 2024

Expedia Group Software Development Engineer Interview Experiences

2 interviews found

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-

I applied via Campus Placement

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - Coding Test 

1.5 hours long, platform was hackerearth.

Round 3 - Technical 

(1 Question)

  • Q1. Reverse a Linked List
  • Ans. 

    Reverse a linked list by changing the pointers direction.

    • Start with three pointers: current, previous, and next.

    • Iterate through the linked list, updating the pointers to reverse the direction.

    • Update the head pointer to the last node to complete the reversal.

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Practice medium level Leetcode questions regularly.

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
4-6 weeks
Result
Selected Selected

I applied via Approached by Company and was interviewed before Jul 2023. There was 1 interview round.

Round 1 - One-on-one 

(2 Questions)

  • Q1. Zigzag level order traversal of tree
  • Ans. 

    Zigzag level order traversal of tree involves traversing the tree level by level in a zigzag pattern.

    • Use a queue to perform level order traversal of the tree

    • Alternate between left to right and right to left traversal for each level

    • Store the nodes at each level in separate arrays

  • Answered by AI
  • Q2. Implementation of a vector
  • Ans. 

    A vector is a dynamic array that can resize itself as needed.

    • A vector is typically implemented using a dynamically allocated array.

    • It provides constant time access to elements using index.

    • Vectors can grow in size by reallocating memory when needed.

    • Example: vector vec;

    • Example: vec.push_back(10);

  • Answered by AI

Skills evaluated in this interview

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Interview Questionnaire 

17 Questions

  • Q1. Find if a string is substring of other string
  • Ans. 

    The function checks if a string is a substring of another string.

    • Use the built-in string methods like 'indexOf' or 'includes' to check for substring.

    • If the language supports regular expressions, you can also use them to find substrings.

    • Consider the case sensitivity of the strings when comparing.

  • Answered by AI
  • Q2. Write a code to multiply two matrices of dimension M*N and N*K
  • Ans. 

    Code to multiply two matrices of dimension M*N and N*K.

    • Create a result matrix of dimension M*K.

    • Iterate through each row of the first matrix.

    • For each row, iterate through each column of the second matrix.

    • For each element in the row of the first matrix, multiply it with the corresponding element in the column of the second matrix.

    • Sum up the products and store the result in the corresponding position of the result matrix.

    • ...

  • Answered by AI
  • Q3. Write a Sql to perform Matrix Multiplication.Two tables has three columns row,col and value
  • Ans. 

    SQL query to perform matrix multiplication using two tables with row, col, and value columns.

    • Use JOIN operation to combine the two tables based on matching row and col values.

    • Use GROUP BY clause to group the result by row and col values.

    • Use SUM function to calculate the dot product of corresponding row and col values.

    • Use INSERT INTO statement to insert the result into a new table.

  • Answered by AI
  • Q4. What is prototype in javascript?
  • Ans. 

    Prototype in JavaScript is an object that is associated with every function and object by default.

    • Prototype is used to add properties and methods to an object.

    • It allows objects to inherit properties and methods from other objects.

    • Modifying the prototype of a function affects all instances of that function.

    • Prototypes can be used to create new objects based on existing objects.

    • The prototype chain allows for property and

  • Answered by AI
  • Q5. How do we write classes in javascript?
  • Ans. 

    Classes in JavaScript are written using the class keyword.

    • Use the class keyword followed by the class name to define a class.

    • Use the constructor method to initialize class properties.

    • Add methods to the class using the class prototype.

    • Use the new keyword to create an instance of the class.

  • Answered by AI
  • Q6. There is a ladder of N steps.We can either take 1 step or 2 steps.In how many different ways one can climb the ladder?
  • Ans. 

    The number of different ways to climb a ladder of N steps by taking 1 or 2 steps at a time.

    • This is a classic problem that can be solved using dynamic programming.

    • The number of ways to climb N steps is equal to the sum of the number of ways to climb N-1 steps and N-2 steps.

    • The base cases are when N is 0 or 1, where there is only 1 way to climb the ladder.

    • For example, for N=4, there are 5 different ways: [1, 1, 1, 1], [1

  • Answered by AI
  • Q7. Print a square matrix in spiral order
  • Ans. 

    Print a square matrix in spiral order

    • Start by defining the boundaries of the matrix

    • Iterate through the matrix in a spiral pattern, printing each element

    • Adjust the boundaries after each iteration to move inward

    • Repeat until all elements are printed

  • Answered by AI
  • Q8. Given a table with 3 columns StudentName,Subject and Marks.Write a sql to retrieve second highest Marks Obtained for each student
  • Ans. 

    Retrieve the second highest marks obtained by each student from a table with student name, subject, and marks.

    • Use the RANK() function to assign a rank to each row based on the marks in descending order.

    • Filter the result to only include rows with rank 2 for each student.

    • Group the result by student name to get the second highest marks for each student.

  • Answered by AI
  • Q9. Given a Website with header,footer,side ads(Google ads,Internal ads).How will you extract only useful data from the page
  • Q10. Difference between .live() and .delegate() in jquery
  • Ans. 

    The .live() method attaches an event handler to the current and future elements, while .delegate() attaches an event handler to a parent element.

    • The .live() method is deprecated in newer versions of jQuery.

    • The .delegate() method is preferred over .live() for performance reasons.

    • Both methods are used to handle events for dynamically added elements.

    • Example: $(document).live('click', 'button', function() { ... });

    • Example:...

  • Answered by AI
  • Q11. What is chaining in jquery?
  • Ans. 

    Chaining in jQuery allows multiple methods to be called on a single element in a single line of code.

    • Chaining simplifies code and improves readability.

    • Each method in the chain operates on the result of the previous method.

    • The chain ends with a method that does not return a jQuery object.

    • Example: $('div').addClass('highlight').fadeOut();

  • Answered by AI
  • Q12. What is callback function?
  • Ans. 

    A callback function is a function that is passed as an argument to another function and is executed later.

    • Callback functions are commonly used in event-driven programming.

    • They allow asynchronous execution of code.

    • Callback functions can be used to handle responses from APIs or user interactions.

    • They can be anonymous functions or named functions.

    • Example: setTimeout(function() { console.log('Hello!'); }, 1000);

  • Answered by AI
  • Q13. What is .bind() function in jquery?
  • Ans. 

    The .bind() function in jQuery is used to attach an event handler function to one or more elements.

    • It allows you to specify the event type and the function to be executed when the event occurs.

    • The .bind() function can be used to bind multiple events to the same element.

    • It can also be used to pass additional data to the event handler function.

    • The .bind() function is deprecated in jQuery version 3.0 and above. It is reco

  • Answered by AI
  • Q14. Find the angle between hour handle and minute handle in a clock
  • Ans. 

    The angle between the hour and minute hands of a clock can be calculated using a formula.

    • The hour hand moves 30 degrees per hour and 0.5 degrees per minute.

    • The minute hand moves 6 degrees per minute.

    • Calculate the angle between the two hands using the formula: |30H - 11M/2|, where H is the hour and M is the minute.

  • Answered by AI
  • Q15. Is it possible to create slideshow without using javascript
  • Ans. 

    Yes, it is possible to create a slideshow without using JavaScript.

    • Use CSS animations and transitions to create the slideshow.

    • Use HTML and CSS to structure and style the slideshow.

    • Utilize keyframe animations to create the slide transitions.

    • Use radio buttons or checkboxes to control the slideshow navigation.

    • Apply the :target pseudo-class to create a simple slideshow without JavaScript.

  • Answered by AI
  • Q16. Questions about my current project and academic project
  • Q17. Given two points A and B with distance between them lets say D.there are N men who want to go from point A to point B.All men walk with same speed.They also have one scooter with them which has speed grea...
  • Ans. 

    The men can take turns riding the scooter, allowing them to reach point B faster.

    • The men can form a queue and take turns riding the scooter.

    • The person riding the scooter can drop it off at a certain point and the next person can pick it up.

    • The scooter can be passed along the line of men until everyone reaches point B.

  • Answered by AI

Interview Preparation Tips

Skills: Algorithm, Javascript
College Name: na

Skills evaluated in this interview

I was interviewed before Sep 2020.

Round 1 - Coding Test 

(2 Questions)

Round duration - 180 minutes
Round difficulty - Medium

The online test consisted of 2 coding questions, 30 aptitude MCQs, 30 behavioral MCQs and 10 code snippets to debug. The coding questions were of medium level, aptitude MCQs were easy and the code snippets to debug was also of easy level. Each section had a time constraint.

  • Q1. 

    Merge Two Sorted Linked Lists Problem Statement

    You are provided with two sorted linked lists. Your task is to merge them into a single sorted linked list and return the head of the combined linked list.

    ...
  • Ans. 

    Merge two sorted linked lists into a single sorted linked list without using additional space beyond constant space complexity.

    • Create a dummy node to start the merged list

    • Iterate through both linked lists and compare nodes to merge them in sorted order

    • Update the next pointers accordingly

    • Handle cases where one list is empty or both lists are empty

    • Return the head of the merged linked list

  • Answered by AI
  • Q2. 

    Minimum Path Sum Problem Statement

    Consider a 2-dimensional grid 'GRID' with 'N' rows and 'M' columns in Ninjaland. Each cell in the grid has an associated cost. The goal is to determine the minimum path ...

  • Ans. 

    The Minimum Path Sum Problem involves finding the minimum sum of costs along a path from the top-left to the bottom-right of a grid.

    • Use dynamic programming to calculate the minimum path sum by considering the costs of moving down or right at each cell.

    • Initialize a 2D array to store the minimum path sum values for each cell in the grid.

    • Iterate through the grid to calculate the minimum path sum for each cell based on the...

  • Answered by AI
Round 2 - Video Call 

(4 Questions)

Round duration - 60 minutes
Round difficulty - Medium

My interview was at 9:00 am. The interview was conducted on Amazon Chime and my webcam was on. The interviewer also asked me to write the code on a document which can be edited by both me and the interviewer. The difficulty of the questions was of medium level. I was asked 3 coding questions along with 2 questions related to OOPS at the end. The interview ended with the discussion of one of my projects. The interviewer was good and also gave me hints wherever required.

  • Q1. 

    Palindrome Partitioning Problem Statement

    You are given a string S. Your task is to partition S such that every substring of the partition is a palindrome. Your objective is to return all possible palindr...

  • Ans. 

    Given a string, partition it into palindromes and return all possible configurations.

    • Use backtracking to generate all possible palindrome partitions

    • Check if each substring is a palindrome before adding it to the partition

    • Return all valid partitions as an array of strings

  • Answered by AI
  • Q2. 

    Longest Increasing Subsequence Problem Statement

    Given an array of integers with 'N' elements, determine the length of the longest subsequence where each element is greater than the previous element. This...

  • Ans. 

    Find the length of the longest strictly increasing subsequence in an array of integers.

    • Use dynamic programming to solve this problem efficiently.

    • Initialize an array to store the length of the longest increasing subsequence ending at each index.

    • Iterate through the array and update the length of the longest increasing subsequence for each element.

    • Return the maximum value in the array as the result.

  • Answered by AI
  • Q3. 

    Find Missing Number In String Problem Statement

    You have a sequence of consecutive nonnegative integers. By appending all integers end-to-end, you formed a string S without any separators. During this pro...

  • Ans. 

    Find the missing number in a string of consecutive nonnegative integers.

    • Iterate through the string and check for missing numbers by comparing adjacent integers

    • If a missing number is found, return it as the output

    • Handle cases where there are multiple missing numbers or the string is invalid by returning -1

  • Answered by AI
  • Q4. What are the ACID properties in DBMS?
  • Ans. 

    ACID properties in DBMS ensure data integrity and consistency.

    • Atomicity: All operations in a transaction are treated as a single unit of work, either all succeed or all fail.

    • Consistency: Database remains in a consistent state before and after the transaction.

    • Isolation: Transactions are isolated from each other until they are completed.

    • Durability: Once a transaction is committed, the changes made by it are permanent and...

  • Answered by AI

Interview Preparation Tips

Professional and academic backgroundI completed Computer Science Engineering from Punjab Engineering College(Deemed To be University). Eligibility criteriaCandidate must be femaleAmazon interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, Graphs, Dynamic Programming, OOPS, Operating System, Database Management, C++,Computer Networks.Time required to prepare for the interview - 3 monthsInterview preparation tips for other job seekers

Tip 1 : You must have a grip over Data Structures and algorithms. Your concepts must be crystal clear. Pick one coding platform and try to practice at least 7-10 coding questions everyday. I completed around 200+ questions on Leetcode, 200+ questions on Geek For Geeks and around 30-40 questions on InterviewBit. 
Tip 2 : After attempting any coding problem, analyze its time and space complexity. See, if you can further optimize your solution. You can always check the editorials and compare your solution with it.
Tip 3 : Apart from coding questions keep studying concepts of Operating Systems, databases and object oriented programming. You can always refer to Geeks For Geeks articles for it. Also, Coding Ninja's Data Structures and algorithms course in C++ helped me a lot in improving my OOPS concepts specifically.

Application resume tips for other job seekers

Tip 1 : You do not need to have a long list of projects on your resume. One good project with proper knowledge of it will do good. Similarly, do not list down several number of skills. Few skills but roper knowledge of them are enough.
Tip 2 : Do not fake anything on your resume. The interviewer gets to know about it by asking questions. If you aren't able to answer, it leaves a negative impact.

Final outcome of the interviewSelected

Skills evaluated in this interview

I was interviewed before Sep 2020.

Round 1 - Coding Test 

(1 Question)

Round duration - 90 minutes
Round difficulty - Easy

This was MCQ+Coding round.

  • Q1. How can you check if two strings are anagrams of each other?
  • Ans. 

    Check if two strings are anagrams by comparing the sorted versions of the strings.

    • Sort both strings and compare if they are equal.

    • Use a hashmap to store the frequency of characters in each string and compare the maps.

    • Ignore spaces and punctuation when comparing the strings.

  • Answered by AI
Round 2 - Face to Face 

Round duration - 90 minutes
Round difficulty - Easy

This was face to face interview round.

Round 3 - Face to Face 

Round duration - 90 minutes
Round difficulty - Easy

This was face to face interview round.

Interview Preparation Tips

Professional and academic backgroundI completed Computer Science Engineering from National Institute Of Technology, Silchar, Assam. I applied for the job as SDE - 1 in SiddharthnagarEligibility criteria6 CGPAAmazon interview preparation:Topics to prepare for the interview - Basic Computer Science backgroundTime required to prepare for the interview - 6 monthsInterview preparation tips for other job seekers

Tip 1 : Participate in live contests on websites like Codechef, Codeforces etc as much as possible.
Tip 2 : Practice previous interview questions from LeetCode, GeeksForGeeks.
Tip 3 : Revise Computer Science subjects like DBMS, OOPS thoroughly.

Application resume tips for other job seekers

Add projects and Internships if you have done any and add only those things which you really know.

Final outcome of the interviewSelected

Skills evaluated in this interview

I was interviewed before Sep 2020.

Round 1 - Coding Test 

(1 Question)

Round duration - 90 Minutes
Round difficulty - Medium

Interview started at 11:00 am. It was an online round. During the coding round I submitted optimized solution and got full acceptance of the solutions.

  • Q1. 

    Detect Cycle in a Directed Graph

    You are provided with a directed graph composed of 'N' nodes. You have a matrix called 'EDGES' with dimensions M x 2, which specifies the 'M' edges in the graph. Each edge...

  • Ans. 

    Detect cycle in a directed graph using depth-first search (DFS) algorithm.

    • Use DFS to traverse the graph and detect back edges indicating a cycle.

    • Maintain a visited array to keep track of visited nodes during traversal.

    • If a node is visited again during traversal and it is not the parent node, then a cycle exists.

    • Return true if a cycle is detected, false otherwise.

  • Answered by AI
Round 2 - Face to Face 

(1 Question)

Round duration - 80 Minutes
Round difficulty - Medium

Interview started at 10:00 am. Interview went well, I was able to connect with the interviewer and enjoyed the whole interview

  • Q1. 

    Next Smallest Palindrome Problem Statement

    Find the next smallest palindrome strictly greater than a given number 'N' represented as a string 'S'.

    Explanation:

    You are given a number in string format, a...

  • Ans. 

    Find the next smallest palindrome greater than a given number represented as a string.

    • Convert the string to an integer, find the next greater palindrome, and convert it back to a string.

    • Handle cases where the number is a palindrome or has all digits as '9'.

    • Consider both odd and even length numbers when finding the next palindrome.

  • Answered by AI
Round 3 - Face to Face 

(1 Question)

Round duration - 80 Minutes
Round difficulty - Medium

Interview started at 11:00 am. Interview went well.

  • Q1. 

    Boundary Traversal of a Binary Tree

    Given a binary tree of integers, your task is to return the boundary nodes of the tree in Anti-Clockwise direction starting from the root node.

    Input:

    The first line ...
  • Ans. 

    Return the boundary nodes of a binary tree in Anti-Clockwise direction starting from the root node.

    • Traverse the left boundary nodes in a top-down manner

    • Traverse the leaf nodes from left to right

    • Traverse the right boundary nodes in a bottom-up manner

    • Handle cases where duplicates occur in the boundary nodes

    • Implement the function without printing as printing is already managed

  • Answered by AI

Interview Preparation Tips

Eligibility criteriaGood knowledge of Data Structures, Some great projects which are used by the usersAmazon interview preparation:Topics to prepare for the interview - Data Structures, Web development, System Design, Algorithms, Dynamic Programming, Database, OS, Networking, OOPS, DevOpsTime required to prepare for the interview - 8 monthsInterview preparation tips for other job seekers

Tip 1 : For Data Structures number of questions doesn't matter. Try to understand the logic behind them and try to apply them in creating multiple scenario's. Learn them by heart. 
Tip 2 : For Web.Development Try to learn full stack development. See which part interests you more, Increase your knowledge horizon, Always try to build a system a system considering It will be served to millions of customers. By doing this 1-2 projects will increase and cover all the major things which one should learn in their career/college.

Application resume tips for other job seekers

Tip 1 : Always try to make it a single page 
Tip 2 : Always make resume company specific. eg. Data Structures part more if you are applying for MNC's eg. Amazon, Google, DE Shaw, browserstack.

Final outcome of the interviewSelected

Skills evaluated in this interview

I was interviewed in Oct 2020.

Round 1 - Coding Test 

(2 Questions)

Round duration - 120 minutes
Round difficulty - Medium

Evening test around 5
Platform :- SHL
Environment was amazing

  • Q1. 

    Subtree of Another Tree Problem Statement

    Given two binary trees, T and S, determine whether S is a subtree of T. The tree S should have the same structure and node values as a subtree of T.

    Explanation:

    ...
  • Ans. 

    Given two binary trees T and S, determine if S is a subtree of T with the same structure and node values.

    • Check if the second tree is a subtree of the first tree by comparing their structures and node values.

    • Use a recursive approach to traverse both trees and check for equality.

    • Handle cases where one tree is null or the values do not match.

    • Return true if S is a subtree of T, false otherwise.

  • Answered by AI
  • Q2. 

    Search in a Row-wise and Column-wise Sorted Matrix Problem Statement

    You are given an N * N matrix of integers where each row and each column is sorted in increasing order. Your task is to find the positi...

  • Ans. 

    Given a sorted N*N matrix, find the position of a target integer X.

    • Iterate over each row and column to find the target integer X

    • Utilize the sorted nature of the matrix to optimize the search process

    • Return the position of X if found, else return -1 -1

  • Answered by AI
Round 2 - Video Call 

(2 Questions)

Round duration - 60 minutes
Round difficulty - Medium

1 Hour 
Afternoon

  • Q1. 

    Intersection of Linked List Problem

    You are provided with two singly linked lists containing integers, where both lists converge at some node belonging to a third linked list.

    Your task is to determine t...

  • Ans. 

    Find the node where two linked lists merge, return -1 if no merging occurs.

    • Traverse both lists to find their lengths and the difference in lengths

    • Move the pointer of the longer list by the difference in lengths

    • Traverse both lists simultaneously until they meet at the merging point

  • Answered by AI
  • Q2. 

    Problem: Pair Sum in a Binary Search Tree

    Given a Binary Search Tree (BST) and an integer 'S', your task is to find all pairs of nodes within the BST that total to 'S' and return these pairs. If no such p...

  • Ans. 

    Find pairs of nodes in a BST that sum up to a given value 'S'.

    • Traverse the BST in-order to get a sorted list of nodes.

    • Use two pointers approach to find pairs with sum 'S'.

    • Keep track of visited nodes to avoid using the same node twice in a pair.

  • Answered by AI
Round 3 - Video Call 

(2 Questions)

Round duration - 60 minutes
Round difficulty - Medium

Online Round held on Chime

  • Q1. 

    Is Binary Heap Tree Problem Statement

    You are given a binary tree of integers. Your task is to determine if it is a binary heap tree or not.

    Input:

    The first line of input contains an integer ‘T’ denoti...
  • Ans. 

    Determine if a given binary tree is a binary heap tree or not based on certain properties.

    • Check if the binary tree is a complete binary tree where every level, except the last level, is completely filled and the last level is as far left as possible.

    • Ensure that every parent node is greater than all its children nodes, forming a max-heap.

    • If any node does not have a left or right child, it should be represented as -1 in

  • Answered by AI
  • Q2. 

    Edit Distance Problem Statement

    Given two strings S and T with lengths N and M respectively, your task is to find the "Edit Distance" between these strings.

    The Edit Distance is defined as the minimum nu...

  • Ans. 

    The task is to find the minimum number of operations required to convert one string into another using delete, replace, and insert operations.

    • Use dynamic programming to solve the problem efficiently.

    • Create a 2D array to store the edit distances between substrings of the two input strings.

    • Fill up the array based on the minimum of three possible operations: insert, delete, or replace.

    • The final answer will be the value at...

  • Answered by AI

Interview Preparation Tips

Professional and academic backgroundI applied for the job as SDE - 1 in BangaloreEligibility criteriaNo backlogsAmazon interview preparation:Topics to prepare for the interview - Data Structures, OOPS, OS, DBMS, Dynamic Programming, Trees/Graph, Tries, Hashing, Algorithms, HadoopTime required to prepare for the interview - 4.5 monthsInterview preparation tips for other job seekers

Tip 1 : 1 Programming Language
Tip 2 : Practice Data Structures with atleast 300 ques.
Tip 3 : CS Fundamental

Application resume tips for other job seekers

Tip 1 : 1 Pager
Tip 2 : Add top 3 projects in Resume.

Final outcome of the interviewSelected

Skills evaluated in this interview

I was interviewed in Aug 2017.

Interview Questionnaire 

7 Questions

  • Q1. Implement Merge Sort.
  • Ans. 

    Merge Sort is a divide and conquer algorithm that sorts an array by dividing it into two halves, sorting them separately, and then merging the sorted halves.

    • Divide the array into two halves

    • Recursively sort the two halves

    • Merge the sorted halves

  • Answered by AI
  • Q2. Given a BST containing distinct integers, and a number ‘X’, find all pairs of integers in the BST whose sum is equal to ‘X’.
  • Ans. 

    Find pairs of integers in a BST whose sum is equal to a given number.

    • Traverse the BST and store the values in a hash set.

    • For each node, check if (X - node.value) exists in the hash set.

    • If yes, add the pair (node.value, X - node.value) to the result.

    • Continue traversal until all nodes are processed.

  • Answered by AI
  • Q3. Given a set of time intervals in any order, merge all overlapping intervals into one and output the result which should have only mutually exclusive intervals.
  • Ans. 

    Merge overlapping time intervals into mutually exclusive intervals.

    • Sort the intervals based on their start time.

    • Iterate through the intervals and merge overlapping intervals.

    • Output the mutually exclusive intervals.

    • Example: [(1,3), (2,6), (8,10), (15,18)] -> [(1,6), (8,10), (15,18)]

  • Answered by AI
  • Q4. What are the different types of hashing? Suggest an alternative and a better way for Linear Chaining.
  • Ans. 

    Different types of hashing and alternative for Linear Chaining

    • Different types of hashing include division, multiplication, and universal hashing

    • Alternative for Linear Chaining is Open Addressing

    • Open Addressing includes Linear Probing, Quadratic Probing, and Double Hashing

  • Answered by AI
  • Q5. Implement AVL Tree.
  • Ans. 

    An AVL tree is a self-balancing binary search tree where the heights of the left and right subtrees differ by at most one.

    • AVL tree is a binary search tree with additional balance factor for each node.

    • The balance factor is the difference between the heights of the left and right subtrees.

    • Insertion and deletion operations in AVL tree maintain the balance factor to ensure the tree remains balanced.

    • Rotations are performed ...

  • Answered by AI
  • Q6. Minimum number of squares whose sum equals to given number n.
  • Ans. 

    Find the minimum number of squares whose sum equals to a given number n.

    • Use dynamic programming to solve the problem efficiently.

    • Start with finding the square root of n and check if it is a perfect square.

    • If not, then try to find the minimum number of squares required for the remaining number.

    • Repeat the process until the remaining number becomes 0.

    • Return the minimum number of squares required for the given number n.

  • Answered by AI
  • Q7. Insertion sort for a singly linked list.
  • Ans. 

    Insertion sort for a singly linked list.

    • Traverse the list and compare each node with the previous nodes

    • If the current node is smaller, swap it with the previous node

    • Repeat until the end of the list is reached

    • Time complexity is O(n^2)

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: There were 2 coding questions (no penalty for wrong submission) and 20 Multiple Choice Questions(with negative marking). We were given 90 minutes to solve them. MCQs were based on Data Structures, OS, CN, C outputs, OOP etc.
Tips: Experience in Competitive Programming might help in solving coding questions. No constraints were mentioned and detailed Instructions related to problem were stated vaguely. So code carefully.
Duration: 1 hour 30 minutes
Total Questions: 22

Round: Technical Interview
Experience: The interviewer asked me to introduce myself and a brief introduction of the projects that I have done. She first asked me questions related to my project. After that she moved on to the data structures part.
Tips: Take your time to approach the problems and if the question is not clear ask the interviewer to explain it again.

Round: Technical Interview
Experience: The interviewer asked me about how my previous round went. After that, he asked me to introduce myself and a brief introduction of the projects that I have done. He first asked me a few questions related to my project. Then he moved on to the data structures part. In this round the interviewer gave me strict time limit for coding the solution on paper for each problem and as soon as I was done coding he gave me 2-3 minutes every time to find errors and debug my code.
Tips: Do not panic even if the interviewer sets time limit while solving problems. If the question is not clear ask the interviewer to explain it again.

College Name: The LNM Institute Of Information Technology, Jaipur

Skills evaluated in this interview

I applied via Naukri.com and was interviewed in Mar 2019. There were 5 interview rounds.

Interview Questionnaire 

9 Questions

  • Q1. Find shortest path to reach from one point to another in a 2d matrix. Link - -----/
  • Ans. 

    Shortest path in 2D matrix

    • Use BFS or Dijkstra's algorithm

    • Create a visited matrix to avoid revisiting cells

    • Keep track of distance and path

    • Consider obstacles or blocked cells

  • Answered by AI
  • Q2. Vertical order traversal of tree. Link - -----/
  • Ans. 

    Vertical order traversal of tree

    • Vertical order traversal means printing nodes of a binary tree in vertical order

    • We can use a map to store nodes at each horizontal distance from the root

    • Then we can traverse the map and print nodes in each horizontal distance

  • Answered by AI
  • Q3. Sliding window maximum. Link- -----/
  • Q4. Number of binary strings of length N, not containing consecutive 1s. Link: - -----/
  • Ans. 

    The number of binary strings of length N without consecutive 1s.

    • Use dynamic programming to solve the problem.

    • Create an array to store the number of valid strings for each length.

    • Initialize the array with base cases.

    • Iterate through the array and calculate the number of valid strings for each length.

    • Return the value at the Nth index of the array.

  • Answered by AI
  • Q5. Next greater permutation. Link:- -----/
  • Q6. LRU cache. Link:- -----/
  • Q7. Minimum time required to rot all oranges. Link:- -----/
  • Q8. A complete binary is defected because it has a level at which difference between heights of left and right subtree is more than 1. Find the first such level from top.
  • Ans. 

    Find the first level in a complete binary tree where the height difference between left and right subtrees is more than 1.

    • Traverse the binary tree level by level using breadth-first search

    • For each level, calculate the height difference between the left and right subtrees

    • Return the level number when the height difference is more than 1

  • Answered by AI
  • Q9. In last round only project related discussion.

Interview Preparation Tips

Interview preparation tips for other job seekers - I highly recommend practicing on InterviewBit, other sites are also good but I found this platform as most helpful.

Skills evaluated in this interview

I applied via Amazon websi and was interviewed in Aug 2020. There was 1 interview round.

Interview Questionnaire 

2 Questions

  • Q1. 1. DFS based question Find number of rotten tomatoes.
  • Ans. 

    DFS based question to find number of rotten tomatoes in an array of strings.

    • Implement DFS to traverse the array of strings

    • Check each element for rotten tomatoes

    • Keep track of the count of rotten tomatoes

  • Answered by AI
  • Q2. 2. Another question was baed on use of priority queue to find k nearest points to given robot.

Interview Preparation Tips

Interview preparation tips for other job seekers - Practice Data structure and algorithms througly especially graph algorithms.

Skills evaluated in this interview

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Expedia Group Interview FAQs

How many rounds are there in Expedia Group Software Development Engineer interview?
Expedia Group interview process usually has 2 rounds. The most common rounds in the Expedia Group interview process are Resume Shortlist, Coding Test and Technical.
How to prepare for Expedia Group Software Development Engineer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at Expedia Group. The most common topics and skills that interviewers at Expedia Group expect are Capacity Planning, Career Development, Data Analytics, Machine Learning and Mentoring.
What are the top questions asked in Expedia Group Software Development Engineer interview?

Some of the top questions asked at the Expedia Group Software Development Engineer interview -

  1. Zigzag level order traversal of t...read more
  2. Implementation of a vec...read more
  3. Reverse a Linked L...read more

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