Expedia Group Software Development Engineer Interview Questions and Answers

All models should be made available or their complete information should be given in fresher training.

Q1. Social media marketing
Ans. Yes I have worked for a few months
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Q2. I don't have any questions, just get my work done.
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2 questions were given , one was easy, other one leetcode hard

Q1. What is a class, basic oops and sql concepts
Ans. 
A class is a blueprint for creating objects in object-oriented programming. Basic OOP concepts include encapsulation, inheritance, and polymorphism. SQL concepts include querying databases using SQL commands.
• A class is a template for creating objects with properties and methods.

• Encapsulation is the concept of bundling data and methods that operate on the data within a single unit.

• Inheritance allows a class to inherit p...read more
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Q2. What do you know about polymorphism
Ans. 
Polymorphism is the ability of a function or method to behave differently based on the object it is called with.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).

• Example: Inheritance in object-oriented programming languages like Java allows for polymorphism.

• Example: A met...read more
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Two questions

Q1. String based question to make a license number containing strings to be arranged in such a way that they are in the form of 4characters/numbers appended by a hyphen in between e.g. 1A3f5ygh78yu should beco...read more
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Q2. Number of islands questions
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Q1. Share details of your previous job.
Ans. 
I worked as a Software Development Engineer at XYZ Company.
• Developed and maintained software applications using Java and Python.

• Collaborated with cross-functional teams to gather requirements and design solutions.

• Implemented unit tests and performed code reviews to ensure code quality.

• Participated in Agile development processes and attended daily stand-up meetings.

• Troubleshot and resolved software defects and issues re...read more
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Q2. Why are you looking for a change?
Ans. 
Seeking new challenges and growth opportunities in software development.
• Looking for a change to expand my skill set and work on more complex projects.

• Seeking a company with a strong focus on innovation and cutting-edge technologies.

• Wanting to join a team that encourages collaboration and continuous learning.

• Desire to work in a more dynamic and fast-paced environment.

• Looking for better career prospects and advancement o
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Q3. Tell me about yourself.
Ans. 
I am a software development engineer with experience in building scalable and efficient applications.
• Proficient in programming languages like Java, C++, and Python

• Strong understanding of data structures and algorithms

• Experience in developing web applications using frameworks like Spring and Django

• Familiar with version control systems like Git

• Worked on projects involving database management and optimization

• Passionate ab...read more
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Ds and Algo, tree, array String

DS Algo, Tree Array grapH String

Q1. Behavioural questions
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Q1. 1 on DS Algo LC medium
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Q2. Behavioural questions
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1hr with two DSA questions, one is printing nth row of pascal triangle,
other I donot remember

Q1. Diagonal traversal of a binary tree
Ans. 
Diagonal traversal of a binary tree involves printing the nodes of the tree in a diagonal pattern.
• Start with the root node and move to its right child, then move down to its left child.

• Repeat this process for each diagonal of the tree, printing the nodes as you traverse.

• Use a queue to keep track of the nodes at each level of the tree.
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Q2. I donot remember
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Q1. Merge point of two inked lists which will be same from a node. (Linked List)
Ans. 
Find the merge point of two linked lists.
• Traverse both linked lists to find their lengths.

• Calculate the difference in lengths and move the pointer of the longer list by the difference.

• Traverse both lists in parallel until the merge point is found.
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Q2. Next greater element (Stack)
Ans. 
The Next Greater Element problem involves finding the next greater element for each element in an array.
• Use a stack to keep track of elements for which the next greater element is yet to be found.

• Iterate through the array and for each element, pop elements from the stack until a greater element is found.

• Store the next greater element for each element in a result array.
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Q1. Solve soduko puzzle(I have used backtracking)
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DSA and SQL leetcode questions

Q1. Explain the coding questions that you have solved
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Standard DS/Algo involving mostly trees and leadership principles

Q1. System Design Hotel
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Q2. Behavrioal questions
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