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Google Software Developer Interview Questions, Process, and Tips
Top Google Software Developer Interview Questions and Answers
- Q1. Painter's Partition Problem Statement Given an array/list representing boards, where each element denotes the length of a board, and a number ‘K’ of available painters, ...read more
- Q2. Special Numbers Problem Statement Your task is to find the total count of special numbers within a range from 1 to a given integer, 'MAXVAL'. A special number is defined ...read more
- Q3. Chocolate Distribution Problem You are given an array/list CHOCOLATES of size 'N', where each element represents the number of chocolates in a packet. Your task is to di ...read more
Google Software Developer Interview Experiences
88 interviews found
Anonymous
Interview Questionnaire
13 Questions
- Q1. Given a source array of integers with possible duplicates and a target integer, write algorithm to find out 2 numbers in source array whose sum is equal to target integer
- Ans.
Algorithm to find 2 numbers in an array whose sum is equal to a target integer
Use a hash table to store the difference between target and each element in the array
Iterate through the array and check if the current element exists in the hash table
Return the pair of elements that sum up to the target integer
- Q2. Say you have three tables WORK, USERS, MANAGERS WORK - work_id - user_id - how_much USERS - user_id - team MANAGERS - manager_id - team If I am a manager, write a select statement to retrieve the work o...
- Ans.
Write a select statement to retrieve work of all users who belong to my team.
Join USERS and WORK tables on user_id
Join MANAGERS and USERS tables on team
Filter by manager_id
- Q3. In a Chrome extension, which file contains the most important information of the extension like version, pattern matches, etc
- Ans.
The manifest.json file contains the most important information of a Chrome extension.
The manifest.json file includes the version number, permissions, content scripts, background scripts, and other important details.
It is located in the root directory of the extension.
It is required for all Chrome extensions.
Example: "manifest_version": 2, "version": "1.0", "permissions": ["tabs", "storage"]
- Q4. There are three rooms, and there are Princess, Flowers and Snake in those rooms. The doors of all the rooms have incorrect nameplates. i.e., the nameplate for the princess’ room is not Princess. Similarly,...
- Q5. Which is faster: finding an item in a hashtable or in a sorted list? And Why?
- Ans.
Hashtable is faster for finding an item than a sorted list.
Hashtable has constant time complexity O(1) for finding an item.
Sorted list has logarithmic time complexity O(log n) for finding an item.
Hashtable uses hashing to directly access the item's location.
Sorted list requires binary search to find the item's location.
Hashtable is ideal for large datasets with frequent lookups.
Sorted list is ideal for datasets that re
- Q6. What are some of the most popular Data interchange formats when using APIs
- Ans.
JSON and XML are the most popular data interchange formats when using APIs.
JSON (JavaScript Object Notation) is a lightweight format that is easy to read and write. It is widely used in web APIs.
XML (Extensible Markup Language) is a more complex format that is also widely used in web APIs.
Other formats include CSV (Comma Separated Values), YAML (YAML Ain't Markup Language), and Protocol Buffers.
- Q7. Name some popular APIs for each of these Social Commerce service(llike a photo service etc)
- Ans.
Popular APIs for Social Commerce services
Facebook Graph API for social media integration
Instagram API for photo sharing and tagging
Twitter API for real-time updates and customer engagement
Pinterest API for product discovery and sharing
Google Maps API for location-based services
PayPal API for secure payment processing
- Q8. How would you change the format of all the phone numbers in 1000 static html pages?
- Ans.
Use a script to iterate through each HTML page, locate phone numbers, and update their format.
Write a script using a programming language like Python or JavaScript to iterate through each HTML page
Use regular expressions to locate phone numbers in the pages
Update the format of the phone numbers as needed (e.g. adding country code, changing separators)
Save the updated HTML pages with the new phone number format
- Q9. If you had an opportunity to design the Google Suggest system, please let us know how you would approach it and how you would execute the plan in terms of settings up systems like(data stores or databases,...
- Ans.
Designing Google Suggest system
I would start by analyzing user search patterns and frequently searched keywords
Then, I would create a database of these keywords and their associated search results
I would use indexing services to quickly retrieve relevant results for each keyword
I would also implement machine learning algorithms to improve the accuracy of suggestions over time
- Q10. How do you find out if a number is a power of 2? And how do you know if it is an odd number? Write code in the language of your choice
- Ans.
Check if a number is a power of 2 and odd.
To check if a number is a power of 2, use bitwise AND operator with the number and its predecessor. If the result is 0, it is a power of 2.
To check if a number is odd, use modulus operator with 2. If the result is 1, it is odd.
Example code in Python:
def is_power_of_two(num):
return num & (num - 1) == 0
def is_odd(num):
return num % 2 == 1
- Q11. How will improve the revenue of the cafeteria of the office.
- Ans.
By introducing new menu items, optimizing pricing strategy, and improving the overall dining experience.
Conduct a survey to understand the preferences of employees
Introduce healthy and affordable meal options
Offer discounts for bulk orders or loyalty programs
Partner with local vendors to source fresh ingredients
Improve the ambiance and seating arrangements
Implement online ordering and delivery services
- Q12. [Actual question which i screwed up. Bad Time for me]Number of users in 2001 for adwords, chrome, gmail, android and picassa are in the ratio of 6:9:14:13:8, and in 2004 we add 3 lakh more users. New rati...
- Q13. In google adwords there are about 30 million ads from 42 lanuages . What will I do review the ads and reject ads that do not comply with specific rules
- Ans.
Reviewing 30 million ads from 42 languages in Google AdWords and rejecting non-compliant ads requires a systematic approach.
Create a set of specific rules and guidelines for ad compliance
Use automated tools to filter out ads that violate the rules
Assign a team of reviewers to manually check the remaining ads
Ensure that the reviewers are fluent in the languages of the ads they are reviewing
Regularly update the rules and...
Interview Preparation Tips
Experience: I was asked to take the test at 8.30 pm. They fixed this test, a week back. Nobody will call you to remind you to take test. Nor the interviewer will call you. It is your responsibility to check ur mail without fail. On that day I was expecting a call from google from evening till 8.25 pm. None called me. I thought that they would have forgot that. I planned to do go out and have food. But suddenly my ipad gave a alert message and it was from gmail app [thanks for ipad, or else i would not have checked my mail in lap top]. It was from google recruiter. The mail stated that he has shared a doc with me and i must answer the questions in it. a google drive link was given. he mentioned that the test was for 2 hours. I was asked to type answers just below each of these questions.
Duration: 120 minutes
Round: Technical Interview
Experience: Since I had prepared for tech interviews like amazon, I was able to do it good.After a week I got a call from HR and informed that I cleared the first round. Then after two days I was told that i will have a telephonic interview with one of the google developers from adwords team . They scheduled a telephonic interview the next week
Round: Technical Interview
Experience: 1) How will improve the revenue of the cafeteria of the office. Lots of discussions went and i think, i really did that well.
2)[Actual question which i screwed up. Bad Time for me]
Number of users in 2001 for adwords, chrome, gmail, android and picassa are in the ratio of 6:9:14:13:8, and in 2004 we add 3 lakh more users. New ratio is 8:12:13:11:6. Number of picassa users in 2004= 1,44,000. Calculate number of adwords users in 2005.A basic math question that, even a school student can solve. But in that tension i was not able to do it. I took some time and finally gave him a answer. I myself knew that it would be wrong. But interviewer said great lets move on to next question[just to boost up me - good person].My actual job role revolves around developing tools for the the ad review team which will review the ad and reject illlegal ones. So third question was related to that .He told me that as I am from a tech background, I need to explain him technically wat will I do. He also said that he did not need the actual solution. They will just see the way I approach the problem. That an existing problem and they are open to suggestions.3)In google adwords there are about 30 million ads from 42 lanuages . What will I do review the ads and reject ads that do not comply with specific rules .Regarding the criteria under which google bans a ad as illegal – I discussed about different criteria .Out of the criteria’s i told , he asked me to consider only three criteria .
a) Link not working
b) Drug related ads
c) trademarks[trademark used by the companies]I gave lot of approaches like for link not workinga) designing a autobot which will automatically click ads link and check whether it is redirecting to correct page or not . Autobots are used by hackers to get money for the ads they posted . I suggested that by designing similar autobot we can validate the link.b) to check drug related ads -
To detect the language we can first check the geographic location from which the ad is getting posted and can narrow down to some less choices from which we can detect the language
i suggested him that we can create a trie which some specific keywords (like coccaine ) and do pattern matching with that and reject the add it contains any of the works in trie .The interviewer gave me another constraint wat if there comes a ad “coccaine rehabilitation center” we should reject those kind of ads na . thats for a good cause . So i suggested him that i can maintain another set of trie which can contain those set of keywords.Fist check trie1 if drug related keywords exist .
Next check trie 2 if other types of keyword exist.
– if keyword only present in trie1 [reject ad]
– if both tire return true [can reject . but its better that those ad's alone can be subjected to manual evaluation for rejection].I used trie as it can do the pattern matches faster .For trademarks also I discussed using similar datastructures and the interviewer was ok with my answer.
General Tips: I applied for a job in Google jobs page. I know that its very difficult that a resume gets noticed by google.Suddenly one fine day i got a call from Google HR saying that they are interested in my profile and asked me if, i was ready to go with the interview process[Come on! who will say no for Google]. I was surprised.I was asked to take a initial screen test [Online test].
Skills: data structure, Algorithm
College Name: na
Skills evaluated in this interview
amazing childrens
(5 Questions)
- Q1. Introduce yourself
- Ans.
I am a software developer with 5 years of experience in Java, Python, and SQL.
5 years of experience in Java, Python, and SQL
Worked on developing web applications using Java Spring framework
Proficient in database management with SQL
- Q2. Array question of leetcode
- Q3. Python basic and medium
- Q4. C++ standard template library
- Q5. Dynamic programming questions
Adarsh Kumar
I applied via campus placement at Indian Institute of Technology (IIT), Jodhpur
(2 Questions)
- Q1. What is tree in data structure
- Q2. What is hashing in data structure
Interview Preparation Tips
What people are saying about Google
Selected
I applied via AmbitionBox and was interviewed in Apr 2024. There were 3 interview rounds.
An aptitude test is an exam used to determine an individual's skill or propensity to succeed in a given activity.
(4 Questions)
- Q1. Why is Java a platform independent language?
- Ans.
Java is platform independent due to its bytecode and JVM implementation.
Java code is compiled into bytecode, which can run on any platform with a Java Virtual Machine (JVM)
JVM acts as an interpreter, translating bytecode into machine code specific to the underlying platform
This allows Java programs to be written once and run anywhere, without the need for recompilation
- Q2. What are Static Binding and Dynamic Binding?
- Ans.
Static binding is resolved at compile time, while dynamic binding is resolved at runtime.
Static binding is also known as early binding, where the method call is resolved at compile time based on the type of the object.
Dynamic binding is also known as late binding, where the method call is resolved at runtime based on the actual type of the object.
Example of static binding: method overloading.
Example of dynamic binding:
- Q3. Explain Virtual Machine (JVM) architecture.
- Ans.
JVM is a virtual machine that enables a computer to run Java programs.
JVM is platform-independent and converts Java bytecode into machine code.
It consists of class loader, runtime data areas, execution engine, and native method interface.
JVM manages memory, garbage collection, and exception handling.
Examples of JVM implementations include Oracle HotSpot, OpenJ9, and GraalVM.
- Q4. What is the lambda expression in JAVA?
- Ans.
Lambda expression in JAVA is a concise way to represent a method implementation using a functional interface.
Lambda expressions are used to provide a more concise way to implement functional interfaces in JAVA.
They are similar to anonymous classes but with less boilerplate code.
Lambda expressions can be used to pass behavior as an argument to a method.
Syntax: (parameters) -> expression or (parameters) -> { statements;
(1 Question)
- Q1. Tell me something about yourself?
- Ans. Thank you for allowing me to introduce myself. My name is Sivaranjani and I am from Salem City in Tamilnadu. I completed my bachelor degree with the CSE branch from Muthayammal Engineering College. First of all, I want to introduce myself with my soft skills. I am optimistic, smart, self-confident, hardworking, and have a positive mindset. My technical skills include proficiency in Java programming language, C program...
Interview Preparation Tips
- Core Java
- Advanced Java
- MySQL
Skills evaluated in this interview
Google interview questions for designations
(2 Questions)
- Q1. Binary search on array
- Ans.
Binary search is a fast search algorithm that finds the position of a target value within a sorted array.
Ensure the array is sorted before performing binary search.
Compare the target value with the middle element of the array.
If the target value is less than the middle element, search the left half of the array. If it is greater, search the right half.
Repeat the process until the target value is found or the subarray i
- Q2. Multi source bfs on the array
- Ans.
Multi-source BFS on an array of strings involves finding the shortest path from multiple starting points to a target point.
Implement BFS algorithm to traverse the array of strings starting from multiple sources simultaneously.
Maintain a queue of nodes to visit next, and keep track of visited nodes to avoid revisiting.
Update the distance of each node from the sources as you traverse the array.
Example: Given an array of ...
Skills evaluated in this interview
Get interview-ready with Top Google Interview Questions
Avinash Kumar S S
I applied via Referral and was interviewed in Sep 2024. There was 1 interview round.
(2 Questions)
- Q1. Explain about your project in detail
- Ans.
Developed a web application for online shopping with user authentication and payment gateway integration.
Implemented user authentication using JWT tokens
Integrated Stripe API for payment processing
Designed responsive UI using React and Bootstrap
Utilized Node.js for backend development
- Q2. Asked to solve 2 leetcode hard problems
Ashish Soni
DSA hard of dp and tree and graph, segments
DSA medium questions were asked in the interview
(1 Question)
- Q1. DSA medium to hard
Test was conducted online on HAckerrank platform
(2 Questions)
- Q1. Sliding window , easy leetcode
- Q2. HASHMAP ,find the all buddy
- Ans.
A HashMap is a data structure that stores key-value pairs. To find all buddies in a HashMap, we need to iterate through the entries and compare values.
Iterate through the entries of the HashMap
Compare values to find buddies
Store buddies in an array of strings
Skills evaluated in this interview
(2 Questions)
- Q1. C++ is bad that java why?
- Ans.
C++ and Java have different strengths and weaknesses, it's not accurate to say one is 'bad' compared to the other.
C++ is closer to the hardware and allows for more low-level programming, while Java is more platform-independent and easier to learn.
C++ gives more control over memory management, but this can lead to more bugs if not handled properly.
Java has automatic garbage collection, making memory management easier fo...
- Q2. Why is google better than facebook?
- Ans.
Google is better than Facebook due to its focus on search and information retrieval.
Google's primary focus is on search and information retrieval, while Facebook is more focused on social networking.
Google's search algorithm is more advanced and accurate compared to Facebook's search functionality.
Google offers a wide range of services beyond social networking, such as Google Maps, Gmail, and Google Drive.
Google has a ...
Aditya Mishra
(1 Question)
- Q1. Palindrome of the number we have to return
- Ans.
Return the palindrome of a given number
Check if the number is equal to its reverse to determine if it is a palindrome
Convert the number to a string to easily reverse it
Handle negative numbers by converting them to positive before checking for palindrome
Interview Preparation Tips
(2 Questions)
- Q1. Tell about ursellf and experiences
- Q2. Coding program and complexity
- Ans.
Coding programs can vary in complexity depending on the requirements and functionalities needed.
Complexity can be measured using Big O notation, which describes the worst-case scenario for time and space complexity.
Factors affecting complexity include data structures used, algorithms implemented, and the size of input data.
Examples of complex programs include machine learning algorithms, large-scale distributed systems
(2 Questions)
- Q1. Dynamic pragramming backtracking coding
- Q2. Experinces and how you perform
- Ans.
I have over 5 years of experience in software development, with a strong focus on web applications and database management.
Developed web applications using HTML, CSS, JavaScript, and various frameworks like Angular and React
Proficient in database management with SQL and NoSQL databases such as MySQL and MongoDB
Experience in version control systems like Git for collaborative development
Strong problem-solving skills and ...
Skills evaluated in this interview
Google Interview FAQs
Some of the top questions asked at the Google Software Developer interview -
The duration of Google Software Developer interview process can vary, but typically it takes about less than 2 weeks to complete.
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Google Software Developer Interview Process
based on 106 interviews
3 Interview rounds
- Coding Test Round - 1
- Coding Test Round - 2
- Coding Test Round - 3
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