Interview Questions

Jatin S. - "A project charter is a formal document that authorizes a project and outlines its objectives, scope, stakeholders, and key details. It serves as an agreement among stakeholders and provides a clear foundation for the project by defining what needs to be done and why. Typically, the project sponsor issues the project charter to the project manager or team, formally initiating the project. A project charter typically includes the following key elements to ensure a comprehensive and clear unde"See full answer

Malvika S. - "Top three most important variables Uber could use to estimate the ETA for passenger pickup, beyond the ETA on Google Maps can be: Driver related - sometimes driver cancel rides after they are assigned or agree to pickup, especially at odd hours. Sometimes, they can also cancel midway through their journeys. Other factor can be that they drive slower or faster than google maps ETA. Car related - The car may be old or not maintained well than other cars. It can be CNG, Diesel, petrol or elec"See full answer

Personal W. - "Payment system requirement assumption: Need to be ACID Amount limitation - some validation for max input size can be done at client level/ API level. Need to store historic info - GDPR The information to be stored for database assumed can be structured so RDBMS like mysql or Postgres Notification requirement - if fail or success need to be text or email to user and or caller Scalable - Assumption that it deals with critical transaction so Availability and Scalability requirement i"See full answer

GalacticInterviewer - "Approach 1: Use sorting and return the kth largest element from the sorted list. Time complexity: O(nlogn) Approach 2: Use max heap and then select the kth largest element. time complexity: O(n+logn) Approach 3: Quickselect. Time complexity O(n) I explained my interviewer the 3 approaches. He told me to solve in a naive manner. Used Approach 1 had some time left so coded approach 3 also The average time complexity of Quickselect is O(n), making it very efficient for its purpose. However, in"See full answer

Aakanksha R. - "My answer- A. Clarifying questions- External factors- Timelines, Geography, Competition Internal factors- Meta's goals for entering into fitness space, full-fledged app or part of any existing Meta app Goals- Will go after engagement, since it is a new app. B. Identifying users- Heavily/ Professionally into fitness Casual fitness enthusiasts Not interested in fitness C. Prioritizing user segments- I will prioritize #2. Segment #1 does not really need external motivati"See full answer

Ying T. - "def encode(root): if not root: return [] def dfs(node): if not node: return res.append(node.val) res.append(len(node,children)) for child_node in node.children: dfs(child_node) res = [] dfs(root) return res def decode(arr): if not arr: return None n = len(arr) i = 0 def dfs(val, children_count): if children_count == 0: return Node(val) cur_node = Node(val) cur_node.children = [] for j in range(children_count): nonlocal i i += 2 cur_node.children.append(dfs(arr[i], arr[i"See full answer

Kartikeya N. - "Clarifying questions Are we referring to the credit card users of a particular card company or the overall number of users? : Overall number And we are referring to the number of unique users right, as in a person may have more than 1 card? : yes Can I assume the time setting of the question to be 2024? : Yes Thanks. Here's how I would approach this. India's total population = 1.4 Bn I know for a fact that in India only 2.5% of population pays income tax. A salaried employee who doe"See full answer

Jeremy D. - "Any cycle would cause the prerequisite to be greater than the course. This passes all the tests: function canFinish(_numCourses, prerequisites) { for (const [a, b] of prerequisites) { if (b > a) return false } return true } `"See full answer

Nilanjan D. - "Firstly, congratulations to both the interviewer and interviewee. This was a great learning experience However, being a Full Stack engineer and I was having the following suggestions around the Data Model - Driver & Approval can be two different tables Approval & Document - Approval can be a tuple of (userid,documentid) - comments against a rejection (marks the document which triggers rejection)In this way we can capture the entire history of approval workflow (initiate/pending/appr"See full answer

Evan R. - "The user table no longer exists as expected - I get an error that user does not contain user_id. Note that querying the table results in only user:swuoevkivrjfta select * FROM user `"See full answer

Soraya B. - "A load balancer, web application servers and a large database. Database is the core of the application containing the songs and tags related to each song. Application server will provide the search interface to find songs, play them and search them in specific categories or channels."See full answer

Tiago R. - "function isValid(s) { const stack = []; for (let i=0; i < s.length; i++) { const char = s.charAt(i); if (['(', '{', '['].includes(char)) { stack.push(char); } else { const top = stack.pop(); if ((char === ')' && top !== '(') || (char === '}' && top !== '{') || (char === ']' && top !== '[')) { return false; } } } return stack.length === 0"See full answer

Scott S. - " Functional Requirements Content Ingestion\: Ingest news articles from various sources (websites, social media, etc.). Handle different types of content (text, images, videos). Content Analysis\: Extract and preprocess text from articles. Analyze the content for potential indicators of fake news. Model Training and Prediction\: Use machine learning models to classify content as fake or real. Continuously improve models with new data and f"See full answer

Saket S. - "Agile processes have been a game changer for Software development projects from last 2 decades. But there are situations where Agile practices don't work very well and demand a workaround. Some of those scenarios are mentioned below: No Project Plan or Status reports: Agile Project team does not produce formal project plans or status reports unlike Traditional SDLC Projects. Sometimes it is hard to represent project status to senior executives who are interested in the overall status and risk"See full answer

Nidhi S. - "There are couple of reasons for it - Kind of role : Its a product manager role loaded with analytical work, So working with data in stringent regulatory guideline make it more exciting and thrilling. Location & industry is like - Cherry on the cake, Bangalore weather and BFI is at its all time peak as people spending behavior is changing continuously, it will be interesting to see big giants like visa are managing it."See full answer

Sridhar K. - "Back in 2019, I had to take a decision of firing an engineer as he was rude and abusive to one of my customers"See full answer

Daniel M. - "Should be able to charge the airpod case when pluged into energy. Should be able to charge when the airpod case has battery. Should be able to alert if the airpod case is out of battery. Should be able to sync with non-paired devices. Should be able to sync automatically with paired devices. Should be able to sync automatically with paired devices that are closer to the airpod. Should be able to switch the connection to a device answering a call. Should be able to pause during us"See full answer

Nagi E. - "Comprehend the situation: “When we say video streaming, do we mean watching videos such as movies and TV shows from devices using the internet?” Yes “Is it a fair assumption calling 65+ as seniors?” Yes “Any specific goal in mind?” Up to you “Timeline? constraints? “ None “Is this an extension of one of the existing streaming apps or a brand new one?” Brand new “Is there hardware needed for this app or will we be using the existing hardware and only developing the app?” You decide I’l"See full answer

Rafał P. - "def changeString(org: str,target:str) -> bool: lOrg = len(org) lTarget = len(target) \# They have to be equal in lenght if lOrg != lTarget: return False counter1 = Counter(org) counter2 = Counter(target) \# Counter internally iterates through the input sequence, counts the number of times a given object occurs, and stores objects as keys and the counts as values. if counter1 != counter2: return False diff = sum(org[i] != target[i] for i in range(n)) return diff == 2 or (diff == 0 and any(v > 1 f"See full answer