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Leetcode medium to hard question
I applied via Company Website and was interviewed in Dec 2023. There was 1 interview round.
I applied via Walk-in and was interviewed in Dec 2023. There was 1 interview round.
What do you mean by AI
What people are saying about Google
I applied via Approached by Company and was interviewed in Apr 2022. There were 3 interview rounds.
What is your week point. Which make you emotional.
Google interview questions for designations
I applied via Approached by Company and was interviewed before Nov 2021. There were 8 interview rounds.
I dont know when it happened i think i missed it
I wrote hello world in machine language and they were surprised, one was willing to marry her daughter with me
Ahh the fun round it was a great experience obviously i won the GD as i was the only 1 in the room
I can barely solve my bro's 8th test paper but at least i put my roll number correct
Nah , never heard of this one before
A for loop is a control flow statement that repeatedly executes a block of code.
It has three parts: initialization, condition, and increment/decrement
It is used to iterate over a range of values or elements in an array
Example: for (let i = 0; i < 10; i++) { console.log(i); }
To create a HTML file, you can use a text editor to write the code and save it with a .html extension.
Open a text editor like Notepad, Sublime Text, or Visual Studio Code
Write your HTML code including tags like <html>, <head>, <title>, <body>
Save the file with a .html extension, for example index.html
Open the file in a web browser to view the HTML content
I applied via Naukri.com and was interviewed in Jan 2021. There were 3 interview rounds.
C# concepts including abstraction, interface, abstract method, abstract class, polymorphism, encapsulation, inheritance, and serialization.
Abstraction: hiding implementation details
Interface: defining a contract for behavior
Abstract method: method without implementation
Abstract class: class with one or more abstract methods
Polymorphism: ability of objects to take on multiple forms
Encapsulation: bundling data and behavi...
I was interviewed before Dec 2020.
Round duration - 60 Minutes
Round difficulty - Medium
This was a Data Structures and Algorithms round with preety good questions . I was expected to come up with an efficient approach and code it as well .
Your house is located at the origin (0,0) of a 2-D plane. There are N
neighbors living at different points on the plane. Your goal is to visit exactly K
neighb...
Find the K closest points to the origin in a 2-D plane using Euclidean Distance.
Calculate the Euclidean Distance of each point from the origin
Sort the points based on their distances
Return the first K points as the closest neighbors
Given a sorted array of 'N' integers, your task is to generate the power set for this array. Each subset of this power set should be individually sorted.
A power set of a set 'ARR' i...
Generate the power set of a sorted array of integers with individually sorted subsets.
Use recursion to generate all possible subsets by including or excluding each element in the array.
Sort each subset before adding it to the power set.
Handle base cases for empty array and single element array.
Ensure the subsets are unique by using a set data structure.
Time complexity can be exponential due to the nature of generating
Round duration - 50 Minutes
Round difficulty - Hard
This was also a DSA round where I was asked to code only one of the questions but I eventually ended up coding both as I had some spare time and explained my approches very smoothly to the interviewer . This round went preety well .
Convert a string representing a Roman numeral into its integer equivalent and return the result.
Roman numerals are represented by seven different symbol...
Convert a Roman numeral string to its integer equivalent.
Create a mapping of Roman numeral symbols to their integer values.
Iterate through the input string and add the corresponding integer values.
Handle cases where subtraction is needed (e.g., IV = 4, IX = 9).
You are given an integer array 'ARR' of size 'N' and an integer 'S'. Your task is to find and return a list of all pairs of elements where each sum of a pair equals 'S'.
Find pairs of elements in an array that sum up to a given value, sorted in a specific order.
Iterate through the array and for each element, check if the complement (S - current element) exists in a hash set.
If the complement exists, add the pair to the result list.
Sort the result list based on the criteria mentioned in the question.
Return the sorted list of pairs.
Round duration - 50 Minutes
Round difficulty - Medium
This was also a DSA round with 2 questions . One was implementation heavy and the other was related to recursion and so I handled it carefully so that my code does not run into TLE or Segmentation Fault.
You are provided with a string expression
consisting of characters '+', '-', '*', '/', '(', ')' and digits '0' to '9', representing an arithmetic express...
Evaluate arithmetic expressions in infix notation with given operators and precedence rules.
Parse the infix expression to postfix using a stack.
Evaluate the postfix expression using a stack.
Handle operator precedence and parentheses while evaluating.
Ensure no division by zero cases and operands fit in 32-bit integer.
You are given a sorted integer array ARR
of size N
. Your task is to remove the duplicates in such a way that each element appears only once. The outpu...
Remove duplicates from a sorted array in-place with O(1) extra memory.
Use two pointers - one for iterating through the array and another for placing unique elements.
Compare current element with next element to identify duplicates and skip them.
Update array in-place by moving unique elements to the front.
Return the length of the array after removal of duplicates.
Round duration - 50 Minutes
Round difficulty - Medium
This was a typical System Design round where I was asked about the various features of Facebook and what sort of data structures and algorithms are used in implementing them .
Facebook stores likes and dislikes using a combination of databases and algorithms.
Likes and dislikes are stored in databases such as MySQL or Cassandra.
Algorithms are used to analyze user behavior and recommend content based on likes and dislikes.
User interactions with posts, pages, and ads are tracked to determine likes and dislikes.
Likes and dislikes may also be used to personalize the user's feed and target ads mor
Facebook implements graph search using a graph database to efficiently search for connections between users and their interests.
Facebook uses a graph database to store connections between users, pages, groups, etc.
The graph search algorithm traverses the graph to find relevant connections based on user queries.
It takes into account factors like user relationships, interests, and interactions to provide personalized sea
Round duration - 50 Minutes
Round difficulty - Medium
This was a preety intense round as I was grilled more on my System Design concepts but eventually I was able to asnwers all the questions with some help from the interviewer.
Hadoop is a framework for distributed storage and processing of large data sets.
Hadoop is used for storing and processing big data across a distributed network of computers.
It is based on the MapReduce programming model, which allows for parallel processing of data.
Hadoop consists of HDFS for storage and YARN for resource management.
It is used for tasks like data warehousing, log processing, recommendation systems, and...
Facebook Chat works by using a combination of websockets, long polling, and push technology to deliver real-time messaging.
Facebook Chat uses websockets for real-time communication between the client and server.
Long polling is used to check for new messages when websockets are not supported.
Push technology is used to notify users of new messages even when the chat window is not open.
Messages are stored in a database an...
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
I was interviewed before May 2016.
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Interview experience
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