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Algorithms for manipulating arrays and strings in coding
Use sorting algorithms like quicksort and mergesort for arrays
Use string manipulation functions like substring and replace for strings
Use dynamic programming for optimizing solutions to array and string problems
Designing a large scale Ad Server
Use distributed systems for scalability
Implement caching for faster ad delivery
Ensure high availability and fault tolerance
Use real-time bidding for efficient ad placement
Implement fraud detection mechanisms
Ensure compliance with privacy regulations
Maximum sub sequence sum in an array
Use Kadane's algorithm
Initialize max_so_far and max_ending_here to 0
Iterate through the array and update max_ending_here and max_so_far
Return max_so_far
Endianness refers to the byte order of a system. It determines how multi-byte data types are stored in memory.
Little-endian systems store the least significant byte first, while big-endian systems store the most significant byte first.
Endianness can affect the way data is transmitted between systems.
To determine the endianness of a system, you can use the byte order mark (BOM) or write a test program that checks the by...
Sort an array of 0's and 1's only.
Use two pointers, one at the beginning and one at the end of the array.
Swap 0's from the beginning with 1's from the end until the pointers meet.
Alternatively, use a counting sort algorithm to count the number of 0's and 1's and then reconstruct the array.
Heaps are data structures used to efficiently find the maximum or minimum element in a collection.
Max heap: parent nodes are always greater than or equal to child nodes
Min heap: parent nodes are always smaller than or equal to child nodes
Heaps are commonly used in priority queues and sorting algorithms
Heap operations include insert, delete, and extract max/min
Example: An array [3, 8, 2, 5, 1, 4, 6] can be represented a
Find 3 numbers in an array where a+b=c.
Loop through the array and check for all possible combinations of a and b.
Use a hash table to store the values of a and b, and check if c is present in the hash table.
Sort the array and use two pointers to find a and b, and then check if their sum equals c.
I applied via Campus Placement
I am an avid traveler and have visited over 20 countries
I love experiencing new cultures and trying new foods
I have backpacked through Europe and Asia
I have volunteered in orphanages in Cambodia and Nepal
Mobile advertising platform
Adtech
Mobile marketing
App monetization
I applied via Referral and was interviewed in Nov 2022. There were 6 interview rounds.
I am motivated to join this team because of the challenging work and the opportunity to learn and grow.
I am excited about the projects this team is working on and the potential impact they can have.
I am impressed by the team's expertise and collaborative approach.
I am looking for a supportive and innovative work environment where I can contribute my skills and knowledge.
I am eager to learn from my colleagues and develo...
I have worked on multiple projects including developing a new e-commerce platform and implementing a machine learning algorithm for fraud detection.
Developed a new e-commerce platform using React and Node.js
Implemented a machine learning algorithm for fraud detection using Python and TensorFlow
Collaborated with cross-functional teams to ensure project success
Improved website performance by optimizing code and reducing
Designing an IDE like VS code requires a deep understanding of software development and user experience.
Identify the target audience and their needs
Choose the programming languages and frameworks to support
Create a user-friendly interface with customizable features
Implement debugging and testing tools
Ensure compatibility with different operating systems
Continuously update and improve the IDE based on user feedback
The app architecture should be scalable, with a user-friendly interface and secure data storage.
The app should have a modular architecture to allow for easy scalability and maintenance.
The user interface should be intuitive and easy to navigate.
The app should have robust security measures in place to protect user data.
The app should be able to handle large amounts of data and traffic.
The app should be compatible with m...
CDN stands for Content Delivery Network. Browser works by sending requests to servers and receiving responses.
CDN is a network of servers that deliver content to users based on their geographic location.
CDN reduces latency and improves website performance.
Browser sends HTTP requests to servers and receives responses containing HTML, CSS, JS, and other assets.
Browser renders the received content and displays it to the u
You get 60 minutes to code an application in your choice of programming stack. Out of which 45 minutes are set aside for implementation and 15 minutes for problem discussion and conclusion.
Make sure that you think out loud while implementing the solution and not just silently coding.
I applied via Naukri.com and was interviewed in Apr 2024. There were 2 interview rounds.
I applied via LinkedIn and was interviewed in Sep 2022. There were 3 interview rounds.
2 coding , 2 SQL with some quants
Remove redundant parentheses in a expression
Identify the innermost parentheses
Evaluate the expression inside the innermost parentheses
Replace the innermost parentheses with the evaluated expression
Repeat until no more redundant parentheses exist
A coding test on hackerrank with some basic graph problems
2 Medium level DSA question
Use the exponentiation by squaring algorithm to optimally find n^m.
Use the exponentiation by squaring algorithm to reduce the number of multiplications needed.
Divide the exponent by 2 and recursively calculate the result.
Handle the cases when the exponent is even or odd separately.
Example: n^5 = n * n^2 * n^2
The edit distance problem involves finding the minimum number of operations required to transform one string into another.
The edit distance problem can be solved using dynamic programming.
Common operations include insertion, deletion, and substitution of characters.
Example: Given strings 'kitten' and 'sitting', the edit distance is 3 (substitute 'k' with 's', insert 'g', substitute 'n' with 'g').
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