30+ MAHLE Behr India Interview Questions and Answers

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 byte order of a multi-byte variable.

• Endianness can impact th...read more

Design a feature for ad publishers to define restrictions on ad content.

• Create a user-friendly interface for publishers to set their content restrictions.

• Allow publishers to select specific categories of restricted content (e.g. porn, alcohol, violence).

• Implement a keyword-based filtering system to identify restricted content.

• Provide an option for publishers to upload custom lists of restricted keywords.

• Offer a preview feature to show publishers how their restrictions will af...read more

Mobile advertising platform

• Adtech

• Mobile marketing

• App monetization

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 as a max heap [8, 5, 6, 3, 1, 4, 2]

An app to streamline ISB campus hiring process with a focus on reducing time-to-hire.

• Create a user-friendly interface for job postings and applications

• Incorporate a resume screening tool to filter out unqualified candidates

• Implement an interview scheduling feature to reduce scheduling conflicts

• Track time-to-hire as the North-star metric to measure success

• Expect a 20-30% improvement in time-to-hire with the launch of the app

Design a class for a math quiz game with random numbers, timer, score, and retry option.

• Create a class with two random number generators and a random mathematical operation

• Implement a timer and score tracker

• If user answers correctly, generate a new question, else allow user to retry

• Examples of mathematical operations: addition, subtraction, multiplication, division

• Examples of retry options: allow user to see correct answer or provide hints

The program takes a string as input and capitalizes the first letter of each reversed word while keeping the rest of the letters in lowercase.

• Split the input string into an array of words using the space as a delimiter

• Iterate through each word in the array

• Reverse the word and capitalize the first letter

• Join the modified words back into a single string with spaces in between

The program capitalizes the first letter of each reversed word in a sentence.

• Split the sentence into an array of words using space as a delimiter.

• Reverse each word in the array and capitalize the first letter.

• Join the modified words back into a sentence.

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.

A function to transform one string into another by changing one character at a time, ensuring each transformation results in a valid English word.

• Use a breadth-first search algorithm to explore all possible transformations

• Create a dictionary of valid English words to check against

• Track visited words to avoid repeating transformations

• Return the shortest path of transformations from the starting string to the target string

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.

To take the Rajasthani Shoe business from online to offline, a multi-channel approach can be adopted.

• Establish physical stores in key locations to increase accessibility and visibility.

• Collaborate with local retailers or distributors to expand the offline presence.

• Organize pop-up shops or participate in trade shows to showcase the products.

• Implement effective marketing strategies to create awareness about the offline stores.

• Offer personalized customer experiences and excellen...read more

Probability of a horse going out of a chessboard in 'n' steps.

• The total number of possible moves for a horse is 8.

• The probability of going out of the board depends on the position of the horse.

• For example, if the horse is at a corner, the probability of going out of the board is higher.

• The probability can be calculated using combinatorics and geometry.

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

Cyber security is the practice of protecting systems, networks, and data from digital attacks.

• Cyber security involves implementing measures to prevent unauthorized access, data breaches, and other cyber threats.

• It includes technologies, processes, and practices designed to protect networks, devices, programs, and data from attack, damage, or unauthorized access.

• Examples of cyber security measures include firewalls, antivirus software, encryption, and multi-factor authenticati...read more

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

The sort order algorithm for an e-commerce search page determines the arrangement of products based on relevance to the search query.

• The algorithm should consider factors like product popularity, customer ratings, and relevance to the search query.

• It should prioritize products that closely match the search query and have higher ratings or popularity.

• The algorithm can also take into account other factors like price, availability, and customer preferences.

• Examples of sorting cr...read more

Types of encryption include symmetric encryption, asymmetric encryption, and hashing.

• Symmetric encryption: Uses the same key for both encryption and decryption, examples include AES and DES.

• Asymmetric encryption: Uses a pair of public and private keys for encryption and decryption, examples include RSA and ECC.

• Hashing: Converts data into a fixed-size string of bytes, examples include MD5 and SHA.

Apple i-Pad is a success.

• The i-Pad has sold over 500 million units worldwide.

• It has revolutionized the tablet market and set the standard for other companies.

• The i-Pad has been used in various industries such as education, healthcare, and entertainment.

• Apple continues to release new and improved versions of the i-Pad, showing its success.

• The i-Pad has also contributed significantly to Apple's revenue and profits.

Print all paths from 0,0 to n,n in a matrix of n*n by increasing x or y coordinate.

• Use recursion to traverse through all possible paths

• At each step, check if moving right is possible, if yes, move right and add 'R' to path

• Similarly, check if moving down is possible, if yes, move down and add 'D' to path

• If current position is (n-1, n-1), print the path

• Backtrack to previous position and remove last added direction from path

Product market fit is the alignment between a product and its target market, where the product satisfies the market's needs.

• Product market fit is achieved when a product solves a real problem for a specific target market.

• It means that the product is in demand and customers are willing to pay for it.

• Product market fit is not a one-time event, it requires continuous validation and improvement.

• Examples of products with strong product market fit include iPhone, Airbnb, and Netfli...read more

Product management combines my passion for technology, problem-solving, and customer-centricity.

• I enjoy working with cross-functional teams to bring innovative products to market.

• Product management allows me to use my analytical skills to identify market opportunities and drive product strategy.

• I am motivated by the challenge of balancing user needs, business goals, and technical feasibility.

• I find satisfaction in seeing a product evolve from ideation to launch and making a p...read more

Remove all duplicates from a linked list of integers

• Traverse the linked list and keep track of seen values using a hash set

• If a value is already in the hash set, remove the node from the linked list

• Time complexity: O(n), Space complexity: O(n)

Inmobi is a leading global mobile advertising platform with a strong track record of innovation and success.

• Inmobi has a strong reputation in the mobile advertising industry

• They have a proven track record of innovation and success

• Inmobi offers a dynamic and fast-paced work environment

• The company values collaboration and encourages employee growth

• Inmobi provides opportunities to work with top-tier clients and cutting-edge technology

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

Different charts in Power BI have various use cases such as visualizing trends, comparing data, and highlighting outliers.

• Bar charts are useful for comparing data across categories.

• Line charts are great for showing trends over time.

• Pie charts can be used to show the proportion of each category in a dataset.

• Scatter plots are helpful for identifying relationships between two variables.

• Gantt charts are ideal for visualizing project timelines and dependencies.

High-level design for a Dropbox-like system

• Use a distributed file system to store files

• Implement a synchronization mechanism to ensure consistency across devices

• Use encryption to protect user data

• Implement a user authentication and authorization system

• Provide a web interface and mobile apps for easy access

• Consider scalability and fault tolerance

• Implement version control to allow users to revert to previous versions of files

Find if there is a triplet in a Balanced BST that adds to zero

• Traverse the tree in-order and store the values in an array

• Use three pointers to find the triplet that adds to zero

• Start with the first pointer at the beginning of the array and the other two at the end

• Move the pointers towards each other until the sum of the triplet is found or all combinations are exhausted

Find the first repeating element in an array of integers

• Create a hash table to store the frequency of each element

• Traverse the array and check if the element is already present in the hash table

• If yes, return the element as it is the first repeating element

• If no repeating element is found, return null

Query to find nth highest salary in SQL

• Use the ORDER BY clause to sort the salaries in descending order

• Use the DISTINCT keyword to eliminate duplicates

• Use LIMIT and OFFSET to get the nth highest salary

InMobi is a global mobile advertising and discovery platform that reaches over 1.5 billion unique mobile devices worldwide.

• Founded in 2007 in India

• Offers a range of advertising formats including video, native, and display ads

• Provides data-driven insights to help advertisers reach their target audience

• Has partnerships with major brands and publishers such as Uber, Samsung, and ESPN

• Headquartered in Bangalore, India with offices in several countries including the US and UK

Implement a queue using stack

• Use two stacks, one for enqueue and one for dequeue

• When enqueueing, push onto the enqueue stack

• When dequeueing, pop from the dequeue stack

• If the dequeue stack is empty, transfer all elements from enqueue stack to dequeue stack

Serialize and deserialize a binary tree.

• Serialize: Traverse the tree in pre-order and store the node values in a string with a delimiter.

• Deserialize: Split the string using the delimiter and create a new node for each value.

• Use a special character to represent null nodes.

• Recursively traverse the left and right subtrees to reconstruct the tree.

• Time complexity: O(n), Space complexity: O(n).

I plan to pursue a master's degree in computer science.

• Researching universities with strong computer science programs

• Preparing for GRE exam

• Networking with alumni and professors for recommendations

• Applying for scholarships and financial aid

• Considering online or part-time programs for flexibility

To add 3 linked lists, traverse each list and add the corresponding nodes, carry over the remainder to the next node.

• Traverse each list and add the corresponding nodes

• Carry over the remainder to the next node

• Handle cases where the lists are of different lengths

Polyfill of promise is a code that adds support for promises in older browsers.

• Polyfill is used to fill in the gaps in browser support for certain features.

• For promises, a polyfill can be used to provide support in older browsers that do not natively support promises.

• Popular promise polyfills include 'es6-promise' and 'bluebird'.