DUNNHUMBY IT SERVICES INDIA Senior Engineer Interview Questions and Answers

I would prefer to work from home (WFH) due to the convenience and flexibility it offers.

• WFH allows for a better work-life balance as there is no commuting time.

• It provides a comfortable and personalized work environment.

• WFH reduces distractions and interruptions from colleagues.

• It allows for increased productivity and focus.

• WFH promotes better health and well-being by avoiding exposure to office germs.

• It saves time and...read more

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.

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.

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