Mr Cooper Software Developer Interview Questions and Answers

The task is to find the minimum cost required to connect all the ropes by summing their lengths.

• Iterate through the ropes and connect the two shortest ropes at each step to minimize cost

• Use a priority queue to efficiently find the shortest ropes

• Keep track of the total cost as you connect the ropes

• Example: For input [4, 3, 2, 6], connect 2 and 3 (cost 5), then connect 4 and 5 (cost 9), then connect 9 and 6 (cost 15) for a total cost of 29

Check if a given matrix is idempotent by verifying if M * M = M.

• Iterate through the matrix and multiply it with itself to check if it equals the original matrix.

• If the condition M * M = M is satisfied, then the matrix is idempotent.

• If the condition is not satisfied, then the matrix is not idempotent.

Calculate and print the sum of least common multiples (LCM) for each integer from 1 to N with N.

• Iterate from 1 to N and calculate LCM of each number with N

• Add all the calculated LCM values to get the final sum

• Return the sum for each test case

Sort an array of 0s, 1s, and 2s in linear time complexity.

• Use three pointers to keep track of 0s, 1s, and 2s while iterating through the array.

• Swap elements based on the values encountered to sort the array in-place.

• Time complexity of the algorithm should be O(N) where N is the size of the array.

A fitness tracking application to monitor and track user's physical activities and progress.

• Include features like tracking steps, calories burned, distance traveled, and workout sessions.

• Allow users to set goals, view progress charts, and receive notifications for reminders.

• Integrate with wearable devices like Fitbit or Apple Watch for real-time data syncing.

• Provide social sharing options to motivate users and compete with friends.

• Include a variety of workout routines and exe...read more

A linked list is a data structure where each element points to the next element in the sequence.

• Consists of nodes connected by pointers

• Can be singly linked (each node points to the next) or doubly linked (each node points to the next and previous)

• Allows for dynamic size and efficient insertion/deletion operations