Mr Cooper Interview Questions and Answers for Freshers

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.

Golden rules in accounting are basic principles that guide the recording of financial transactions.

• There are three golden rules in accounting: Debit what comes in, Credit what goes out, Debit the receiver, Credit the giver, Debit expenses and losses, Credit income and gains.

• For example, when cash is received, it is debited as it comes in. When cash is paid out, it is credited as it goes out.

• Similarly, when goods are purchased on credit, the receiver is debited. When goods are...read more

Sorting a stack data structure and its real-life example

• Sorting a stack involves popping elements and comparing them to the remaining elements in the stack

• Real-life example: arranging books on a shelf in alphabetical order

• Another example: sorting a deck of cards by suit and rank