Pavna Goyam Auto Interview Questions and Answers

Calculate the rank of a matrix based on linearly independent column or row vectors.

• Determine the number of linearly independent column vectors or row vectors in the matrix.

• Use Gaussian elimination or row reduction to simplify the matrix and find the rank.

• The rank of a matrix is the maximum number of linearly independent vectors it contains.

Rearrange a list of numbers such that every second element is greater than its adjacent elements.

• Iterate through the array and swap elements if needed to satisfy the condition

• Keep track of the current and next elements to compare and swap

• Ensure that the swapped elements maintain the desired order

Check if two strings are permutations of each other.

• Create a character frequency map for both strings and compare them.

• If the frequency of characters in both maps is the same, return true.

• Handle edge cases like empty strings or strings of different lengths.

Design a vending machine that dispenses snacks and drinks.

• Include a variety of snacks and drinks such as chips, candy, soda, and water.

• Allow users to select items using a keypad or touchscreen interface.

• Accept payment through cash, credit/debit cards, or mobile payment apps.

• Dispense items once payment is confirmed.

• Provide options for refunds or exchanges in case of errors.

The current chairman of ISRO is K. Sivan.

• K. Sivan is an Indian space scientist and the current chairman of ISRO.

• He has been associated with ISRO for over three decades and has contributed to several missions.

• Under his leadership, ISRO has achieved several milestones, including the successful launch of Chandrayaan-2.

• He is also known as the 'Rocket Man' of India.