BNP Paribas Interview Questions, Process, and Tips

Lists and tuples are both data structures in Python, but lists are mutable while tuples are immutable.

• Lists are enclosed in square brackets [], while tuples are enclosed in parentheses ().

• Lists can be modified after creation, while tuples cannot be modified (immutable).

• Lists are typically used for collections of similar items, while tuples are used for fixed collections of items.

• Example: list = [1, 2, 3] and tuple = (4

The area of a room can be calculated by multiplying the length by the width.

• Calculate the area by multiplying the length and width of the room.

• For example, if the length of the room is 10 feet and the width is 12 feet, the area would be 120 square feet.

• Make sure to use the same units for length and width when calculating the area.

Getting caught cheating on a test in high school

• Was copying answers from a classmate during a test

• Teacher caught me and called me out in front of the whole class

• Felt embarrassed and learned my lesson about cheating

Use two threads to print odd and even numbers in sync

• Create two threads, one for printing odd numbers and one for printing even numbers

• Use synchronization mechanisms like mutex or semaphore to ensure output is in sync

• Example: Thread 1 prints odd numbers (1, 3, 5, ...) and Thread 2 prints even numbers (2, 4, 6, ...)

Find the largest common prefix among an array of strings.

• Iterate through the characters of the first string and compare with the corresponding characters of other strings.

• Stop when a mismatch is found or when reaching the end of any string.

• Return the prefix found so far.

Saga pattern is a design pattern used in microservices architecture to manage distributed transactions.

• Saga pattern breaks down a transaction into a series of smaller, independent steps.

• Each step in the saga is a separate transaction that can be rolled back if needed.

• If one step fails, compensating transactions can be executed to undo the changes made by previous steps.

• Saga pattern helps maintain data consistency in a ...read more

Hash map and hash set are data structures that use hashing to store key-value pairs and unique values respectively.

• Hash map uses key-value pairs where keys are hashed to find the corresponding value

• Hash set stores unique values using hashing to quickly check for duplicates

• Example: HashMap<String, Integer> map = new HashMap<>(); HashSet<Integer> set = new HashSet<>();

Singleton pattern ensures a class has only one instance and provides a global point of access to it.

• Singleton pattern involves a private constructor, a static method to access the instance, and a static variable to hold the instance.

• To break the singleton pattern, one can use reflection to access the private constructor and create multiple instances.

• Another way to break the singleton pattern is by using serialization a

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