in codility you get 3 questions that you need to complete in 120 minutes 1. you get a string structure like a CSV, and you need to get a max number from a specific column 2. you get a list of bank transactions with date, there is a logic that you need to implement to get the balance and to calculate if you need to add fees 3. you need to seat a family inside a row of 10 seats on a plane with some constraints, the input is a list of occupied seats and number of rows in the plane, you need to return how many families of 4 people you can put in the plain

finding a circle in a linked list