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1.Football Points Task

Create a function that takes the number of wins, draws, and losses and calculates the number of points a football team has obtained so far.

  • Wins get 3 points
  • Draws get 1 point
  • Losses get 0 points

Examples:

  • football_points(3, 4, 2) ➞ 13
  • football_points(5, 0, 2) ➞ 15
  • football_points(0, 0, 1) ➞ 0

Notes:

  • Inputs will be numbers greater than or equal to 0.

2. Chat Room Status Task

Write a function that returns the number of users in a chatroom based on the following rules:

  • If there is no one, return "no one online".
  • If there is 1 person, return "user1 online".
  • If there are 2 people, return "user1 and user2 online".
  • If there are n > 2 people, return the first two names and add "and n-2 more online".

Examples:

  • chatroom_status([]) ➞ "no one online"
  • chatroom_status(["paRIE_to"]) ➞ "paRIE_to online"
  • chatroom_status(["s234f", "mailbox2"]) ➞ "s234f and mailbox2 online"
  • chatroom_status(["pap_ier44", "townieBOY", "panda321", "motor_bike5", "sandwichmaker833", "violinist91"]) ➞ "pap_ier44, townieBOY and 4 more online"

3. ATM PIN Code Validation Task

ATM machines allow 4 or 6 digit PIN codes and PIN codes cannot contain anything but exactly 4 digits or exactly 6 digits. Your task is to create a function that takes a string and returns True if the PIN is valid and False if it's not.

Examples:

  • is_valid_PIN("1234") ➞ True
  • is_valid_PIN("12345") ➞ False
  • is_valid_PIN("a234") ➞ False
  • is_valid_PIN("") ➞ False

Notes:

  • Some test cases contain special characters.
  • Empty strings must return False.