Discussion on: Daily Challenge #266 - Who Likes It?

[Andrea Stagi]

For Python

def who_likes_this(names: list) -> str:
    who = 'no one'
    number_of_likes = len(names)
    if number_of_likes > 0 and number_of_likes < 3 :
        who = ' and '.join(names)
    elif number_of_likes >= 3:
        who = ', '.join(names[:2])
        who += ' and ' + (names[2] if number_of_likes == 3 else f' and {len(names[2:])} others')
    return f'{who} like{"" if number_of_likes > 1 else "s" } this'

Test it:

print (who_likes_this([]))
print (who_likes_this(["Peter"]))
print (who_likes_this(["Jacob", "Alex"]))
print (who_likes_this(["Max", "John", "Mark"]))
print (who_likes_this(["Alex", "Jacob", "Mark", "Max"]))
print (who_likes_this(["Alex", "Jacob", "Mark", "Max", "Peter"]))

[Rafael Acioly]

Here's my version :)

from typing import List


def likes(names: List[str]) -> str:
  messages = {
    0: 'no one likes this',
    1: '%s likes this',
    2: '%s and %s like this',
    3: '%s, %s and %s like this'
  }

  message = messages.get(len(names))
  if not message:
    return '%s, %s and %d others like this' % (*names[:2], len(names) - 2)

  return message % tuple(names)