ICC-P Code pour exercice 2

from random import randint

def has_duplicates(l: list[int]) -> bool:
    ...

print(has_duplicates([]))               # False
print(has_duplicates([9, 3, 2, 5, 1])) # False
print(has_duplicates([1, 1]))           # True
print(has_duplicates([1, 2, 2, 3, 1, 5, 1])) # True

def find_duplicates(l: list[int]) -> list[int]:
    ...

print(find_duplicates([]))               # []
print(find_duplicates([1, 2, 3, 5, 9])) # []
print(find_duplicates([1, 1]))           # [1]
print(find_duplicates([1, 2, 2, 3, 1, 5, 1])) # [1, 2] ou [2, 1]