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First solution in Clear category for Non-unique Elements by ninjagozhane
def checkio(a):
return list(filter(lambda i: a.count(i)>1,a))
print("Example:")
print(checkio([1, 2, 3, 1, 3]))
assert checkio([1, 2, 3, 1, 3]) == [1, 3, 1, 3]
assert checkio([1, 2, 3, 4, 5]) == []
assert checkio([5, 5, 5, 5, 5]) == [5, 5, 5, 5, 5]
assert checkio([10, 9, 10, 10, 9, 8]) == [10, 9, 10, 10, 9]
assert checkio([2, 2, 3, 2, 2]) == [2, 2, 2, 2]
assert checkio([10, 20, 30, 10]) == [10, 10]
assert checkio([7]) == []
assert checkio([0, 1, 2, 3, 4, 0, 1, 2, 4]) == [0, 1, 2, 4, 0, 1, 2, 4]
assert checkio([99, 98, 99]) == [99, 99]
assert checkio([0, 0, 0, 1, 1, 100]) == [0, 0, 0, 1, 1]
assert checkio([0, 0, 0, -1, -1, 100]) == [0, 0, 0, -1, -1]
print("The mission is done! Click 'Check Solution' to earn rewards!")
Jan. 9, 2023
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