26 lines
851 B
Python
26 lines
851 B
Python
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# Your optional code here
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# You can import some modules or create additional functions
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def checkio(data: list) -> list:
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doublon = []
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for number in data:
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if data.count(number) > 1:
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doublon.append(number)
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return doublon
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# Some hints
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# You can use list.count(element) method for counting.
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# Create new list with non-unique elements
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# Loop over original list
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if __name__ == "__main__":
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# These "asserts" using only for self-checking and not necessary for auto-testing
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assert list(checkio([1, 2, 3, 1, 3])) == [1, 3, 1, 3], "1st example"
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assert list(checkio([1, 2, 3, 4, 5])) == [], "2nd example"
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assert list(checkio([5, 5, 5, 5, 5])) == [5, 5, 5, 5, 5], "3rd example"
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assert list(checkio([10, 9, 10, 10, 9, 8])) == [10, 9, 10, 10, 9], "4th example"
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print("It is all good. Let's check it now")
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