✅ | python3 | ONE LINE | FASTER THAN 99.6% | 🔥💪
\n\nclass Solution:\n    def getConcatenation(self, nums: List[int]) -> List[int]:\n        return nums * 2\n
\n```\nclass Solution:\n    def getConcatenation(self, nums: List[int]) -> List[int]:\n        return nums * 2\n```
['Array', 'Python', 'Python3']