# Link: https://leetcode.com/problems/concatenation-of-array/
from typing import List


class Solution:
    def getConcatenation(self, nums: List[int]) -> List[int]:
        # ans = [] * (len(nums) * 2)
        ans = nums + nums
        return ans


if __name__ == "__main__":
    nums = [2, 5, 1, 3, 4, 7]
    sol = Solution
    print(nums)
    print(sol().getConcatenation(nums))
    print("-" * 60)