205. Concatenation of Array

Easy

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Input: nums = [1,2,1]

Output: [1,2,1,1,2,1]

Explanation: The array <code>ans</code> is formed by appending <code>[1,2,1]</code> twice, resulting in <code>[1,2,1,1,2,1]</code>.

Input: nums = [1,3,2,1]

Output: [1,3,2,1,1,3,2,1]

Explanation: The array <code>ans</code> is formed by appending <code>[1,3,2,1]</code> twice, resulting in <code>[1,3,2,1,1,3,2,1]</code>.

Time Complexity

N/A

Space Complexity

N/A