Leetcode Problem 1929. Concatenation of Array

1929. Concatenation of Array

Leetcode Solutions

Simple Iterative Approach

Determine the length of the input array nums and create a new array ans of length 2 * n.
Iterate over the range 0 to n - 1.
For each index i, set ans[i] to nums[i] and ans[i + n] to nums[i].
Return the array ans.

Using System.arraycopy in Java

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