[LeetCode/Java] Concatenation of Array

-Code

class Solution {
    public int[] getConcatenation(int[] nums) {
        int len = nums.length * 2;
        int[] answer = new int[len];

        for (int i = 0; i < len; i++) {
            answer[i] = nums[i % (len / 2)];
        }

        return answer;
    }
}