#N1929 Concatenation of Array
problem link=>https://leetcode.com/problems/concatenation-of-array/

class Solution {
    public int[] getConcatenation(int[] nums) {
        int[] ans=new int[nums.length * 2];
        for(int i=0; i<nums.length; i++){
            ans[i]=nums[i];
            ans[i+nums.length]=nums[i];
        }
        return ans;
    }
}