Easy Java Solution
class Solution {\n    public int[] getConcatenation(int[] nums) \n    {\n      int n = nums.length;\n    int[] b = new int[2*n];\n        \n        for(int i = 
class Solution {\n    public int[] getConcatenation(int[] nums) \n    {\n      int n = nums.length;\n    int[] b = new int[2*n];\n        \n        for(int i = 0; i<nums.length; i++){\n           b[i] = nums[i];\n        }\n        for(int i = 0; i<nums.length; i++){\n            b[i+n] = nums[i];\n        }\n        return b;    \n    }\n}    \n
['Array', 'Java']