Java .. Simple Approach
Code\n\nclass Solution {\n    public long findTheArrayConcVal(int[] nums) {\n        List<String> list = new ArrayList<>();\n        int l = 0;\n        int r= 
# Code\n```\nclass Solution {\n    public long findTheArrayConcVal(int[] nums) {\n        List<String> list = new ArrayList<>();\n        int l = 0;\n        int r= nums.length-1;\n        while(l<=r){\n           if(l != r){\n            list.add(nums[l]+""+nums[r]+"");\n            l++;\n            r--;\n           }\n           else{\n            list.add(nums[l]+"");\n            l++;\n            r--;\n           }\n        }\n        long ans =0;\n        for(String s : list){\n            ans = ans+Long.parseLong(s);\n        }\n       \n        return ans;\n    }\n}\n```
['Java']