public static long jointArrayData(int[] nums) {//定义变量存放数据long num = 0;//头尾“相加”for (int i = 0,j = nums.length-1; i <= j; i++,j--) {if (i!=j){//String.valueOf先将Int转String，进行字符串的连接，再用Integer.parseInt方法转回IntString str = String.valueOf(nums[i])+String.valueOf(nums[j]);num += Integer.parseInt(str);}else {num+=nums[i];}}System.out.println(num);return num;}