Yang_g_的博客

奔跑在IT之路 int arr[] = new int[] {1,2,3,8,0}; int index[] = new int[] {0,2,0,3,3,1,0,4,3,3,1}; String weChatNum = ""; for (int i : index) { weChatNum += arr[i]; } System.out.println("微信号： " + weChatNum);