全球只有4个人通关的游戏！ 长方体铁块，翻滚。闯关游戏-good

实现学生用户操作，同样通过修改一样可以改为计算长方体的体积表面积，结果会在xml中显示-Students realize user operation, the same volume can be changed by modifying the surface area calculated as cuboid, the results will be displayed in xml

此函数是三维装箱问题里的一个子函数，他的功能是将一个长方体物品放到一个平面序列后，返回装入后的平面序列和所用的集装箱数目。-This function is three-dimensional packing problem in a Function, and his function is a rectangular items into a flat sequence, after the plane back into the sequence and number of used co