图像旋转程序,可以对图像进行任意角度的旋转(旋转后无图像部分用255赋值)。-image rotation procedures, the images can be arbitrary angle of rotation (after rotating images without using some 255 assignment).
ACM题目,实现两个大数的相乘,题目详见http://acm.zju.edu.cn/show_problem.php?pid=1272-ACM topic, the two realize the multiplication of large numbers, see the topic http://acm.zju.edu.cn/show_problem.php?pid=1272