螺旋矩阵算法编程，沿各个矩形边框依次给矩阵的每一个元素赋值，在计算机内存中构造一个完整的螺旋矩阵，然后输出。-Spiral Matrix Algorithm for programming, along the border each rectangle in turn give the matrix elements of each assignment, in the computer memory to construct a complete spiral matrix, then ou