java写的螺旋矩阵 可以自己设定坐标和值 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-java write spiral matrix can be set for the coordinates and the value of spiral matrix algorithm for programming, along the border of each rectangle in turn to the matrix o