螺旋矩阵算法及程序点评（Spiral matrix Algorithms and procedures）.doc

螺旋矩阵算法及程序点评（Spiral matrix Algorithms and procedures） Finally, the program of libaojian is finished. It is a traversal method, and each side is organized into a circle. There is a point involved in the calculation of mathematical models, but unfortunately not spontaneous, because the call of method, the value does not come back, had to calculate. More importantly, due to an algorithm defect, resulting in that it cannot be sequentially dropped, it has to be computed. The libaojian program has a flaw and an error in the algorithm. Defects are thinking levels, and errors are programming skills. So I put them apart. A flaw is when the abstract does not accurately reflect the essence of the problem. Each circle of the spiral matrix is in order, first up, right, and then to the left, and finally to the left. He simply divided the four sides into two lines and two columns, losing the implicit inner connections. The result has to make up for the logic of control, which leads to the complexity of the control logic. A mistake means that in Vector getvecs (...), col1 has double implications in different situations. In the presence of row1, col1 is calculated from the next line of row1. For the last odd column, row1 does not exist, and col1 is counted from the first line. This ambiguity directly results in the complexity of the control logic when Vector is converted to Array. In addition to algorithmic defects and errors, there are a large number of redundant IF in the program, which is not logical enough because of the demand of the algorithm and the demand of the control logic, which is very common for the novice. In general, the programming skills of libaojian have a lot of room for improvement. I rewrote the program, retained the main algorithm, modified the error and simplified the control logic. Hope to be helpful to libaojian. Import java.util.*; Public class test { //Main method Public, static, void, main (String[], args) { Int row = Integer.parseInt (args[0]); Int col =