打印如下规律的螺旋矩阵，尽管存在求数值规律的方法，但本代码的方法更为基本和通用。vc++ 2005环境。 1 2 9 10 25 4 3 8 11 24 5 6 7 12 23 16 15 14 13 22 17 18 19 20 21 -Print the following laws of the spiral matrix, despite the existence of the law for numerical methods, but this code

clear all clc t=0:1/1000:10-1/1000 s=sin(2*pi*t) snr=20 s_power=var(s) varience of s linear_snr=10^(snr/10) factor=sqrt(s_power/linear_snr) noise=randn(1,length(s))*factor x=s+noise Ó É SNR¼ Æ Ë ã 

The random walker algorithm was introduced in the paper: Leo Grady and Gareth Funka-Lea, "Multi-Label Image Segmentation for Medical Applications Based on Graph-Theoretic Electrical Potentials", in Proceedings of the 8th ECCV04, Workshop on Compute

Econometric Reviews, Vol. 31, No. 3, pp. 245-296, 2012.

实验数据集为：(0.697 0.460)、(0.774 0.376)、( 0.634 0.264)、(0.608 0.318)、(0.556 0.215)、(0.403 0.237)、(0.481 0.149)、(0.437 0.211)、(0.666 0.091)、(0.243 0.267)、(0.245 0.057)、(0.343 0.099)、(0.639 0.161)、(0.657 0.198)、(0.360 0.370)、(0.593 0.042)、(0.719 0.103)、(0.3