这是松弛法编程，它是高斯-赛德尔迭代法的一种加速收敛的方法。是大型稀疏矩阵线性方程组的有效解法之一。

-This is the relaxation method programming, it is the Gauss- Seidel iterative method to accelerate the convergence of a method. Large sparse matrix system of linear equations, one effective solution.