稀疏矩阵和满矩阵计算解线性方程组，所好的计算机cpu时间的差异和所占内存空间的差异。一个简单的比较程序。-Sparse matrix and full matrix calculation of solving linear equations, the difference between good computer cpu time and memory space occupied the difference. A simple comparison process.

这是一个MATLAB例程，用以实现MATLAB实现CPU计时，主要用以计算程序运行的时间(Implement the CPU time by using the MATLAB)