###LinearSolver by C
Three directories are in this project.
In nrlib, there are some source files and header files from Numerical Recipes's web and book, which are required by LUdecomp and ResistorNetwork.
In LUdecomp, the programe can solve a general linear system by LU decomposition.
In ResistorNetwork, the programe can solve the resistor network problem by modeling it as a linear system.