说明：  FD1D_BURGERS_LEAP is a FORTRAN90 program which solves the nonviscous time-dependent Burgers equation using finite differences and the leapfrog method. The function u(x,t) is to be solved for in the equation:
(FD1D_BURGERS_LEAP is a FORTRAN90 program which solves the nonviscous time-dependent Burgers equation using finite differences and the leapfrog method. The function u(x,t) is to be solved for in the equation )