| The second nonlinear system to be solved derived to the Hamitonian formulation dv/dt=Hv f(v,t), in which v is an unknown 2n\|dimensional vector, H is a coefficient matrix, and f(v,t) is its nonlinear part. Based on 2\ N type algorithm [3] , a precise time integration method with remarkable accuracy for solving such a nonlinear system is presented in this paper. The algorithm was proved highly effective for a series of numerical examples. |