基于三叉树的期权定价模型，包括路径依赖型，向下敲出期权等奇异期权-Trinomial tree option pricing model, including path-dependent, and down to knock out the options and exotic options

欧式看涨期权三叉树模型的实现，以及障碍期权的运用(The implementation of the trinomial model to the European call option The implementation of a barrier to the European call and out option)