说明：  计算晶粒的生长，入门级别程序,包括AHP，因子分析，回归分析，聚类分析，用蒙特卡洛模拟的方法计算美式期权的价格以及基本描述。
( Calculation of growth, entry-level program grains Including AHP, factor analysis, regression analysis, cluster analysis, Monte Carlo simulation method of calculating the American option price and basic description.)