杨辉三角的示例程序，由于数据结构学习。二项式定理与杨辉三角形是一对天然的数形趣遇，它把数形结合带进了计算数学。求二项式展开式系数的问题，实际上是一种组合数的计算问题。-The sample program in Pascal' s Triangle, learning due to the data structure. The binomial theorem Triangle is a natural form interesting case of it into computational mathematics Shuxingjiege. Seeking binomial expansion coefficient, is actually a combination of the number of computational problems.