java实现多项式加法，乘法，除法，利用辗转相除法求两个多项式的最大公因子-java achieve polynomial addition, multiplication, division, using Euclidean algorithm for greatest common divisor of two polynomials

实现了KNN文本的分类，KNN最近邻基于欧几里德距离的JAVA算法实现适用于初级学习KNN的初学者。-Realization of KNN text classification, KNN nearest neighbor JAVA algorithm for Euclidean distance implementation is applied to the primary learning KNN beginners based on.