多项式乘法两个一维数组，按照次数从高到低存储两个多项式的系数，定义一维数组来存储结果；利用函数来完成对结果多项式各项系数的计算-The multiplication of polynomials two e-dimensional arrays, from high to low save two multinomials according to the number of times the coefficients, the definition e-dimensional array s