class Solution:
‘’’
参数A和B:输入列表
返回值:整数是点积
‘’’

def dotproduct(self,A,B):
    if len(A)==0 or len(B)==0 or len(A) !=len(B):
        return "没有点积"
    a=0
    for i in range(len(A)):
        a+=A[i]*B[i]
    return a

#主函数
if name == ‘main’:

A=[1,2,3]
B=[5,5,5]
solution= Solution()
print("A与B分别为:",A,B)
print("点积为:", solution.dotproduct(A,B))   
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