import numpy as np
#1
a="Hello"
for i in a:
    print(ord(i))
print(chr(65))

#3
A=np.array([3,4])
B=np.array([1,2])
AB=A+B
print(AB)
A2=2*A
print(A2)
moA=np.linalg.norm(A)
print(moA)

#4
C=np.array([1,2,3])
D=np.array([4,5,6])
dotCD=np.dot(C,D)
print(dotCD)

#5
Doc1="Python是编程语言"
Doc2="Java是编程语言"
Doc1="Python Python Python"