a = 4
b = 5
#one
a = a+b
b = a-b
a = a-b
#two
a, b = b, a
#three
a = a^b
b = a^b
a = a^b
print(a,b)
异或推导过程
1.a ⊕ a = 0
2.a ⊕ 0= a
由上知
a=a^b
b=a^b^b=a^0=a
a=a^b=a^a^b=0^b=b
a = 4
b = 5
#one
a = a+b
b = a-b
a = a-b
#two
a, b = b, a
#three
a = a^b
b = a^b
a = a^b
print(a,b)
异或推导过程
1.a ⊕ a = 0
2.a ⊕ 0= a
由上知
a=a^b
b=a^b^b=a^0=a
a=a^b=a^a^b=0^b=b