‘’‘a = 100
b = 20’’’
#加减法交换
‘’'a,b = b,a
print(a)
print(b)
a = a + b
a = a - b
b = a - b
#print(a)
#print(b)
a=b
b=temp
temp=a
print(a)
print(b)’’’
#位运算交换1
‘’‘a = a ^ b
b = a ^ b
a = b ^ a
print(a)
print(b)’’’
#位运算交换2
‘’‘b =((ab)a)
a =((ab)b)
print(a,b)’’’
#计算器
‘’'a = int(input(‘请输入一个数：’))
b = int(input(‘请输入一个数：’))
c = str(input(‘请输入一个符号：’))
if (c == ‘+’):
print(f’{a + b}’)
elif(c == ‘-’):
print(f’a-b’)
elif(c == ‘’):
print(f’ab’)
elif(c == ‘/’):
print(f’a/b’)
elif(c == ‘%’):
print(f’a%b’)
elif(c == ‘’):
print(f’ab’)
print(f"{a+b},{a-b},{a*b},{a/b}.{a%b}")’’’
#第三题
‘’‘x=set()#函数创建一个无序不重复元素集，可进行关系测试，删除重复数据，还可以计算交集、差集、并集等。
ls = [1,3,5,7,9]
for i in ls:
for a in ls:
for b in ls:
for c in ls:
if i != a and i != b and i != c and a != b and a != c and b != c :
x.add(i1000+a100+b10+c)#给x一个不重复的集合，add()方法用于给集合添加元素，
#如果添加的元素在集合中已存在，则不执行任何操作。
print(x)
print(len(x))
print(sum(x))’’’
#第四题
ls = [1,2,3,4,5,6,7,8,9,10,11,12]
A = 8 / len(ls)
B = 4 / len(ls)
print(f’{AB}’)
#第五题
‘’‘print(f’a a^2 a^3n’f’{1} {2} {3}n’f’2 4 8n’f’3 9 27’)’’’
#第八题,奇数奇数=偶数，偶数偶数=奇数，奇数^偶数=奇数
‘’‘n = int(input(“请输入一个数：”))
m = 2
c = n^m
if(c%2==0):
print(‘是偶数’)
if(c%2!=0):
print(“是奇数”)
else:
print(‘是奇数’)’’’
#第九题
‘’‘n = int(input(‘请输入一个数：’))
if n == 0:
print(‘False’)
while n%2 == 0:#while一直循环，直到n=1时才会执行print
n = n/2
if n == 1:
print(‘True’)
else:
print(‘False’)’’’
#第十题
‘’‘m = int(input(‘请输入长：’))
n = int(input(‘请输入宽：’))
p = m * n
r = 2*(m+n)
print(f’面积={p}’,f’周长={r}’)’’’
#第十一题
‘’‘m = int(input(‘请输入天数：’))
n = int(m / 7)
p = 365 - m
print(f’这一年已经过了{n}周’,f’这一年还剩下{p}天’)’’’
#第十二题
‘’‘pi = 3.14
n = int(input(‘请输入半径：’))
m = pinn
print(f’圆的面积是{m}’)’’’
