第二次作业-python123

1.计算矩形面积

a = float(input())
b = float(input())
s = a * b
s_S = round(s,2)
print(""+str(s_S))

2.格式化输出

s = float(input())
print("{:.3f}".format(s))

3.字符串逆序输出

str = input()
print(str[::-1])

4.照猫画虎求阶乘

n = int(input())
a = 1
for i in range(1,n+1):
a = a * i
print(a)

5.天天向上的力量B

NN=eval(input(""))
Working=pow((1.0+0.001*NN),364)
Pig=pow((1.0-0.001*NN),364)
BB=int(Working//Pig)
print("{:.2f}, {:.2f}, {}".format(Working,Pig,BB))

6.同符号数学运算

N=eval(input())
N1=abs(N)
if N<0:
N2=-abs(abs(N)+10)
N3=-abs(abs(N)-10)
N4=-abs(N*10)
else:
N2=abs(N+10)
N3=abs(N-10)
N4=abs(N*10)
print("{:} {:} {:} {:}".format(N1,N2,N3,N4))

7.快乐的数字

def x(n):
list = [int(i)for i in str(n)]
s = 0
for i in range(0,len(list)):
s = s + pow(list[i],2)
return s
n = input()
while x(n)>=10:
n = x(n)
else:
if x(n)==1:
print('True')
else:
print('False')

8.凯撒秘密B

s = input("")

t = ""
for c in s:
if 'a' <= c <= 'z':
t += chr( ord('a') + ((ord(c)-ord('a')) + 3 )%26 )
elif 'A'<=c<='Z':
t += chr( ord('A') + ((ord(c)-ord('A')) + 3 )%26 )
else:
t += c
print(t)

9.括号配对检测A

st=input()
a=0
for x in st:
if x=="(":
a+=1
if x==")":
a-=1
if a<0:
print("配对不成功")
break
else:
if a == 0:
print("配对成功")
else:
print("配对不成功")

10.字符串反码A

s=input()
t=''
for i in range(len(s)):
if 97<=ord(s[i])<=122 :
t+=chr(122-ord(s[i])+97)
continue
if 65<=ord(s[i])<=90:
t+=chr(90-ord(s[i])+65)
else:
t+=s[i] 
print(t)