第十二周作业-python123

1.正则表达式的点星分配

import re
str1=input()
str2=input()
if re.match(str2,str1):
    print("True")
else:
    print("False")

 2.梯形法计算积分值

import math
a,b = map(eval,input().split(' '))
quantity= int(input())
dx=abs(b-a)/quantity
sum = 0
for i in range(quantity):
    s = abs(math.sin(a)*dx)
    a = a + dx
    sum = sum + s
print('{:.2f}'.format(sum))

 3.哥德巴赫猜想

N = int(input())
if N % 2 == 0 and 2 < N < 2000000000:
    for p in range (2,N+1):
        q = N - p
        P = 0
        Q = 0
        for i in range(2,p):
            if p % i == 0:
                P = 1
        for j in range(2,q):
            if q % j == 0:
                Q = 1
        if P == 0 and Q == 0:
            print('N = {} + {}'.format(p,q))
            break

 4.鸡兔同笼B

n = int(input())
minans = 0
maxans = 0
for i in range(n):
    feets = int(input())
    if feets ==2:
        print('1 1')
    else:
        if feets % 2 == 0 and feets % 4 != 0 :
            minans = int((feets-2)/4+1)
            maxans = int(feets/2)
        elif feets % 4 == 0:
            minans = int(feets/4)
            maxans = int(feets/2)
        print(minans,maxans)

 5.与7无关的数

n = int(input())
num = []
sum = 0
for i in range(n):
    I = list(str(i))
    if i % 7 != 0 and I[-1] != '7' :
        num.append(i)
        sum += i*i
print(num)
print(sum)

 6.完美立方数

N = int(input())
if 1 < N <= 100:
    for a in range(2,N+1):
        for b in range(2,N):
            for c in range(b+1,N):
                for d in range(c+1,N):
                    if pow(a,3) == pow(b,3) + pow(c,3) + pow(d,3):
                        print('Cube = {},Triple = ({},{},{})'.format(a,b,c,d))

 7.高次方程求根

def f(x):
    r = x**5 - 15*x**4 + 85*x**3 -225*x**2 + 274*x - 121
    return r

x1 = 1.5
x2 = 2.4
ans = (x1+x2)/2
while abs(f(ans)) > 1e-6:
    if f(x1) * f(ans) < 0:
        x2 = ans
    else:
        x1 = ans
    ans = (x1 + x2)/2
print('{:.6f}'.format(ans))

 8.程序设计题

#1
activity = ["上山去砍柴","开车去东北","最爱打游戏"]
for i in range(3):
    print("小明，10岁，男，"+activity[i])
print("")
for i in range(3):
    print("老李，90岁，男，"+activity[i])
#2
name = ['小明', '老李']
age = ['10岁', '90岁']
sex = ['男']
activity = ["上山去砍柴", "开车去东北", "最爱打游戏"]

def func(a,b,c):
    print("{},{},{},{}".format(name[a],age[b],sex[0],activity[c]))

for i in range(3):
    func(0,0,i)
print("")
for i in range(3):
    func(1,1,i)