python1119-20181205作业-郭恩赐提交

作业1

　　定义一个字符串"python的创始人是Guido",试分别打印出"Guido"，"odiuG", "ph的人uo"

s = 'python的创始人是Guido'
print(s[-5:])
print(s[:-6:-1])
print(s[::3])

作业2

　　有字符串"你"和"最帅"，如何得到字符串"你最帅"，又如何得到字符串"你最帅最帅最帅"

s1 = '你'
s2 = '最帅'
print (s1+s2)
print(s1+s2*3)

作业3

　　像121 11 111等对称的整型数称为回文整型数,随机产生1000以内的10个整型数，打印>其中的回文整型数

import random
for i in range(10):
    x = random.randint(0,1000)
    
    ge = x%10
    shi = x//10%10
    bai = x//100
    qian = x//1000
    if ge== shi and bai==0 and qian==0 or ge ==qian and shi == bai\
 and qian != 0 or ge==bai and qian==0 and bai != 0:
        print('%d是回文整型数'%x,end=" ")

    print(x)

作业4

　　公鸡5文钱1只，母鸡3文钱1只，小鸡3只1文钱，用100文钱买100只鸡，可以怎么买？

for gg in range (0,20):
    for mg in range (0,100//3):
        for xg in range(0,100):
            if mg+gg+xg ==100 and gg*5 + mg*3 + xg //3 ==100:
                if xg%3 ==0:
                    print('公鸡{}只，母鸡{}只，小鸡{}只'.format(gg,mg,xg))

作业5

　　使用input()读入一个字符串，统计字符串中字母的个数，和数字的个数

　　

s = input('请输入一个字符串：')
sn=nn=0
for i in s:
    if "A"<=i<="Z"or 'a'<= i <='z':
        sn+=1
    elif '0'<=i <='9':
        nn+=1
    
print('字母的个数：{}，数字的个数{}'.format(sn,nn))

作业6

　　附加:
        已知1990.1.1是星期一,用户输入一个1990后的>任意年月，计算其1号星期几
        参考命令cal 12 2018

nian=int(input ('请输入年份：'))
yue=int(input('请输入月份：'))
nday =0
def runnian(nian):
    if nian%4==0 and nian%100!=0 or nian%400==0:
        return True
    else:
        return False

for i in range(1,yue):
    if i ==1 or i ==3 or i ==5 or i == 7 or i ==8 or i ==10 or i ==12:
        myue=31
    elif i == 4 or i == 6 or i ==9 or i ==11:
        myue=30
    else:
        if runnian(nian):
            myue = 29
        else:
            myue=28
    nday=nday+myue
nnday=0
for x in range(1990,nian):
    year=365
    if runnian(x):
        year =366
    nnday= year+nnday
zday =nnday + nday
print(zday%7+1)