12/05

  1 '''
  2 6.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"
  3 '''
  4 s = "python的创始人是Guido"
  5 print(s[len(s)-5:len(s)])
  6 print(s[len(s):len(s)-6:-1])
  7 print(s[::3])
  8 
  9 '''
 10 7.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"
 11 '''
 12 s1 = ("你")
 13 s2 = ("最帅")
 14 i = s1 + s2
 15 print(i)
 16 n = i + s2 + s2
 17 print(n)
 18 '''
 19 2. 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
 20 '''
 21 import random
 22 for i in range (0,10):
 23     n = random.randint(0,1000)
 24     print(n)
 25     s = str(n)
 26     res = s[::-1]
 27     if s == res:
 28         print("{}是回文整型数".format(n))
 29 
 30 '''
 31 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>    ？
 32 '''
 33 for g in range(0,21):
 34     for m in range(0,34):
 35         for x in range(0,301):
 36             if (5*g + 3*m + 1/3*x)== 100 and (g + m + x)== 100:
 37                 print("公鸡{}只,母鸡{}只,小鸡{}只".format(g,m,x))
 38 '''
 39 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
 40 '''
 41 s = input("写入一个字符串：")
 42 a = 0
 43 b = 0
 44 for i in s:
 45     if i > "a"and i < "z"or i> "A"and i< "Z":
 46         a += 1
 47     elif i in "1234567890":
 48         b += 1
 49 print("字母的个数是{},数字的个数是{}".format(a,b))

　　

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
  1 year,month = eval(input("输入一个年份月份:")) 
  2 sumd = 0
  3 for y in range (1990,year):
  4     if y % 4 == 0 and  y % 100 != 0 or y % 400 == 0:
  5         sumd += 366
  6     else:
  7         sumd += 365
  8 for m in range (1,month):
  9     if m == 1 or m == 3 or m == 5 or m == 7 or m == 8 or 
 10         m == 10 or m == 12:
 11         sumd += 31 
 12     elif m == 4 or m == 6 or m == 9 or m == 11:
 13         sumd += 30
 14     else:
 15         if year % 4 == 0 and year % 100 != 0 or year % 400 == 0:
 16             sumd += 29
 17         else:
 18             sumd += 28
 19 sumd += 1
 20 print("{}/{}/1是星期{}".format(year,month,sumd%7))