刷题继续

昨天和大家分享了61-70题，今天继续来刷71~80题

Question 71:

Please write a program to output a random number, which is divisible by 5 and 7, between 10 and 150 inclusive using random module and list comprehension.

解法一

import randomprint (random.choice([i for i in range(10,151) if i%5==0 and i%7==0]))

解法二

import randomresp = [i for i in range(10,151) if i % 35 == 0 ]print(random.choice(resp))

Question 72:

Please write a program to generate a list with 5 random numbers between 100 and 200 inclusive.

解法一

import randomresp = random.sample(range(100,201),5)print(resp)

Question 73:

Please write a program to randomly generate a list with 5 even numbers between 100 and 200 inclusive.

解法一

import randomnumbers = random.sample(range(100,201,2),5)print(numbers)

解法二

import randomprint (random.sample([i for i in range(100,201) if i%2==0], 5))

Question 74:

Please write a program to randomly generate a list with 5 numbers, which are divisible by 5 and 7 , between 1 and 1000 inclusive.

解法一

import randomlst = [i for i in range(1,1001) if i%35 == 0]resp = random.sample(lst,5)print(resp)

Question 75:

Please write a program to randomly print a integer number between 7 and 15 inclusive.

解法一

import randomnumber= random.choice([x for x in range(7,16)])print(number)

解法二

import randomprint(random.randrange(7,16))

Question 76:

Please write a program to compress and decompress the string "hello world!hello world!hello world!hello world!".

解法一

import zlibs = 'hello world!hello world!hello world!hello world!'.encode()t = zlib.compress(s)print(t)print(zlib.decompress(t))

Question 77:

Please write a program to print the running time of execution of "1+1" for 100 times.

解法一

from timeit import Timert = Timer("for i in range(100):1+1")t.timeit()

解法二

import timebefore = time.time()for i in range(100):    x = 1 + 1after = time.time()execution_time = after - beforeprint(execution_time)

Question 78:

Please write a program to shuffle and print the list [3,6,7,8].

解法一

import  random  lst  =  [3,6,7,8]  random.shuffle(lst)  print(lst)

解法二

import randomlst = [3,6,7,8]seed = 7random.Random(seed).shuffle(lst)print(lst)

Question 79:

Please write a program to generate all sentences where subject is in ["I", "You"] and verb is in ["Play", "Love"] and the object is in ["Hockey","Football"].

解法一

subjects=["I", "You"]verbs=["Play", "Love"]objects=["Hockey","Football"]res = [[i, j, k] for i in subjects                   for j in verbs                  for k in objects] for x in res:    print(" ".join(x))Out:      I Play Hockey     I Play Football     I Love Hockey     I Love Football     You Play Hockey     You Play Football     You Love Hockey     You Love Football

解法二

subjects=["I", "You"]verbs=["Play", "Love"]objects=["Hockey","Football"]for sub in subjects:    for verb in verbs:        for obj in objects:            print("{}  {}  {}".format(sub,verb,obj))Out:    I Play Hockey     I Play Football     I Love Hockey     I Love Football     You Play Hockey     You Play Football     You Love Hockey     You Love Football

解法三

import itertools subjects=["I", "You"]verbs=["Play", "Love"]objects=["Hockey","Football"]all_list = [subjects,verbs,objects]res = list(itertools.product(*all_list)) for x in res:    print(" ".join(x))Out:    I Play Hockey     I Play Football     I Love Hockey     I Love Football     You Play Hockey     You Play Football     You Love Hockey     You Love Football

Question 80:

Please write a program to print the list after removing even numbers in [5,6,77,45,22,12,24].

解法一

def isEven(n):    return n%2!=0li = [5,6,77,45,22,12,24]lst = list(filter(isEven,li))print(lst)

解法二

li  =  [5,6,77,45,22,12,24]  lst  =  list(filter(lambda  n:n%2!=0,li))  print(lst)

源代码下载

这十道题的代码在我的github上，如果大家想看一下每道题的输出结果，可以点击以下链接下载：

  • Python 71 - 80题

我的运行环境Python 3.6+,如果你用的是Python 2.7版本，绝大多数不同就体现在以下3点：

  • raw_input()在Python3中是input()
  • print需要加括号
  • fstring可以换成.format(),或者%s，%d

谢谢大家，我们下期见！希望各位朋友不要吝啬，把每道题的更高效的解法写在评论里，我们一起进步！！！