Python基础练习100题 ( 71
- 2020 年 1 月 3 日
- 笔记
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 random print (random.choice([i for i in range(10,151) if i%5==0 and i%7==0]))
解法二
import random resp = [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 random resp = 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 random numbers = random.sample(range(100,201,2),5) print(numbers)
解法二
import random print (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 random lst = [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 random number= random.choice([x for x in range(7,16)]) print(number)
解法二
import random print(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 zlib s = '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 Timer t = Timer("for i in range(100):1+1") t.timeit()
解法二
import time before = time.time() for i in range(100): x = 1 + 1 after = time.time() execution_time = after - before print(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 random lst = [3,6,7,8] seed = 7 random.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!=0 li = [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：
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！！！
