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Python基础练习100题 ( 71~ 80)

时间:2019-06-10 09:40:08  来源:  作者:alpha94511  所属栏目:Python

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

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:

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!!!

原文地址:https://segmentfault.com/a/1190000019425151,作者:alpha94511

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