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 FootballQuestion 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)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！！！
