一套全面的练习，大家智慧的结晶

大家好，好久不见，我最近在Github上发现了一个好东西，是关于夯实Python基础的100道题，原作者是在Python2的时候创建的，闲来无事，非常适合像我一样的小白来练习

对于每一道题，解法都不唯一，我在这里仅仅是抛砖引玉，希望可以集合大家的智慧，如果哪道题有其他解法，希望可以在评论中留下大家宝贵的意见！每次我会更新10道题，一共会更新10篇，这也算是对我之前的文章一个总结啦，如果没有看到我之前有关Python的小白学习分享的同学们，可以戳下面连接查看哈：

如果大家想要和我联系，可以访问我的个人主页:

好啦，闲话少说，让我们开始今天的刷题之旅吧！

Question 1:

Write a program which will find all such numbers which are divisible by 7 but are not a multiple of 5,between 2000 and 3200 (both included).The numbers obtained should be printed in a comma-separated sequence on a single line.

解法一

for i in range(2000,3201):

if i%7 == 0 and i%5!=0:

print(i,end=',')

print("\b")

解法二

numbers = [str(x) for x in range(2000,3201) if (x%7==0) and (x%5!=0)]

print (','.join(numbers))

Question 2:

*Write a program which can compute the factorial of a given numbers.The results should be printed in a comma-separated sequence on a single line.Suppose the following input is supplied to the program: 8

Then, the output should be:40320*

解法一

def fact(x):

if x == 0:

return 1

return x * fact(x - 1)

x=int(input())

print(fact(x))

解法二

import math as ma

x=int(input())

print(ma.factorial(x))

解法三

from functools import reduce

from operator import mul

x=int(input())

print(reduce(mul,range(1,x+1)))

Question 3:

With a given integral number n, write a program to generate a dictionary that contains (i, i x i) such that is an integral number between 1 and n (both included). and then the program should print the dictionary.Suppose the following input is supplied to the program: 8

Then, the output should be:

{1: 1, 2: 4, 3: 9, 4: 16, 5: 25, 6: 36, 7: 49, 8: 64}

解法一

n=int(input())

d=dict()

for i in range(1,n+1):

d[i]=i*i

print(d)

解法二

n=int(input())

d={x:x*x for x in range(1,n+1)}

print(d)

Question 4:

Write a program which accepts a sequence of comma-separated numbers from console and generate a list and a tuple which contains every number.Suppose the following input is supplied to the program:

34,67,55,33,12,98

Then, the output should be:

['34', '67', '55', '33', '12', '98']

('34', '67', '55', '33', '12', '98')

解法一

values=input()

l=values.split(",")

t=tuple(l)

print(f"List of values : {l}")

print(f"Tuple of values : {t}")

Question 5:

Define a class which has at least two methods:

getString: to get a string from console input

printString: to print the string in upper case.

Also please include simple test function to test the class methods.

解法一

class InputOutString:

def __init__(self):

self.s = ""

def getString(self):

self.s = input()

def printString(self):

print(self.s.upper())

# Test

a = InputOutString()

a.getString()

a.printString()

Question 6:

Write a program that calculates and prints the value according to the given formula:

Q = Square root of [(2 C D)/H]

Following are the fixed values of C and H:

C is 50. H is 30.

D is the variable whose values should be input to your program in a comma-separated sequence.For example

Let us assume the following comma separated input sequence is given to the program:*

100,150,180

The output of the program should be:

18,22,24

解法一

import math

c=50

h=30

value = []

items= [x for x in input("Input numbers comma-separated:").split(',')]

for d in items:

value.append(str(int(round(math.sqrt(2*c*float(d)/h)))))

print (','.join(value))

Question 7:

Write a program which takes 2 digits, X,Y as input and generates a 2-dimensional array. The element value in the i-th row and j-th column of the array should be i * j.

Note: i=0,1.., X-1; j=0,1,¡­Y-1. Suppose the following inputs are given to the program: 3,5

Then, the output of the program should be:

[[0, 0, 0, 0, 0], [0, 1, 2, 3, 4], [0, 2, 4, 6, 8]]

解法一

x,y = map(int,input().split(','))

lst = []

for i in range(x):

tmp = []

for j in range(y):

tmp.append(i*j)

lst.append(tmp)

print(lst)

解法二

x,y = map(int,input().split(','))

lst = [[i*j for j in range(y)] for i in range(x)]

print(lst)

Question 8:

Write a program that accepts a comma separated sequence of words as input and prints the words in a comma-separated sequence after sorting them alphabetically.

Suppose the following input is supplied to the program:

without,hello,bag,world

Then, the output should be:

bag,hello,without,world

解法一

original_string = input("Input Text:")

l = original_string.split(",")

final_string = sorted(l,key=str)

print(','.join(final_string))

解法二

lst = input().split(',')

lst.sort()

print(",".join(lst))

Question 9:

Write a program that accepts sequence of lines as input and prints the lines after making all characters in the sentence capitalized.

Suppose the following input is supplied to the program:

Hello world

Practice makes perfect

Then, the output should be:

HELLO WORLD

PRACTICE MAKES PERFECT

解法一

lines = []

while True:

s = input()

if s:

lines.append(s.upper())

else:

break;

for sentence in lines:

print(sentence)

Question 10:

Write a program that accepts a sequence of whitespace separated words as input and prints the words after removing all duplicate words and sorting them alphanumerically.

Suppose the following input is supplied to the program:

hello world and practice makes perfect and hello world again

Then, the output should be:

again and hello makes perfect practice world

解法一

word = input().split()

for i in word:

if word.count(i) > 1: #count function returns total repeatation of an element that is send as argument

word.remove(i) # removes exactly one element per call

word.sort()

print(" ".join(word))

解法二

s = input("Input Text:")

words = [word for word in s.split(" ")]

print (" ".join(sorted(list(set(words)))))

源代码下载

我把前十道题的代码上传到github上啦，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！！！