Python Programming Exercise

Description:

Here, I have been listing programming exercise in Python and they are more challenging with interesting questions for all leveled Python Programmers.

RegEx folder includes the set of Python Multiple Choice Questions & Answers (MCQs) focuses on “Regular Expressions”

Programming languages and frameworks

Python

IDE

PyCharm, Vim

Author

Doston Hamrakulov

Software Engineer, Web Developer, Freelancer

Question_1:

Description:

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.

Hints: Consider use range(#begin, #end, #step) method.

numbers = range(2000, 3201)
sorted_numbers = []

for i in numbers:
    if i % 7 == 0 and i % 5 != 0:
        sorted_numbers.append(i)
print(sorted_numbers)

Question_2:

Description:

Question: Write a program which can compute the factorial of a given numbers. Suppose the following input is supplied to the program: 8 Then, the output should be:

Hints: In case of input data being supplied to the question, it should be assumed to be a console input.

Solution 1:

def fact_1(x):
    b = 1
    for a in range(1, x+1):
        b *= a
    return b
x = int(input())
print(fact_1(x))

Solution 2:

def fact_2(x):
    if x == 0:
        return 1
    return x * fact_2(x - 1)

x=int(input())
print (fact_2(x))

Question_3:

Description:

With a given integral number n, write a program to generate a dictionary that contains (i, i*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}

Hints: In case of input data being supplied to the question, it should be assumed to be a console input.
Consider use dict()

def prog_1(x):
    dict_ = dict()
    for a in range(1, x+1):
        dict_[a] = a*a
    print(dict_.__str__())
prog_1(int(input()))

Question_4:

Description:

Question:
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')\

Hints: In case of input data being supplied to the question, it should be assumed to be a console input. tuple() method can convert list to tuple

def prog_2():
    x = input()
    l = []
    for a in x.split(","):
        l.append(a)
        print(x)
    t = tuple(l)
    print(l)
    print(t)
prog_2()

Question_5:

Description:

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.

Hints: Use init method to construct some parameters

class Class_1:
    def __init__(self, str_):
        self.str_ = str_

    def getString(self):
        print("Enter string:")
        self.str_ = input()
        return

    def printString(self):
        return print(self.str_)

x = Class_1("Salom, Doston")
x.printString()

Question_6:

Description:

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.
Example
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]] \

Hints: Note: In case of input data being supplied to the question, it should be assumed to be a console input in a comma-separated form.

def two_dimens_arr(x, y):
    l1 = []
    for a in range(x):
        l1.append([])
        for b in range(y):
            d = a * b
            l1[a].append(a*b)
    print(l1)
    return
two_dimens_arr(4, 4)

Question_7:

Description:

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\

Hints: In case of input data being supplied to the question, it should be assumed to be a console input.

def prog_3():
    x = input()
    list_ = []

    for a in x.split(","):
        list_.append(a)
    list_.sort()
    str_ = ",".join(list_)
    print(list_)
    print(str_)
    return
prog_3()

Question_8:

Description:

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\

Hints: In case of input data being supplied to the question, it should be assumed to be a console input.
We use set container to remove duplicated data automatically and then use sorted() to sort the data.

def prog_4():
    x = input()
    set_ = set((x.split()))
    list_ = [x for x in set_]
    list_.sort()
    print(" ".join(x for x in list_))
prog_4()

Question_9:

Description:

Write a program which accepts a sequence of comma separated 4 digit binary numbers as its input and
then check whether they are divisible by 5 or not. The numbers that are divisible by 5 are to be printed\ in a comma separated sequence.\ Example: 0100,0011,1010,1001
Then the output should be:
1010
Notes: Assume the data is input by console.\

Hints: In case of input data being supplied to the question, it should be assumed to be a console input.

Solution_1:

def prog_5():
    x = input().split(",")
    print(x)
    list_ = []
    for a in x:
        list_.append(int(a))
    list_2 = [a for a in list_ if a % 5 == 0]
    print(list_2)
prog_5()

Solution_2

value = []
items=[x for x in raw_input().split(',')]
for p in items:
    intp = int(p, 2)
    if not intp%5:
        value.append(p)

print ','.join(value)

Question_10:

Description:

Write a program, which will find all such numbers between 1000 and 3000 (both included) such that
each digit of the number is an even number.
The numbers obtained should be printed in a comma-separated sequence on a single line.\
For example:
2244,2888, Not these values: 2188, 2356, 2792

Hints: In case of input data being supplied to the question, it should be assumed to be a console input.

Solution_1:

def prog_6():
    n_ = []
    str_num_ = ""
    for a in range(1000, 3001):
        str_num_ = str(a)
        indicator_ = 0
        for i in str_num_:
            if int(i)%2 == 0:
                indicator_ += 1
        if indicator_ == 4:
            n_.append(a)
    print(n_)
    return
prog_6()

Solution_2:

values = []
for i in range(1000, 3001):
    s = str(i)
    if (int(s[0])%2==0) and (int(s[1])%2==0) and (int(s[2])%2==0) and (int(s[3])%2==0):
        values.append(s)
print ",".join(values)

Question_11:

Description: Write a Python program to get the Python version you are using Solution:

import sys
str_ = str(sys.version_info[0]) + "." + str(sys.version_info[1]) + "." + str(sys.version_info[2])
print("Python version: " + str_)
# or simple
print(sys.version_info)

Question_12:

Description: Write a Python program which accepts the radius of a circle from the user and compute the area.
Output:

r = 1.1
Area = 3.8013271108436504

Solution:

import math
def prog_7():
    radius  = int(input())
    print("Area for radius: " + str(radius) + " is " + str(math.pi * math.pow(radius, 2)))
prog_7()

Question_13:

Description: Write a Python program which accepts a string and return as reverse order:

Solution_1:

str_ = "Doston"
print("----- Reversing string using FOR loop -------")
s = ""
for x in str_:
    s = x + s
print("Orginal: " + str_)
print("reversed: " + s)

Solution_2:

str_ = "Doston"
def reverse_1(string):
    string = string[::-1]
    return string
print("Orginal: " + str_)
print("reversed: " + reverse_1(str_))

Solution_3:

str_ = "Doston"
def reverse_2(string):
    string = "".join(reversed(string))
    return string
print("Orginal: " + str_)
print("reversed: " + reverse_2(str_))

Question_14:

Description: Write a Python program which accepts a sequence of comma-separated numbers from user and generate a list and a tuple with those numbers.
Output :

List : ['3', ' 5', ' 7', ' 23']
Tuple : ('3', ' 5', ' 7', ' 23') Solution:

def prog_8():
    x = input()
    list_ = list(x.split(","))
    tuple_ = tuple(x.split(","))
    print(list_)
    print(tuple_)
prog_8()

Question_15:

Description: Write a Python program to display the first and last colors from the following list

color_list = ["Red","Green","White" ,"Black"]

Solution:

color_list = ["Red","Green","White" ,"Black"]
print(color_list[0])
print(color_list[len(color_list)-1])

Question_16:

Description: Write a program that accepts a sentence and calculate the number of letters and digits.\ Suppose the following input is supplied to the program:\

hello world! 123
Then, the output should be:
LETTERS 10
DIGITS 3

Solution:

def prog_9():
    # x = input()
    x = "add230"
    int_n = 0
    str_n = 0

    for a in x:
        if a.isalpha():
            str_n +=1
        else:
            int_n +=1
    print("LETTERS: " + str(str_n))
    print("DIGITS: " + str(int_n))
    return
prog_9()

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dostonhamrakulov / Python-challenging-programming-exercises

Python Programming Exercise

Description:

Programming languages and frameworks

IDE

Author

Question_1:

Question_2:

Question_3:

Question_4:

Question_5:

Question_6:

Question_7:

Question_8:

Question_9:

Question_10:

Question_11:

Question_12:

Question_13:

Question_14:

Question_15:

Question_16:

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