quiz

Chapter 5 Loop Quiz

Table of contents:

• Chapter 5 Loop Quiz
  • Quiz Q0501
  • Quiz Q0502
  • Quiz Q0503
  • Quiz Q0504
  • Quiz Q0505
  • Quiz Q0606
    • Pattern 1
    • Pattern 2
    • Pattern 3
    • Pattern 4
    • Pattern 5
    • Pattern 6
    • Pattern 7
    • Pattern 8
    • Pattern 9
    • Pattern 10 (Bonus Exercise)
  • Quiz Q0607
  • Quiz Q0608

Please read the note carefully and try to solve the problem below:

Note: Some of the symbols in the text below are available in the markdown preview mode only so if you are using a regular text editor, please prefer visual studio code and see the question in preview mode or github preview mode.

Quiz Q0501

From the list below, separate a list that are even and odd and put them into the respective variables

num = [1, 5, 2, 89, 32, 112, 167, 333, 20, 5, 23]
odd_num = []
even_num=[]

the final output should be:

Odd numbers: [1, 5, 89, 167, 333, 5, 23]
Even numbers: [2, 32, 112, 20]

Quiz Q0502

Write a program to print the first 20 fibonacci numbers

The fibonacci sequence is a sequence of numbers where the next number in the sequence is the sum of the previous two numbers in the sequence. eg: 1, 1, 2, 3, 5, 8, 13, ...

hint: use for loop in range of 20, add a and b and update values of a, b and others if necessary

a = 1
b = 1
# answer here

Quiz Q0503

Write a program to create a list of 100 Natural numbers.

1. Find the sum of all numbers from the list using for loop.
2. Find the sum of squares of all numbers from the list using for loop.
3. If each item of a list is represented by x, evaluate the value y = x**2 + 2x + 2 where y is the resulting expression for each item of the list.
4. Find the average of the list.

Quiz Q0504

Write a program that accepts a number from a user and finds out all the positive factors of the number. The program should terminate if user provides any number less than 1.

Factor is a number that divides the given number without giving remainders.

Examples:

• factors of 10 are: 1, 2, 5, and 10
• factors of 18 are: 1, 2, 3, 6, 9 and 18

Quiz Q0505

Write a program to check whether a number is a special number or not.

If the sum of the factorial of digits of a number (N) is equal to the number itself, the number (N) is called a special number.

Eg: 145 is a special number where, 1! + 4! + 5! = 145

Hint 1: you can get each digit using a modulus and integer division of a number by 10 until the number is less than 10.

Let us take a number 145:

Steps	integer division by 10	Modulus by 10	remarks
1	145 // 10 = 14	145 % 10 = 5	5 is ones digit
2	14 // 10 = 1	14 % 10 = 4	4 is tens digit
3	at the end, 1	1 % 10 = 1	1 is hundreds digit

Hint 2: you can use math.factorial() to find out factorial of a number.

Quiz Q0606

Generate patterns below using nested loops:

Pattern 1

*
*   *
*   *   *
*   *   *   *
*   *   *   *   *

Pattern 2

1
1   3
1   3   5
1   3   5   7
1   3   5   7   9

Pattern 3

1
2   2
3   3   3
4   4   4   4
5   5   5   5   5

Pattern 4

1
2   1
3   2   1
4   3   2   1
5   4   3   2   1

Pattern 5

1   2   3   4   5
2   4   6   8   10
3   6   9   12  15
4   8   12  16  20
5   10  15  20  25

Pattern 6

A
A   P
A   P   P
A   P   P   L
A   P   P   L   E

Pattern 7

                *
            *   *
        *   *   *
    *   *   *   *
*   *   *   *   *

Pattern 8

                1
            1   3
        1   3   5
    1   3   5   7
1   3   5   7   9

Pattern 9

                A
            A   P
        A   P   P
    A   P   P   L
A   P   P   L   E

Pattern 10 (Bonus Exercise)

                1
            1   2   1
        1   2   3   2   1
    1   2   3   4   3   2   1
1   2   3   4   5   4   3   2   1

Quiz Q0607

1. Convert the following loop to list comprehension

lst = []
for x in range(10):
    lst.append(2*x+1)

2. Generate a dictionary from a list of first 10 numbers and it's square values using dictionary comprehension.

   Final value should be similar to: {1:1, 2:4, 3:9, 4:16, ..., 10, 100}

3. Create the following pattern using list comprehension, join() method, and others if needed. Try to solve in a single line or single statement.

1
1   2
1   2   3
1   2   3   4
1   2   3   4   5

4. A mathematical function is defined by y = 4x ** 2 + 3x - 6

   1. Create a generator function to generate first 1000 integers starting from -100 and store to a variable y.
   2. Create a list using list comprehension to generate the same values
   3. Compare the memory usage by those variables created in steps i and ii using __sizeof__() method.
   4. Try to generate values of y for first million integers and compare memory usage as done in step iii.

   To learn more about __sizeof__() method, please visit https://www.javatpoint.com/sizeof-in-python

5. Write a program to split a string 'Apple' into a dictionary of ASCII values of each characters using comprehension methods.

   • To learn more about ASCII please refer to the site https://www.asciitable.com/

   • Use the ord() method to find out the ASCII values

   • The final output should be:

     {'A': 65, 'p': 112, 'l': 108, 'e': 101}
     

6. Write a program to generate a dictionary from the given nested tuple using dictionary comprehension.

abbreviations = (
    ('ABC', 'Atanasoff Berry Computer'),
    ('BCD', 'Binary Coded Decimal'),
    ('CD', 'Compact Disc'),
    ('DVD', 'Digital Video Disc'),
    ('HTTP', 'Hyper Text Transfer Protocol'),
    ('WWW', 'World Wide Web'),
)

Quiz Q0608

Try pattern generation exercises from Quiz Q0606 if possible with list comprehension methods.