Algorithms and Data Structures with Python

Practical Exercises: Chapter 3

Exercise 1

Create a Python list of the first ten prime numbers and then use slicing to obtain the 3rd to 7th prime numbers from the list.

Solution:

primes = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29]

subset_primes = primes[2:7]

print(subset_primes) # Output: [5, 7, 11, 13, 17]

 

Exercise 2

Create a set of vowels and then determine if the letter 'a' and letter 'b' are in the set.

Solution:

vowels = {'a', 'e', 'i', 'o', 'u'}

print('a' in vowels) # Output: True

print('b' in vowels) # Output: False

 

Exercise 3

Define a dictionary that stores the atomic number (as the key) and symbol (as the value) for the elements Hydrogen, Helium, and Carbon. Fetch the symbol for Helium.

Solution:

elements = {

1: 'H', # Hydrogen

2: 'He', # Helium ...