Array Declaration and Initialization in DSA Python - Build from Scratch

Array Declaration and Initialization

📖 Scenario: You are organizing a small fruit basket for a picnic. You want to keep track of the fruits you have by listing them in order.

🎯 Goal: Create an array (list) of fruits, add a new fruit count, and then display the list of fruits.

📋 What You'll Learn

Create a list called fruits with the exact elements: 'apple', 'banana', 'cherry'

Create a variable called new_fruit and set it to the string 'orange'

Add the new_fruit to the fruits list using the append method

Print the fruits list to show all fruits

💡 Why This Matters

🌍 Real World

Lists are used everywhere to keep track of collections like shopping items, tasks, or contacts.

💼 Career

Knowing how to create and update lists is a basic skill for programming jobs, especially in data handling and user interface development.

1

Create the initial array of fruits

Create a list called fruits with these exact elements in order: 'apple', 'banana', 'cherry'

DSA Python

# Create the list fruits with 'apple', 'banana', 'cherry'
# Your code here

Hint

Use square brackets [] to create a list and separate items with commas.

2

Add a new fruit variable

Create a variable called new_fruit and set it to the string 'orange'

DSA Python

fruits = ['apple', 'banana', 'cherry']
# Create new_fruit variable and set it to 'orange'
# Your code here

Hint

Use the equals sign = to assign the string 'orange' to new_fruit.

3

Add the new fruit to the fruits list

Use the append method on the fruits list to add the new_fruit variable

DSA Python

fruits = ['apple', 'banana', 'cherry']
new_fruit = 'orange'
# Add new_fruit to fruits list
# Your code here

Hint

Call fruits.append(new_fruit) to add the new fruit to the list.

4

Print the fruits list

Print the fruits list to display all the fruits after adding the new one

DSA Python

fruits = ['apple', 'banana', 'cherry']
new_fruit = 'orange'
fruits.append(new_fruit)
# Print the fruits list
# Your code here

Hint

Use print(fruits) to show the list.