Why Sorting Matters and How It Unlocks Other Algorithms in DSA Javascript - See It Work

Why Sorting Matters and How It Unlocks Other Algorithms

📖 Scenario: Imagine you run a small bookstore. You have a list of book prices, but they are all mixed up. To find the cheapest or most expensive book quickly, or to check if a certain price exists, you need to organize this list first. Sorting helps you do this easily.

🎯 Goal: You will create a list of book prices, sort them in ascending order, and then print the sorted list. This will show how sorting helps organize data and makes other tasks easier.

📋 What You'll Learn

Create an array called bookPrices with these exact values: 19.99, 5.99, 12.49, 7.99, 25.00

Create a variable called sortedPrices to hold the sorted array

Use the sort() method with a compare function to sort bookPrices in ascending order

Print the sortedPrices array

💡 Why This Matters

🌍 Real World

Sorting prices helps store owners quickly find the cheapest or most expensive items, making sales and inventory easier to manage.

💼 Career

Sorting is a basic skill used in many jobs involving data, like software development, data analysis, and inventory management.

1

Create the list of book prices

Create an array called bookPrices with these exact values: 19.99, 5.99, 12.49, 7.99, 25.00

DSA Javascript

# Your code here

Hint

Use square brackets [] to create an array and separate values with commas.

2

Prepare a variable for the sorted list

Create a variable called sortedPrices to hold the sorted array

DSA Javascript

const bookPrices = [19.99, 5.99, 12.49, 7.99, 25.00];
# Your code here

Hint

Use let to declare a variable that will change later.

3

Sort the book prices in ascending order

Use the sort() method with a compare function to sort bookPrices in ascending order and assign it to sortedPrices

DSA Javascript

const bookPrices = [19.99, 5.99, 12.49, 7.99, 25.00];
let sortedPrices;
# Your code here

Hint

The compare function (a, b) => a - b sorts numbers from smallest to largest.

4

Print the sorted list

Print the sortedPrices array using console.log()

DSA Javascript

const bookPrices = [19.99, 5.99, 12.49, 7.99, 25.00];
let sortedPrices;
sortedPrices = bookPrices.sort((a, b) => a - b);
# Your code here

Hint

Use console.log(sortedPrices) to show the sorted array.