Sorting with order() in R Programming - Mini Project: Build & Apply

Sorting a List of Fruits by Price Using order() in R

📖 Scenario: You run a small fruit shop and keep a list of fruits with their prices. You want to sort the fruits by their prices to decide which ones to promote.

🎯 Goal: Learn how to use the order() function in R to sort a list of fruits by their prices in ascending order.

📋 What You'll Learn

Create a vector called fruits with the values "apple", "banana", "cherry", "date", "elderberry"

Create a numeric vector called prices with the values 3.5, 2.0, 4.0, 5.5, 1.5

Create a variable called sorted_indices using the order() function on prices

Use sorted_indices to create a new vector called sorted_fruits that sorts fruits by price

Print the sorted_fruits vector

💡 Why This Matters

🌍 Real World

Sorting items by price helps shop owners decide which products to promote or discount.

💼 Career

Understanding sorting techniques is essential for data analysis and organizing information efficiently in many jobs.

1

Create the fruits and prices vectors

Create a vector called fruits with the values "apple", "banana", "cherry", "date", "elderberry". Then create a numeric vector called prices with the values 3.5, 2.0, 4.0, 5.5, 1.5.

R Programming

# Create the fruits vector
# Create the prices vector
# Your code here

Need a hint?

Use the c() function to create vectors in R.

2

Create sorted indices using order()

Create a variable called sorted_indices by using the order() function on the prices vector.

R Programming

fruits <- c("apple", "banana", "cherry", "date", "elderberry")
prices <- c(3.5, 2.0, 4.0, 5.5, 1.5)
# Create sorted_indices using order() on prices
# Your code here

Need a hint?

The order() function returns the positions that would sort the vector.

3

Sort fruits using sorted indices

Create a new vector called sorted_fruits by using sorted_indices to reorder the fruits vector.

R Programming

fruits <- c("apple", "banana", "cherry", "date", "elderberry")
prices <- c(3.5, 2.0, 4.0, 5.5, 1.5)
sorted_indices <- order(prices)
# Use sorted_indices to create sorted_fruits
# Your code here

Need a hint?

Use square brackets [] to reorder a vector by indices.

4

Print the sorted fruits

Print the sorted_fruits vector to display the fruits sorted by price.

R Programming

fruits <- c("apple", "banana", "cherry", "date", "elderberry")
prices <- c(3.5, 2.0, 4.0, 5.5, 1.5)
sorted_indices <- order(prices)
sorted_fruits <- fruits[sorted_indices]
# Print sorted_fruits
# Your code here

Need a hint?

Use the print() function to show the vector.