Zip for combining collections in Kotlin - Mini Project: Build & Apply

Zip for combining collections

📖 Scenario: You are organizing a small event and have two lists: one with the names of guests and another with their favorite drinks. You want to pair each guest with their favorite drink to prepare the right refreshments.

🎯 Goal: Build a Kotlin program that uses zip to combine two lists into pairs of guest names and their favorite drinks.

📋 What You'll Learn

Create a list called guests with the exact names: "Alice", "Bob", "Charlie"

Create a list called drinks with the exact drinks: "Coffee", "Tea", "Juice"

Create a variable called guestDrinkPairs that uses zip to combine guests and drinks

Print the guestDrinkPairs list

💡 Why This Matters

🌍 Real World

Combining two related lists is common when you want to pair data, like matching names with preferences or products with prices.

💼 Career

Understanding how to combine collections efficiently is useful in data processing, UI development, and backend programming.

1

Create the guests list

Create a list called guests with these exact names: "Alice", "Bob", "Charlie"

Kotlin

# Create the list called guests with the names "Alice", "Bob", "Charlie"
# Your code here

Need a hint?

Use listOf to create a list with the exact names.

2

Create the drinks list

Create a list called drinks with these exact drinks: "Coffee", "Tea", "Juice"

Kotlin

val guests = listOf("Alice", "Bob", "Charlie")
# Create the list called drinks with the drinks "Coffee", "Tea", "Juice"
# Your code here

Need a hint?

Use listOf again to create the drinks list.

3

Combine guests and drinks with zip

Create a variable called guestDrinkPairs that uses zip to combine the guests and drinks lists

Kotlin

val guests = listOf("Alice", "Bob", "Charlie")
val drinks = listOf("Coffee", "Tea", "Juice")
# Use zip to combine guests and drinks into guestDrinkPairs
# Your code here

Need a hint?

Use guests.zip(drinks) to combine the two lists.

4

Print the guest and drink pairs

Print the guestDrinkPairs list to show the pairs of guests and their favorite drinks

Kotlin

val guests = listOf("Alice", "Bob", "Charlie")
val drinks = listOf("Coffee", "Tea", "Juice")
val guestDrinkPairs = guests.zip(drinks)
# Print guestDrinkPairs below
# Your code here

Need a hint?

Use println(guestDrinkPairs) to display the pairs.