Array operations (append, insert, remove) in Swift - Mini Project: Build & Apply

Array operations (append, insert, remove)

📖 Scenario: You are managing a simple shopping list app. You need to keep track of items you want to buy.

🎯 Goal: Build a Swift program that creates a shopping list array, adds items, inserts an item at a specific position, removes an item, and then shows the final list.

📋 What You'll Learn

Create an array called shoppingList with initial items

Add a new item to the end of shoppingList using append

Insert an item at a specific position using insert

Remove an item by its value using removeAll(where:)

Print the final shoppingList array

💡 Why This Matters

🌍 Real World

Managing lists like shopping lists, to-do lists, or any collection of items is common in apps and daily tasks.

💼 Career

Understanding how to manipulate arrays is essential for many programming jobs, especially in app development and data handling.

1

Create the initial shopping list array

Create an array called shoppingList with these exact items: "Milk", "Eggs", and "Bread".

Swift

// Create the shoppingList array with initial items
// Your code here

Need a hint?

Use var shoppingList = ["Milk", "Eggs", "Bread"] to create the array.

2

Add a new item to the shopping list

Add the item "Butter" to the end of the shoppingList array using the append method.

Swift

var shoppingList = ["Milk", "Eggs", "Bread"]
// Add "Butter" to shoppingList using append
// Your code here

Need a hint?

Use shoppingList.append("Butter") to add the item.

3

Insert an item at a specific position

Insert the item "Cheese" at index 1 in the shoppingList array using the insert method.

Swift

var shoppingList = ["Milk", "Eggs", "Bread"]
shoppingList.append("Butter")
// Insert "Cheese" at index 1 in shoppingList
// Your code here

Need a hint?

Use shoppingList.insert("Cheese", at: 1) to insert the item.

4

Remove an item and print the final list

Remove the item "Eggs" from the shoppingList array using removeAll(where:). Then print the shoppingList array.

Swift

var shoppingList = ["Milk", "Eggs", "Bread"]
shoppingList.append("Butter")
shoppingList.insert("Cheese", at: 1)
// Remove "Eggs" from shoppingList
// Print shoppingList
// Your code here

Need a hint?

Use shoppingList.removeAll(where: { $0 == "Eggs" }) to remove the item, then print(shoppingList) to show the list.