What To Buy
Part of the Fundamentals section of Coddy's Kotlin journey. Lesson 93 of 93.
Challenge
MediumWrite a function whatToBuy that takes shoppingList and alreadyBought and returns a list of items that still need to be purchased.
Filter out items from the shopping list that have already been bought, keeping only the remaining items in their original order.
Logic:
- Iterate through each item in the shopping list
- Check if the item exists in the already bought list using
containsorin - If the item is NOT in the already bought list, include it in the result
- Maintain the original order from the shopping list
Parameters:
shoppingList(List<String>): Items you need to buyalreadyBought(List<String>): Items you've already purchased
Returns: A list containing only the items that still need to be bought, in their original order (List<String>)
Try it yourself
fun whatToBuy(shoppingList: List<String>, alreadyBought: List<String>): List<String> {
// Write code here
}
All lessons in Fundamentals
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