Computer scienceProgramming languagesKotlinTypes and data structuresCollections

Comparable and Comparator

Theory

Which book is cheaper?

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You have a list of books, each of which is represented by a Book class object containing the title, author, and price fields. You need to sort this list of books by price in ascending order.

Sample Input 1:

Sample Output 1: 

1984 - George Orwell - 8.99
The Catcher in the Rye - J.D. Salinger - 9.99
To Kill a Mockingbird - Harper Lee - 10.99
The Great Gatsby - F. Scott Fitzgerald - 12.99
Write a program in Kotlin
class Book(val title: String, val author: String, val price: Double)

fun main() {
val books = listOf(
Book("The Great Gatsby", "F. Scott Fitzgerald", 12.99),
Book("To Kill a Mockingbird", "Harper Lee", 10.99),
Book("1984", "George Orwell", 8.99),
Book("The Catcher in the Rye", "J.D. Salinger", 9.99)
)

val sortedBooks = books.sortedWith(Comparator {
// put your code here
})

sortedBooks.forEach { println("${it.title} - ${it.author} - ${it.price}") }
}
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