static/chunks/766-12dbb05e2adf85ab.js","4150","static/chunks/app/courses/%5BcourseSlug%5D/lessons/%5BunitSlug%5D/page-1fc213a0f4568bd8.js"],"Image"] 3b:T647,interface WebPageElement { fun render(): String } class Header(private val text: String) : WebPageElement { override fun render(): String = "

$text

" } class Paragraph(private val text: String) : WebPageElement { override fun render(): String = "

$text

" } class ListElement(private val items: List) : WebPageElement { override fun render(): String { return items.joinToString(prefix = "

", postfix = "") { "

$it

" } } } class WebPage(private val title: String) { private val elements = mutableListOf() fun addElement(element: WebPageElement) { elements.add(element) } fun display(): String { val elementsStr = elements.joinToString("\n") { it.render() } return """ $title $elementsStr """.trimIndent() } } fun main() { val page = WebPage("My Web Page") page.addElement(Header("Welcome to My Web Page")) page.addElement(Paragraph("This is a paragraph of text on the web page.")) val items = listOf("Item 1", "Item 2", "Item 3") page.addElement(ListElement(items)) println(page.display()) /* Outputs: My Web Page

Welcome to My Web Page

This is a paragraph of text on the web page.

Item 1
Item 2
Item 3

*/ }