From 7887346a87cfc5ef745b81d677af23b4c41ca3a1 Mon Sep 17 00:00:00 2001
From: Moises Pastran <moilqp@gmail.com>
Date: Thu, 28 May 2026 18:12:03 +0200
Subject: [PATCH] Solved lab

---
 src/books.js | 94 +++++++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 85 insertions(+), 9 deletions(-)

diff --git a/src/books.js b/src/books.js
index c8119bb..11624eb 100644
--- a/src/books.js
+++ b/src/books.js
@@ -38,25 +38,73 @@
 
 
 // Your code here:
-const booksArray = [];
+const booksArray = [{
+  title: "The Old Man and the Sea",
+  pages: 128,
+  author: "Ernest Hemingway",
+  details: {
+    language: "English",
+    description: "One of Hemingway's most famous works, it tells the story of Santiago..."
+    }
+  },
+  {
+    title: "The Airbnb Story",
+    pages: 256,
+    author: "Leight Gallagher",
+    details: {
+      language: "English",
+      description: "This is the remarkable behind-the-scenes story of the creation and growth of Airbnb..."
+    }
+  },
+  {
+    title: "Educated - A Memoir",
+    pages: 352,
+    author: "Tara Westover",
+    details: {
+      language: "English",
+      description: "Educated is an account of the struggle for self-invention..."
+    }
+  },
+  {
+    title: "The Art of Learning",
+    pages: 288,
+    author: "Josh Waitzkin",
+    details: {
+      language: "English",
+      description: "The Art of Learning takes readers through Waitzkin's unique journey to excellence. He explains in clear detail how a well-thought-out, principled approach to learning is what separates success from failure." 
+    }
+  }
+];
 
 
 
 
 // Iteration 2 | Book Details
-function getBookDetails() {
+function getBookDetails(book) {
   // Your code here:
-
+  return book.title + " - " + book.author + " - " + book.pages + " pages";
 }
 
+console.log(getBookDetails({
+  title: "The Art of Learning",
+  pages: 288,
+  author: "Josh Waitzkin",
+  details: { /*...*/ }
+}));
 
 
 // Iteration 3 | Delete Language
 // Your code here:
 
+for (let i = 0; i < booksArray.length; i++) {
+  delete booksArray[i].details.language;
+}
 
+for (let i = 0; i < booksArray.length; i++) {
+  booksArray[i].readingTime = Math.round(booksArray[i].pages * 500 / 90);
+}
 
-
+console.log(booksArray);
 // Iteration 4 | Estimated Reading Time
 // Your code here:
 
@@ -68,7 +116,7 @@ function getBookDetails() {
 /* The `dictionary` is an object containing books grouped by author. 
  The book info is stored in arrays with structure: [title, pages]. 
 */
-const dictionary = {
+const dictionaryExample = {
     "J. K. Rowling": [
         ["Harry Potter and the Philosopher's Stone", 223],
         ["Harry Potter and the Chamber of Secrets", 251],
@@ -86,15 +134,43 @@ const dictionary = {
     ],
 };
 
-function booksByAuthor() {
+function booksByAuthor(dictionary) {
   // Your code here:
-  
+  const result = [];
+
+  // Loop through each author in the dictionary
+  for (const author in dictionary) {
+    const books = dictionary[author];
+
+    // Loop through each book of that author
+    books.forEach(book => {
+      const [title, pages] = book;
+
+      result.push({
+        title: title,
+        pages: pages,
+        author: author
+      });
+    });
+  }
+
+  return result;
 }
 
 
 
 // Bonus: Iteration 6 | Average Page Count
-function averagePageCount() {
+function averagePageCount(book) {
   // Your code here:
-  
+  let suma = 0;
+  let cont = 0;
+  let avg = 0;
+  for(let i = 0; i < book.length; i++) {
+    suma += book[i].pages;
+    cont++;
+  }
+  avg = suma / cont;
+  return avg;
 }
+
+console.log(averagePageCount(booksArray));
\ No newline at end of file