done

src/books.js

@@ -38,28 +38,86 @@
 
 
 // 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 work, it tells the story of Santiago..."
+    }
+  },
+  {
+    title: "The Airbnb Story",
+    pages: 256,
+    author: "Leight Gallagher",
+    details: {
+      language: "English",
+      description: "This is the remakable behind-the-scenes strory 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 Learnig",
+    pages: 288,
+    author: "Josh Waitzkin",
+    details: {
+      language: "English",
+      details: "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() {
-  // Your code here:
-
+// Your code here:
+function getBookDetails(book) {
+  return `${book.title} - ${book.author} - ${book.pages} pages`;
 }
+const bookExample = {
+  title: "The Art of Learning",
+  author: "Josh Waitzkin",
+  pages: 288,
+}
+//console.log(getBookDetails(bookExample))
+
 
 
 
 // Iteration 3 | Delete Language
 // Your code here:
+for (let i = 0; i < booksArray.length; i++) {
+  delete booksArray[i].details.language;
+}
+//console.log(booksArray)
 
 
 
 
 // Iteration 4 | Estimated Reading Time
 // Your code here:
 
+for (let i = 0; i < booksArray.length; i++) {
+  const minutes = (booksArray[i].pages * 500) / 90;
+  booksArray[i].readingTime = Math.ceil(minutes);
+}
+//console.log(booksArray)
+
+
+
+
+
 
 
 
@@ -69,32 +127,67 @@ function getBookDetails() {
  The book info is stored in arrays with structure: [title, pages]. 
 */
 const dictionary = {
-    "J. K. Rowling": [
-        ["Harry Potter and the Philosopher's Stone", 223],
-        ["Harry Potter and the Chamber of Secrets", 251],
-        ["Harry Potter and the Prisoner of Azkaban", 317],
-        ["Harry Potter and the Goblet of Fire", 636],
-    ],
-    "Neal Stephenson": [
-        ["Cryptonomicon", 928],
-        ["Anathem", 1008],
-        ["Fall; or, Dodge in Hell", 896],
-    ],
-    "Malcolm Gladwell": [
-        ["Outliers", 320],
-        ["Blink", 287],
-    ],
+  "J. K. Rowling": [
+    ["Harry Potter and the Philosopher's Stone", 223],
+    ["Harry Potter and the Chamber of Secrets", 251],
+    ["Harry Potter and the Prisoner of Azkaban", 317],
+    ["Harry Potter and the Goblet of Fire", 636],
+  ],
+  "Neal Stephenson": [
+    ["Cryptonomicon", 928],
+    ["Anathem", 1008],
+    ["Fall; or, Dodge in Hell", 896],
+  ],
+  "Malcolm Gladwell": [
+    ["Outliers", 320],
+    ["Blink", 287],
+  ],
 };
 
-function booksByAuthor() {
-  // Your code here:
-
+// Your code here:
+
+
+function booksByAuthor(dictionary) {
+  const result = [];
+
+  for (let author in dictionary) {
+    const booksArray = dictionary[author];
+
+    for (let i = 0; i < booksArray.length; i++) {
+      const book = booksArray[i];
+
+      result.push({
+        title: book[0],
+        pages: book[1],
+        author: author
+      });
+    }
+  }
+
+  return result;
 }
 
+console.log(booksByAuthor(dictionary));
 
 
 // Bonus: Iteration 6 | Average Page Count
-function averagePageCount() {
-  // Your code here:
-
+
+// Your code here:
+function averagePageCount(books) {
+  let totalPages = 0;
+
+  for (let i = 0; i < books.length; i++) {
+    totalPages += books[i].pages;
+  }
+
+  return totalPages / books.length;
 }
+
+
+console.log(averagePageCount(booksArray))
+
+
+
+
+
+