From b55215da22903f639291be9ca92e6f9d1e960bb0 Mon Sep 17 00:00:00 2001
From: mo-muchunu <mo.muchunu@gmail.com>
Date: Tue, 22 Jul 2025 15:58:21 +0100
Subject: [PATCH] Completed object and array destructuring exercises using
 filtering, looping, and reduce.

---
 Sprint-1/destructuring/exercise-1/exercise.js |  2 +-
 Sprint-1/destructuring/exercise-2/exercise.js | 16 ++++++++++++++++
 Sprint-1/destructuring/exercise-3/exercise.js | 13 +++++++++++++
 3 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/Sprint-1/destructuring/exercise-1/exercise.js b/Sprint-1/destructuring/exercise-1/exercise.js
index 1ff2ac5c..90eb4795 100644
--- a/Sprint-1/destructuring/exercise-1/exercise.js
+++ b/Sprint-1/destructuring/exercise-1/exercise.js
@@ -6,7 +6,7 @@ const personOne = {
 
 // Update the parameter to this function to make it work.
 // Don't change anything else.
-function introduceYourself(___________________________) {
+function introduceYourself({name, age, favouriteFood}) {
   console.log(
     `Hello, my name is ${name}. I am ${age} years old and my favourite food is ${favouriteFood}.`
   );
diff --git a/Sprint-1/destructuring/exercise-2/exercise.js b/Sprint-1/destructuring/exercise-2/exercise.js
index e11b75eb..866fb647 100644
--- a/Sprint-1/destructuring/exercise-2/exercise.js
+++ b/Sprint-1/destructuring/exercise-2/exercise.js
@@ -70,3 +70,19 @@ let hogwarts = [
     occupation: "Teacher",
   },
 ];
+
+
+// Task 1 ---> List all Gryffindor house members
+hogwarts                                             
+  .filter(({ house }) => house === "Gryffindor")                            // Filter the array and keep only objects with 'house' matching 'Gryffindor' 
+  .forEach(({ firstName, lastName }) => {                                   // Loop through each filtered object in filtered array, and extract first and last names
+    console.log(`${firstName} ${lastName}`);
+  });
+
+
+// Task 2 ---> names of teachers who have pets
+for (const { firstName, lastName, occupation, pet } of hogwarts) {          // Loop through array, destructuring 4 properties from each object
+  if (occupation === "Teacher" && pet) {                                    // condition to check person's occupation and pet status
+    console.log(`${firstName} ${lastName}`);
+  }
+}
diff --git a/Sprint-1/destructuring/exercise-3/exercise.js b/Sprint-1/destructuring/exercise-3/exercise.js
index b3a36f4e..29b61275 100644
--- a/Sprint-1/destructuring/exercise-3/exercise.js
+++ b/Sprint-1/destructuring/exercise-3/exercise.js
@@ -6,3 +6,16 @@ let order = [
   { itemName: "Hot Coffee", quantity: 2, unitPricePence: 100 },
   { itemName: "Hash Brown", quantity: 4, unitPricePence: 40 },
 ];
+
+// Print receipt for takeout order
+console.log("QTY     ITEM                TOTAL");                                             // Print receipt header row with even spacing for 3 columns 
+
+const orderTotal = order.reduce((sum, { itemName, quantity, unitPricePence }) => {            // Using reduce() to process each item in 'order' array and sum() to tally total order cost
+  const itemPriceTotal = (unitPricePence * quantity) / 100;                                   // Destructure for required unit price and quantity values from each object: calculate in then divide by 100 for total in pounds
+  console.log(  
+    `${quantity.toString().padEnd(8)}${itemName.padEnd(20)}${itemPriceTotal.toFixed(2)}`      // Add spacing to align row output neatly and format total prices to 2 decimal places
+  );
+  return sum + itemPriceTotal;                                                                // Add item's total price to the running sum
+}, 0);
+
+console.log(`\nTotal: ${orderTotal.toFixed(2)}`);                                              // Print final total cost, formatted to 2 decimal places- on a new line