GLASGOW | May-2025 | Taras Mykytiuk | Module-Data-Flows | Sprint_1

Sprint-1/destructuring/exercise-1/exercise.js

@@ -6,7 +6,10 @@ const personOne = {
 
 // Update the parameter to this function to make it work.
 // Don't change anything else.
-function introduceYourself(___________________________) {
+function introduceYourself(person) {
+  const name = person.name;
+  const age = person.age;
+  const favouriteFood = person.favouriteFood;
   console.log(
     `Hello, my name is ${name}. I am ${age} years old and my favourite food is ${favouriteFood}.`
   );

Sprint-1/destructuring/exercise-2/exercise.js

@@ -70,3 +70,24 @@ let hogwarts = [
     occupation: "Teacher",
   },
 ];
+
+function displayGryffindor(hogwarts) {
+  for (const person of hogwarts) {
+    if (person.house == "Gryffindor") {
+      console.log(person.firstName + " " + person.lastName);
+    }
+  }
+}
+
+function displayTeachersWithPet(hogwarts) {
+  for (const person of hogwarts) {
+    if (person.occupation == "Teacher" && person.pet != null) {
+      console.log(person.firstName + " " + person.lastName);
+    }
+  }
+}
+console.log("Gryffindor members:")
+displayGryffindor(hogwarts);
+
+console.log("Teachers with a pet:")
+displayTeachersWithPet(hogwarts);

Sprint-1/destructuring/exercise-3/exercise.js

@@ -6,3 +6,62 @@ let order = [
   { itemName: "Hot Coffee", quantity: 2, unitPricePence: 100 },
   { itemName: "Hash Brown", quantity: 4, unitPricePence: 40 },
 ];
+
+function printOrder(order) {
+  let maxNumberLength = findLongestQuantityNumberLength(order);
+  if (maxNumberLength < 3) {
+    // length of 'QTY' word is 3
+    maxNumberLength = 3;
+  }
+  let maxNameLength = findLongestItemNameLength(order);
+  if (maxNameLength < 4) {
+    // length of 'ITEM' word is 3
+    maxNameLength = 4;
+  }
+  console.log("QTY" + " ".repeat(4) + "ITEM" + " ".repeat(maxNameLength) + "TOTAL");
+  for (const item of order) {
+    console.log(item.quantity + " ".repeat(maxNumberLength - numberDigitsQuantity(item.quantity) + 4) + item.itemName + " ".repeat(maxNameLength - item.itemName.length + 4) + convertPenceToPounds(item.unitPricePence));
+  }
+}
+
+// number of digits can be calculated from logarithm with base 10
+function numberDigitsQuantity(number) {
+  const logarithm = Math.log10(number);
+  const digitsQuantity = Math.floor(logarithm) + 1;
+  return digitsQuantity;
+}
+
+function findLongestQuantityNumberLength(order) {
+  let max = 0;
+  for (const item of order) {
+    const numberLength = numberDigitsQuantity(item.quantity)
+    if (numberLength > max) {
+      max = numberLength;
+    }
+  }
+  return max;
+}
+
+function findLongestItemNameLength(order) {
+  let max = 0;
+  for (const item of order) {
+    if (item.itemName.length > max) {
+      max = item.itemName.length;
+    }
+  }
+  return max;
+}
+
+function convertPenceToPounds(pence) {
+  const penceString = String(pence);
+  const pounds = penceString.substring(
+    0,
+    penceString.length - 2
+  );
+  const remainingPence = penceString
+    .substring(penceString.length - 2);
+
+  return `${pounds.padStart(1, "0")}.${remainingPence}`;
+}
+
+printOrder(order);