finished week 3

week-3/Homework/mandatory/1-practice/2-code-reading.md

@@ -14,6 +14,7 @@ Take a look at the following code:
 ```
 
 Explain why line 4 and line 6 output different numbers.
+ - because line 4 statement uses variable from line 3, and line 6 statement uses the variable from line 1
 
 ## Question 2
 
@@ -33,6 +34,9 @@ console.log(y)
 ```
 
 What will be the output of this code. Explain your answer in 50 words or less.
+- first console.log statement will print 10
+- second console statement will call the function which will print 10 again, then "undefined" will be printed because the return value of f1() is undefined
+- third statement will cause an error because y is not in the same scope
 
 ## Question 3
 
@@ -61,3 +65,6 @@ console.log(y);
 ```
 
 What will be the output of this code. Explain your answer in 50 words or less.
+- first console.log will print 9 (f1() does nothing to x because it copies the variable)
+- second console.log statement will print { x: 10 } because the object y is first created and then the variable y is modified with f2() function, since the function modifies original object, not it's copy. 
+  const allows the modification of the object attributes, but it does not allow the var y to be reassigned to another object.

week-3/Homework/mandatory/2-exercises/exercise-1/exercise-1.js

@@ -4,6 +4,8 @@ const personOne = {
     favouriteFood: 'Spinach'
 }
 
+let {name, age, favouriteFood} = personOne;
+
 function introduceYourself(___________________________) {
     console.log (`Hello, my name is ${name}. I am ${age} years old and my favourite food is ${favouriteFood}.`); 
 }

week-3/Homework/mandatory/2-exercises/exercise-2/exercise-2.js

@@ -8,4 +8,26 @@ let hogwarts = [
     { firstName: "Pomona", lastName: "Sprout", house: "Hufflepuff", pet: null, occupation: "Teacher" },
     { firstName: "Minerva", lastName: "McGonagall", house: "Gryffindor", pet: null, occupation: "Teacher" },
     { firstName: "Albus", lastName: "Dumbledore", house: "Gryffindor", pet: "Phoenix", occupation: "Teacher" }
-]
+];
+
+function displayNames(arr) {
+    for(var i = 0; i < arr.length; ++i) {
+        if (arr[i].house === "Gryffindor") {
+            let { firstName, lastName } = arr[i];
+            console.log(`${firstName} ${lastName}`);
+        }}
+}
+
+displayNames(hogwarts);
+
+console.log("");
+
+function displayNames_v2(arr) {
+    for(var i = 0; i < arr.length; ++i) {
+        if (arr[i].pet !== null  &&  arr[i].occupation === "Teacher") {
+            let { firstName, lastName } = arr[i];
+            console.log(`${firstName} ${lastName}`);
+        }}
+}
+
+displayNames_v2(hogwarts);

week-3/Homework/mandatory/2-exercises/exercise-3/exercise-3.js

@@ -6,4 +6,20 @@
      { itemName: "Hot Coffee", quantity: 2, unitPrice: 1.00},
      { itemName: "Hash Brown", quantity: 4, unitPrice: 0.40}
  ]
-
+
+function printOrder(order) {
+    let totalPrice = 0;
+    console.log(`QTY\tITEM\t\t\tTOTAL`)
+    for(let i = 0; i < order.length; ++i) {
+        let {itemName, quantity, unitPrice} = order[i];
+        totalPrice += unitPrice;
+
+        if(itemName.length > 12)
+            console.log(`${quantity}\t${itemName}\t${unitPrice.toFixed(2)}`);
+        else
+            console.log(`${quantity}\t${itemName}\t\t${unitPrice.toFixed(2)}`);
+    }
+    console.log(`\nTotal: ${totalPrice.toFixed(2)}`);
+}
+
+printOrder(order);