Brussels | ITP-2025-1 | Daniela Fajardo | Sprint 2 | 05 - Complete Sprint 2 Coursework/Homework

Sprint-1/1-key-exercises/1-count.js

@@ -4,3 +4,5 @@ count = count + 1;
 
 // Line 1 is a variable declaration, creating the count variable with an initial value of 0
 // Describe what line 3 is doing, in particular focus on what = is doing
+
+// The line 3 is just incrementing the counting 

Sprint-1/1-key-exercises/2-initials.js

@@ -5,7 +5,9 @@ let lastName = "Johnson";
 // Declare a variable called initials that stores the first character of each string.
 // This should produce the string "CKJ", but you must not write the characters C, K, or J in the code of your solution.
 
-let initials = ``;
+let initials = firstName[0] + middleName[0] + lastName[0];
+
+console.log(initials);
 
 // https://www.google.com/search?q=get+first+character+of+string+mdn
 

Sprint-1/1-key-exercises/3-paths.js

@@ -12,12 +12,17 @@
 const filePath = "/Users/mitch/cyf/Module-JS1/week-1/interpret/file.txt";
 const lastSlashIndex = filePath.lastIndexOf("/");
 const base = filePath.slice(lastSlashIndex + 1);
+const dir = filePath.slice(0, lastSlashIndex);
+const ext = filePath.slice(lastSlashIndex + 5);
+
 console.log(`The base part of ${filePath} is ${base}`);
+console.log(`The dir part of ${filePath} is ${dir}`);
+console.log(`The ext part of ${filePath} is ${ext}`);
+
 
 // Create a variable to store the dir part of the filePath variable
 // Create a variable to store the ext part of the variable
 
-const dir = ;
-const ext = ;
+
 
 // https://www.google.com/search?q=slice+mdn

Sprint-1/1-key-exercises/4-random.js

@@ -2,8 +2,10 @@ const minimum = 1;
 const maximum = 100;
 
 const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
-
+console.log(num);
 // In this exercise, you will need to work out what num represents?
 // Try breaking down the expression and using documentation to explain what it means
 // It will help to think about the order in which expressions are evaluated
 // Try logging the value of num and running the program several times to build an idea of what the program is doing
+
+// represents a whole random number between 1 and 100

Sprint-1/2-mandatory-errors/1.js

@@ -1,4 +1,8 @@
 // trying to create an age variable and then reassign the value by 1
-
 const age = 33;
 age = age + 1;
+
+// instead of const, we should use let because it means that the variable can change
+
+let age = 33;
+age = age + 1;

Sprint-1/2-mandatory-errors/2.js

@@ -3,3 +3,5 @@
 
 console.log(`I was born in ${cityOfBirth}`);
 const cityOfBirth = "Bolton";
+
+// the line console.log can't be before the variable

Sprint-1/2-mandatory-errors/3.js

@@ -1,9 +1,14 @@
-const cardNumber = 4533787178994213;
+const cardNumber = "4533787178994213";
 const last4Digits = cardNumber.slice(-4);
 
+console.log(last4Digits);
+
 // The last4Digits variable should store the last 4 digits of cardNumber
 // However, the code isn't working
 // Before running the code, make and explain a prediction about why the code won't work
 // Then run the code and see what error it gives.
 // Consider: Why does it give this error? Is this what I predicted? If not, what's different?
 // Then try updating the expression last4Digits is assigned to, in order to get the correct value
+
+// the .slice is a string method and the number is not a string
+

Sprint-1/2-mandatory-errors/4.js

@@ -1,2 +1,4 @@
-const 12HourClockTime = "20:53";
-const 24hourClockTime = "08:53";
+const TwelveHourClockTime = "20:53";
+const twentyFourHourClockTime = "08:53";
+
+// the name of the variable can't start with a number

Sprint-1/3-mandatory-interpret/1-percentage-change.js

@@ -1,11 +1,11 @@
-let carPrice = "10,000";
-let priceAfterOneYear = "8,543";
+let carPrice = "10,000"; // variable declaration
+let priceAfterOneYear = "8,543"; // variable declaration 
 
-carPrice = Number(carPrice.replaceAll(",", ""));
-priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," ""));
+carPrice = Number(carPrice.replaceAll(",", "")); // variable reassignment statement and function call (.replaceall is replacing the comma for a empty space and the number() is converting the string into a number value)
+priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",", "")); // variable reassignment statement and function call
 
-const priceDifference = carPrice - priceAfterOneYear;
-const percentageChange = (priceDifference / carPrice) * 100;
+const priceDifference = carPrice - priceAfterOneYear; // variable declaration
+const percentageChange = (priceDifference / carPrice) * 100; // variable declaration
 
 console.log(`The percentage change is ${percentageChange}`);
 

Sprint-2/2-mandatory-debug/0.js

@@ -1,6 +1,6 @@
 // Predict and explain first...
 
-// =============> write your prediction here
+// =============> instead of console log should be return
 
 function multiply(a, b) {
   console.log(a * b);
@@ -12,3 +12,9 @@ console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
 
 // Finally, correct the code to fix the problem
 //  =============> write your new code here
+
+function multiply(a, b) {
+  return (a * b);
+}
+
+console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);

Sprint-2/2-mandatory-debug/1.js

@@ -1,5 +1,5 @@
 // Predict and explain first...
-//  =============> write your prediction here
+//  =============> return shouldn't be separated by (;) 
 
 function sum(a, b) {
   return;
@@ -8,6 +8,12 @@ function sum(a, b) {
 
 console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
 
-// =============> write your explanation here
+// =============> semicolon ends the statement so it wouldn't return anything 
 // Finally, correct the code to fix the problem
 //  =============> write your new code here
+
+function sum(a, b) {
+  return a + b;
+}
+
+console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);

Sprint-2/2-mandatory-debug/2.js

@@ -1,8 +1,7 @@
 // Predict and explain first...
 
 // Predict the output of the following code:
-// =============> Write your prediction here
-
+// =============> the slice index can't be negative 
 const num = 103;
 
 function getLastDigit() {
@@ -14,11 +13,23 @@ console.log(`The last digit of 105 is ${getLastDigit(105)}`);
 console.log(`The last digit of 806 is ${getLastDigit(806)}`);
 
 // Now run the code and compare the output to your prediction
-// =============> write the output here
+// =============>
+// The last digit of 42 is 3
+//The last digit of 105 is 3
+//The last digit of 806 is 3
 // Explain why the output is the way it is
-// =============> write your explanation here
+// =============> the constant was declared out of the function 
 // Finally, correct the code to fix the problem
-// =============> write your new code here
+// =============> 
+
+
+function getLastDigit(num) {
+  return num.toString().slice(-1);
+}
+
+console.log(`The last digit of 42 is ${getLastDigit(42)}`);
+console.log(`The last digit of 105 is ${getLastDigit(105)}`);
+console.log(`The last digit of 806 is ${getLastDigit(806)}`);
 
 // This program should tell the user the last digit of each number.
 // Explain why getLastDigit is not working properly - correct the problem

Sprint-2/3-mandatory-implement/1-bmi.js

@@ -14,6 +14,13 @@
 // Then when we call this function with the weight and height
 // It should return their Body Mass Index to 1 decimal place
 
-function calculateBMI(weight, height) {
-    // return the BMI of someone based off their weight and height
-}
+const height = 1.70;
+const weight = 55;
+
+function calculateBMI(height, weight) { 
+    const squaredHeight = height * height;
+    const result = weight / squaredHeight;
+    return result;
+}
+
+console.log(`the Daniela's BMI is ${calculateBMI(height, weight)}`);

Sprint-2/3-mandatory-implement/2-cases.js

@@ -14,3 +14,10 @@
 // You will need to come up with an appropriate name for the function
 // Use the MDN string documentation to help you find a solution
 // This might help https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/toUpperCase
+
+
+const sentence = "hello\tworld";
+
+const result = sentence.replace("\t", "_").toUpperCase();
+
+console.log(result);

Sprint-2/3-mandatory-implement/3-to-pounds.js

@@ -4,3 +4,28 @@
 // You will need to declare a function called toPounds with an appropriately named parameter.
 
 // You should call this function a number of times to check it works for different inputs
+
+function toPounds(penceString) {
+    const penceStringWithoutTrailingP = penceString.substring(
+      0,
+      penceString.length - 1
+    );
+
+    const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(
+      3,
+      "0"
+    );
+    const pounds = paddedPenceNumberString.substring(
+      0,
+      paddedPenceNumberString.length - 2
+    );
+
+    const pence = paddedPenceNumberString
+      .substring(paddedPenceNumberString.length - 2)
+      .padEnd(2, "0");
+
+    return `£${pounds}.${pence}`;  
+}
+
+console.log(toPounds("399p"));
+console.log(toPounds("585p"));

Sprint-2/4-mandatory-interpret/time-format.js

@@ -11,24 +11,27 @@ function formatTimeDisplay(seconds) {
   return `${pad(totalHours)}:${pad(remainingMinutes)}:${pad(remainingSeconds)}`;
 }
 
+
+console.log(formatTimeDisplay(61));
+
 // You will need to play computer with this example - use the Python Visualiser https://pythontutor.com/visualize.html#mode=edit
 // to help you answer these questions
 
 // Questions
 
 // a) When formatTimeDisplay is called how many times will pad be called?
-// =============> write your answer here
+// =============> 3
 
 // Call formatTimeDisplay with an input of 61, now answer the following:
 
 // b) What is the value assigned to num when pad is called for the first time?
-// =============> write your answer here
+// =============> 0, because totalHours is 0
 
 // c) What is the return value of pad is called for the first time?
-// =============> write your answer here
+// =============> 00 
 
 // d) What is the value assigned to num when pad is called for the last time in this program?  Explain your answer
-// =============> write your answer here
+// =============> 1, because 60 is one minute and the remaining second would be 1 (61)
 
 // e) What is the return value assigned to num when pad is called for the last time in this program?  Explain your answer
-// =============> write your answer here
+// =============> 01, because the remaining seconds are padded 2 index