From 1cf9289be90ae446f943fae900564703b2c3f4e6 Mon Sep 17 00:00:00 2001
From: Mohsen Zamani <mohsenzamanist@gmail.com>
Date: Sun, 25 Jan 2026 23:47:10 +0000
Subject: [PATCH 1/3] Sprint-1

---
 Sprint-1/1-key-exercises/1-count.js                   | 3 +++
 Sprint-1/1-key-exercises/2-initials.js                | 3 +--
 Sprint-1/1-key-exercises/3-paths.js                   | 8 +++++---
 Sprint-1/1-key-exercises/4-random.js                  | 4 ++++
 Sprint-1/2-mandatory-errors/0.js                      | 4 ++--
 Sprint-1/2-mandatory-errors/1.js                      | 4 ++--
 Sprint-1/2-mandatory-errors/2.js                      | 2 +-
 Sprint-1/2-mandatory-errors/3.js                      | 5 ++++-
 Sprint-1/2-mandatory-errors/4.js                      | 6 ++++--
 Sprint-1/3-mandatory-interpret/1-percentage-change.js | 7 ++++++-
 Sprint-1/3-mandatory-interpret/2-time-format.js       | 9 ++++++++-
 Sprint-1/3-mandatory-interpret/3-to-pounds.js         | 7 +++++++
 Sprint-1/4-stretch-explore/chrome.md                  | 3 +++
 Sprint-1/4-stretch-explore/objects.md                 | 5 +++++
 14 files changed, 55 insertions(+), 15 deletions(-)

diff --git a/Sprint-1/1-key-exercises/1-count.js b/Sprint-1/1-key-exercises/1-count.js
index 117bcb2b6..5a90f6459 100644
--- a/Sprint-1/1-key-exercises/1-count.js
+++ b/Sprint-1/1-key-exercises/1-count.js
@@ -4,3 +4,6 @@ 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
+
+// Line 3 is adding 1 to the variable count and assign it again to count using =.
+// So after line 3 the value of count is 1.
diff --git a/Sprint-1/1-key-exercises/2-initials.js b/Sprint-1/1-key-exercises/2-initials.js
index 47561f617..9f5dbcc82 100644
--- a/Sprint-1/1-key-exercises/2-initials.js
+++ b/Sprint-1/1-key-exercises/2-initials.js
@@ -5,7 +5,6 @@ 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]}`;
 
 // https://www.google.com/search?q=get+first+character+of+string+mdn
-
diff --git a/Sprint-1/1-key-exercises/3-paths.js b/Sprint-1/1-key-exercises/3-paths.js
index ab90ebb28..4b15e756b 100644
--- a/Sprint-1/1-key-exercises/3-paths.js
+++ b/Sprint-1/1-key-exercises/3-paths.js
@@ -17,7 +17,9 @@ console.log(`The base part of ${filePath} is ${base}`);
 // 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 = ;
+const dir = filePath.slice(0, lastSlashIndex);
+const ext = base.split(".")[1];
 
-// https://www.google.com/search?q=slice+mdn
\ No newline at end of file
+// https://www.google.com/search?q=slice+mdn
+console.log(dir);
+console.log(ext);
diff --git a/Sprint-1/1-key-exercises/4-random.js b/Sprint-1/1-key-exercises/4-random.js
index 292f83aab..f858d58eb 100644
--- a/Sprint-1/1-key-exercises/4-random.js
+++ b/Sprint-1/1-key-exercises/4-random.js
@@ -7,3 +7,7 @@ const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
 // 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
+
+console.log(num);
+
+// minimum <= num => maximum
diff --git a/Sprint-1/2-mandatory-errors/0.js b/Sprint-1/2-mandatory-errors/0.js
index cf6c5039f..044add7ac 100644
--- a/Sprint-1/2-mandatory-errors/0.js
+++ b/Sprint-1/2-mandatory-errors/0.js
@@ -1,2 +1,2 @@
-This is just an instruction for the first activity - but it is just for human consumption
-We don't want the computer to run these 2 lines - how can we solve this problem?
\ No newline at end of file
+// This is just an instruction for the first activity - but it is just for human consumption
+// We don't want the computer to run these 2 lines - how can we solve this problem?
diff --git a/Sprint-1/2-mandatory-errors/1.js b/Sprint-1/2-mandatory-errors/1.js
index 7a43cbea7..d919e07d8 100644
--- a/Sprint-1/2-mandatory-errors/1.js
+++ b/Sprint-1/2-mandatory-errors/1.js
@@ -1,4 +1,4 @@
 // trying to create an age variable and then reassign the value by 1
 
-const age = 33;
-age = age + 1;
+let age = 33;
+age = 1;
diff --git a/Sprint-1/2-mandatory-errors/2.js b/Sprint-1/2-mandatory-errors/2.js
index e09b89831..2865eb8a4 100644
--- a/Sprint-1/2-mandatory-errors/2.js
+++ b/Sprint-1/2-mandatory-errors/2.js
@@ -1,5 +1,5 @@
 // Currently trying to print the string "I was born in Bolton" but it isn't working...
 // what's the error ?
 
-console.log(`I was born in ${cityOfBirth}`);
 const cityOfBirth = "Bolton";
+console.log(`I was born in ${cityOfBirth}`);
diff --git a/Sprint-1/2-mandatory-errors/3.js b/Sprint-1/2-mandatory-errors/3.js
index ec101884d..d90e96a9e 100644
--- a/Sprint-1/2-mandatory-errors/3.js
+++ b/Sprint-1/2-mandatory-errors/3.js
@@ -1,5 +1,5 @@
 const cardNumber = 4533787178994213;
-const last4Digits = cardNumber.slice(-4);
+const last4Digits = String(cardNumber).slice(-4);
 
 // The last4Digits variable should store the last 4 digits of cardNumber
 // However, the code isn't working
@@ -7,3 +7,6 @@ const last4Digits = cardNumber.slice(-4);
 // 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
+
+// slice is a string method but cardNumber is a number
+console.log(Number(last4Digits));
diff --git a/Sprint-1/2-mandatory-errors/4.js b/Sprint-1/2-mandatory-errors/4.js
index 21dad8c5d..cd01b0f3b 100644
--- a/Sprint-1/2-mandatory-errors/4.js
+++ b/Sprint-1/2-mandatory-errors/4.js
@@ -1,2 +1,4 @@
-const 12HourClockTime = "20:53";
-const 24hourClockTime = "08:53";
\ No newline at end of file
+const twelveHourClockTime = "20:53";
+const twentyFourHourClockTime = "08:53";
+
+// Variable names can not start with numbers
diff --git a/Sprint-1/3-mandatory-interpret/1-percentage-change.js b/Sprint-1/3-mandatory-interpret/1-percentage-change.js
index e24ecb8e1..78f659593 100644
--- a/Sprint-1/3-mandatory-interpret/1-percentage-change.js
+++ b/Sprint-1/3-mandatory-interpret/1-percentage-change.js
@@ -2,7 +2,7 @@ let carPrice = "10,000";
 let priceAfterOneYear = "8,543";
 
 carPrice = Number(carPrice.replaceAll(",", ""));
-priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," ""));
+priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",", ""));
 
 const priceDifference = carPrice - priceAfterOneYear;
 const percentageChange = (priceDifference / carPrice) * 100;
@@ -12,11 +12,16 @@ console.log(`The percentage change is ${percentageChange}`);
 // Read the code and then answer the questions below
 
 // a) How many function calls are there in this file? Write down all the lines where a function call is made
+// 4
 
 // b) Run the code and identify the line where the error is coming from - why is this error occurring? How can you fix this problem?
+// Line 5. It is a syntaxError. string.replaceAll() is missing a ','
 
 // c) Identify all the lines that are variable reassignment statements
+// 4, 5
 
 // d) Identify all the lines that are variable declarations
+// 1, 2, 7, 8
 
 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
+// It is replacing all "," with ""(empty string) and turn it into a number data type
diff --git a/Sprint-1/3-mandatory-interpret/2-time-format.js b/Sprint-1/3-mandatory-interpret/2-time-format.js
index 47d239558..54b815b15 100644
--- a/Sprint-1/3-mandatory-interpret/2-time-format.js
+++ b/Sprint-1/3-mandatory-interpret/2-time-format.js
@@ -1,4 +1,4 @@
-const movieLength = 8784; // length of movie in seconds
+const movieLength = 8784536346344.633; // length of movie in seconds
 
 const remainingSeconds = movieLength % 60;
 const totalMinutes = (movieLength - remainingSeconds) / 60;
@@ -12,14 +12,21 @@ console.log(result);
 // For the piece of code above, read the code and then answer the following questions
 
 // a) How many variable declarations are there in this program?
+// 6
 
 // b) How many function calls are there?
+// 1
 
 // c) Using documentation, explain what the expression movieLength % 60 represents
 // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators
+// Divides movieLength by 60 and returns the remaining and assigns it to remainingSeconds
 
 // d) Interpret line 4, what does the expression assigned to totalMinutes mean?
+// It is deducting remainingSeconds from movieLength(also in seconds) and divide the result by 60, so it turns into minutes
+// and finally assign it to totalMinutes
 
 // e) What do you think the variable result represents? Can you think of a better name for this variable?
+// The duration of movie, it can be renamed to movieDuration
 
 // f) Try experimenting with different values of movieLength. Will this code work for all values of movieLength? Explain your answer
+// With float numbers, it seems to need a rounding because the result seems ugly: 2:-26:-24.63299999999981
diff --git a/Sprint-1/3-mandatory-interpret/3-to-pounds.js b/Sprint-1/3-mandatory-interpret/3-to-pounds.js
index 60c9ace69..f3b965f1a 100644
--- a/Sprint-1/3-mandatory-interpret/3-to-pounds.js
+++ b/Sprint-1/3-mandatory-interpret/3-to-pounds.js
@@ -25,3 +25,10 @@ console.log(`£${pounds}.${pence}`);
 
 // To begin, we can start with
 // 1. const penceString = "399p": initialises a string variable with the value "399p"
+// 2. Using the String.substring method, cuts the trailing p out of the string
+// 3. Using String.padStart method, makes the penceStringWithoutTrailingP to length of 3
+// by adding 0 to the left, if it is not length of 3
+// 4. Takes the first character of paddedPenceNumberString and assigns it to pounds
+// 5. Takes from position 1 of paddedPenceNumberString to the end and makes it the length of 2
+// by adding 0 to the end and assigns it to pence
+// 6. Prints the calculates pounds and pence
diff --git a/Sprint-1/4-stretch-explore/chrome.md b/Sprint-1/4-stretch-explore/chrome.md
index e7dd5feaf..b84a14a7c 100644
--- a/Sprint-1/4-stretch-explore/chrome.md
+++ b/Sprint-1/4-stretch-explore/chrome.md
@@ -11,8 +11,11 @@ In the Chrome console,
 invoke the function `alert` with an input string of `"Hello world!"`;
 
 What effect does calling the `alert` function have?
+It opens an alert window in Chrome saying "Hello world!"
 
 Now try invoking the function `prompt` with a string input of `"What is your name?"` - store the return value of your call to `prompt` in an variable called `myName`.
 
 What effect does calling the `prompt` function have?
+Opens an alert window, but waits for an input
 What is the return value of `prompt`?
+The name typed by user
diff --git a/Sprint-1/4-stretch-explore/objects.md b/Sprint-1/4-stretch-explore/objects.md
index 0216dee56..8b9856968 100644
--- a/Sprint-1/4-stretch-explore/objects.md
+++ b/Sprint-1/4-stretch-explore/objects.md
@@ -5,12 +5,17 @@ In this activity, we'll explore some additional concepts that you'll encounter i
 Open the Chrome devtools Console, type in `console.log` and then hit enter
 
 What output do you get?
+ƒ log() { [native code] }
 
 Now enter just `console` in the Console, what output do you get back?
+console {debug: ƒ, error: ƒ, info: ƒ, log: ƒ, warn: ƒ, …}
 
 Try also entering `typeof console`
+'object'
 
 Answer the following questions:
 
 What does `console` store?
+It is an object, and includes some variables and functions called methods.
 What does the syntax `console.log` or `console.assert` mean? In particular, what does the `.` mean?
+'.' helps to access the proberties of console object.

From 9fd99c21a693290f2a5b5b9ea66689ed545a407c Mon Sep 17 00:00:00 2001
From: Mohsen Zamani <mohsenzamanist@gmail.com>
Date: Mon, 26 Jan 2026 12:30:57 +0000
Subject: [PATCH 2/3] coursework/sprint-2

---
 Sprint-2/1-key-errors/0.js                    |  8 +++--
 Sprint-2/1-key-errors/1.js                    |  6 ++--
 Sprint-2/1-key-errors/2.js                    |  8 ++---
 Sprint-2/2-mandatory-debug/0.js               |  6 ++--
 Sprint-2/2-mandatory-debug/1.js               |  6 ++--
 Sprint-2/2-mandatory-debug/2.js               |  9 ++---
 Sprint-2/3-mandatory-implement/1-bmi.js       |  7 ++--
 Sprint-2/3-mandatory-implement/2-cases.js     |  3 ++
 Sprint-2/3-mandatory-implement/3-to-pounds.js | 19 ++++++++++
 Sprint-2/4-mandatory-interpret/time-format.js | 12 ++++---
 Sprint-2/5-stretch-extend/format-time.js      | 35 +++++++++++++++++--
 11 files changed, 90 insertions(+), 29 deletions(-)

diff --git a/Sprint-2/1-key-errors/0.js b/Sprint-2/1-key-errors/0.js
index 653d6f5a0..ff67056bf 100644
--- a/Sprint-2/1-key-errors/0.js
+++ b/Sprint-2/1-key-errors/0.js
@@ -1,5 +1,5 @@
 // Predict and explain first...
-//  =============> write your prediction here
+//  =============> Capitalises the first letter of the str
 
 // call the function capitalise with a string input
 // interpret the error message and figure out why an error is occurring
@@ -9,5 +9,7 @@ function capitalise(str) {
   return str;
 }
 
-// =============> write your explanation here
-// =============> write your new code here
+capitalise("mohsen");
+
+// =============> variable str is declared again inside function
+// =============> str = `${str[0].toUpperCase()}${str.slice(1)}`;
diff --git a/Sprint-2/1-key-errors/1.js b/Sprint-2/1-key-errors/1.js
index f2d56151f..b21f5b2f1 100644
--- a/Sprint-2/1-key-errors/1.js
+++ b/Sprint-2/1-key-errors/1.js
@@ -1,7 +1,7 @@
 // Predict and explain first...
 
 // Why will an error occur when this program runs?
-// =============> write your prediction here
+// =============> Instead of calling the function, a variable is called
 
 // Try playing computer with the example to work out what is going on
 
@@ -14,7 +14,7 @@ function convertToPercentage(decimalNumber) {
 
 console.log(decimalNumber);
 
-// =============> write your explanation here
+// =============> Also inside the function, decimalNumber is called again
 
 // Finally, correct the code to fix the problem
-// =============> write your new code here
+// =============> decimalNumber = 0.5;
diff --git a/Sprint-2/1-key-errors/2.js b/Sprint-2/1-key-errors/2.js
index aad57f7cf..b420fabec 100644
--- a/Sprint-2/1-key-errors/2.js
+++ b/Sprint-2/1-key-errors/2.js
@@ -3,18 +3,18 @@
 
 // this function should square any number but instead we're going to get an error
 
-// =============> write your prediction of the error here
+// =============> The variable num is not declared
 
 function square(3) {
     return num * num;
 }
 
-// =============> write the error message here
+// =============>SyntaxError: Unexpected number
 
-// =============> explain this error message here
+// =============> There must a variable declared, not just simply passing a number as an argument
 
 // Finally, correct the code to fix the problem
 
-// =============> write your new code here
+// =============> function square(num) {
 
 
diff --git a/Sprint-2/2-mandatory-debug/0.js b/Sprint-2/2-mandatory-debug/0.js
index b27511b41..68b869c71 100644
--- a/Sprint-2/2-mandatory-debug/0.js
+++ b/Sprint-2/2-mandatory-debug/0.js
@@ -1,6 +1,6 @@
 // Predict and explain first...
 
-// =============> write your prediction here
+// =============> the result of the multiply is printed inside function, and at the function call is will be undefined
 
 function multiply(a, b) {
   console.log(a * b);
@@ -8,7 +8,7 @@ function multiply(a, b) {
 
 console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
 
-// =============> write your explanation here
+// =============> because function is not returning any value
 
 // Finally, correct the code to fix the problem
-//  =============> write your new code here
+//  =============> return a * b;
diff --git a/Sprint-2/2-mandatory-debug/1.js b/Sprint-2/2-mandatory-debug/1.js
index 37cedfbcf..47cefc9db 100644
--- a/Sprint-2/2-mandatory-debug/1.js
+++ b/Sprint-2/2-mandatory-debug/1.js
@@ -1,5 +1,5 @@
 // Predict and explain first...
-//  =============> write your prediction here
+//  =============> undefined will be printed
 
 function sum(a, b) {
   return;
@@ -8,6 +8,6 @@ function sum(a, b) {
 
 console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
 
-// =============> write your explanation here
+// =============> because the function returns nothing
 // Finally, correct the code to fix the problem
-//  =============> write your new code here
+//  =============> return a + b;
diff --git a/Sprint-2/2-mandatory-debug/2.js b/Sprint-2/2-mandatory-debug/2.js
index 57d3f5dc3..5a5f484f6 100644
--- a/Sprint-2/2-mandatory-debug/2.js
+++ b/Sprint-2/2-mandatory-debug/2.js
@@ -1,11 +1,11 @@
 // Predict and explain first...
 
 // Predict the output of the following code:
-// =============> Write your prediction here
+// =============> the last digit of every function call will be 3
 
 const num = 103;
 
-function getLastDigit() {
+function getLastDigit(num) {
   return num.toString().slice(-1);
 }
 
@@ -16,9 +16,10 @@ 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
 // Explain why the output is the way it is
-// =============> write your explanation here
+// =============> function is using the num declared before it , not the number passed to it
 // Finally, correct the code to fix the problem
-// =============> write your new code here
+// =============> function getLastDigit(num) {
 
 // This program should tell the user the last digit of each number.
 // Explain why getLastDigit is not working properly - correct the problem
+// Variable num used inside the function, should be passed as an argument
diff --git a/Sprint-2/3-mandatory-implement/1-bmi.js b/Sprint-2/3-mandatory-implement/1-bmi.js
index 17b1cbde1..878747d6d 100644
--- a/Sprint-2/3-mandatory-implement/1-bmi.js
+++ b/Sprint-2/3-mandatory-implement/1-bmi.js
@@ -15,5 +15,8 @@
 // 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
-}
\ No newline at end of file
+  // return the BMI of someone based off their weight and height
+  const bmi = weight / height ** 2;
+  return bmi.toFixed(1);
+}
+console.log(calculateBMI(70, 1.73));
diff --git a/Sprint-2/3-mandatory-implement/2-cases.js b/Sprint-2/3-mandatory-implement/2-cases.js
index 5b0ef77ad..52bb44dda 100644
--- a/Sprint-2/3-mandatory-implement/2-cases.js
+++ b/Sprint-2/3-mandatory-implement/2-cases.js
@@ -14,3 +14,6 @@
 // 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
+function makeUpperSnakeCase(str) {
+  return str.toUpperCase().split(" ").join("_");
+}
diff --git a/Sprint-2/3-mandatory-implement/3-to-pounds.js b/Sprint-2/3-mandatory-implement/3-to-pounds.js
index 6265a1a70..89354d220 100644
--- a/Sprint-2/3-mandatory-implement/3-to-pounds.js
+++ b/Sprint-2/3-mandatory-implement/3-to-pounds.js
@@ -4,3 +4,22 @@
 // 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}`;
+}
diff --git a/Sprint-2/4-mandatory-interpret/time-format.js b/Sprint-2/4-mandatory-interpret/time-format.js
index 7c98eb0e8..92a81083f 100644
--- a/Sprint-2/4-mandatory-interpret/time-format.js
+++ b/Sprint-2/4-mandatory-interpret/time-format.js
@@ -17,18 +17,20 @@ function formatTimeDisplay(seconds) {
 // Questions
 
 // a) When formatTimeDisplay is called how many times will pad be called?
-// =============> write your answer here
+// =============> 3
+formatTimeDisplay(61);
 
 // 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
 
 // c) What is the return value of pad is called for the first time?
-// =============> write your answer here
+// =============> It is called return value and will be '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
+// =============> The function is passed 61 which means 1 minute and 1 second so the value passed to pad for the last call is 1
 
 // 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
+// =============> 1 is passed to function as a number and stored in num then num is turned into a string and one '0' will be added
+// to the beginning of num so the returned value will be '01'
diff --git a/Sprint-2/5-stretch-extend/format-time.js b/Sprint-2/5-stretch-extend/format-time.js
index 32a32e66b..b2dbf2855 100644
--- a/Sprint-2/5-stretch-extend/format-time.js
+++ b/Sprint-2/5-stretch-extend/format-time.js
@@ -4,8 +4,11 @@
 
 function formatAs12HourClock(time) {
   const hours = Number(time.slice(0, 2));
-  if (hours > 12) {
-    return `${hours - 12}:00 pm`;
+  const minutes = time.slice(3);
+  if (hours === 0) return `12:${minutes} am`;
+  else if (hours === 12) return `12:${minutes} pm`;
+  else if (hours > 12) {
+    return `${(hours - 12).toString().padStart(2, "0")}:${minutes} pm`;
   }
   return `${time} am`;
 }
@@ -23,3 +26,31 @@ console.assert(
   currentOutput2 === targetOutput2,
   `current output: ${currentOutput2}, target output: ${targetOutput2}`
 );
+
+const currentOutput3 = formatAs12HourClock("00:00");
+const targetOutput3 = "12:00 am";
+console.assert(
+  currentOutput3 === targetOutput3,
+  `current output: ${currentOutput3}, target output: ${targetOutput3}`
+);
+
+const currentOutput4 = formatAs12HourClock("12:00");
+const targetOutput4 = "12:00 pm";
+console.assert(
+  currentOutput4 === targetOutput4,
+  `current output: ${currentOutput4}, target output: ${targetOutput4}`
+);
+
+const currentOutput5 = formatAs12HourClock("13:06");
+const targetOutput5 = "01:06 pm";
+console.assert(
+  currentOutput5 === targetOutput5,
+  `current output: ${currentOutput5}, target output: ${targetOutput5}`
+);
+
+const currentOutput6 = formatAs12HourClock("01:56");
+const targetOutput6 = "01:56 am";
+console.assert(
+  currentOutput6 === targetOutput6,
+  `current output: ${currentOutput6}, target output: ${targetOutput6}`
+);

From b5dc2cf5154890dcb1baad4c5c90185f90e997d2 Mon Sep 17 00:00:00 2001
From: Mohsen Zamani <mohsenzamanist@gmail.com>
Date: Mon, 26 Jan 2026 13:18:08 +0000
Subject: [PATCH 3/3] undo changes in Sprint-1

---
 Sprint-1/1-key-exercises/1-count.js                   | 3 ---
 Sprint-1/1-key-exercises/2-initials.js                | 3 ++-
 Sprint-1/1-key-exercises/3-paths.js                   | 8 +++-----
 Sprint-1/1-key-exercises/4-random.js                  | 4 ----
 Sprint-1/2-mandatory-errors/0.js                      | 4 ++--
 Sprint-1/2-mandatory-errors/1.js                      | 4 ++--
 Sprint-1/2-mandatory-errors/2.js                      | 2 +-
 Sprint-1/2-mandatory-errors/3.js                      | 5 +----
 Sprint-1/2-mandatory-errors/4.js                      | 6 ++----
 Sprint-1/3-mandatory-interpret/1-percentage-change.js | 7 +------
 Sprint-1/3-mandatory-interpret/2-time-format.js       | 9 +--------
 Sprint-1/3-mandatory-interpret/3-to-pounds.js         | 7 -------
 Sprint-1/4-stretch-explore/chrome.md                  | 3 ---
 Sprint-1/4-stretch-explore/objects.md                 | 5 -----
 14 files changed, 15 insertions(+), 55 deletions(-)

diff --git a/Sprint-1/1-key-exercises/1-count.js b/Sprint-1/1-key-exercises/1-count.js
index 5a90f6459..117bcb2b6 100644
--- a/Sprint-1/1-key-exercises/1-count.js
+++ b/Sprint-1/1-key-exercises/1-count.js
@@ -4,6 +4,3 @@ 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
-
-// Line 3 is adding 1 to the variable count and assign it again to count using =.
-// So after line 3 the value of count is 1.
diff --git a/Sprint-1/1-key-exercises/2-initials.js b/Sprint-1/1-key-exercises/2-initials.js
index 9f5dbcc82..47561f617 100644
--- a/Sprint-1/1-key-exercises/2-initials.js
+++ b/Sprint-1/1-key-exercises/2-initials.js
@@ -5,6 +5,7 @@ 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 = `${firstName[0]}${middleName[0]}${lastName[0]}`;
+let initials = ``;
 
 // https://www.google.com/search?q=get+first+character+of+string+mdn
+
diff --git a/Sprint-1/1-key-exercises/3-paths.js b/Sprint-1/1-key-exercises/3-paths.js
index 4b15e756b..ab90ebb28 100644
--- a/Sprint-1/1-key-exercises/3-paths.js
+++ b/Sprint-1/1-key-exercises/3-paths.js
@@ -17,9 +17,7 @@ console.log(`The base part of ${filePath} is ${base}`);
 // 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 = filePath.slice(0, lastSlashIndex);
-const ext = base.split(".")[1];
+const dir = ;
+const ext = ;
 
-// https://www.google.com/search?q=slice+mdn
-console.log(dir);
-console.log(ext);
+// https://www.google.com/search?q=slice+mdn
\ No newline at end of file
diff --git a/Sprint-1/1-key-exercises/4-random.js b/Sprint-1/1-key-exercises/4-random.js
index f858d58eb..292f83aab 100644
--- a/Sprint-1/1-key-exercises/4-random.js
+++ b/Sprint-1/1-key-exercises/4-random.js
@@ -7,7 +7,3 @@ const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
 // 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
-
-console.log(num);
-
-// minimum <= num => maximum
diff --git a/Sprint-1/2-mandatory-errors/0.js b/Sprint-1/2-mandatory-errors/0.js
index 044add7ac..cf6c5039f 100644
--- a/Sprint-1/2-mandatory-errors/0.js
+++ b/Sprint-1/2-mandatory-errors/0.js
@@ -1,2 +1,2 @@
-// This is just an instruction for the first activity - but it is just for human consumption
-// We don't want the computer to run these 2 lines - how can we solve this problem?
+This is just an instruction for the first activity - but it is just for human consumption
+We don't want the computer to run these 2 lines - how can we solve this problem?
\ No newline at end of file
diff --git a/Sprint-1/2-mandatory-errors/1.js b/Sprint-1/2-mandatory-errors/1.js
index d919e07d8..7a43cbea7 100644
--- a/Sprint-1/2-mandatory-errors/1.js
+++ b/Sprint-1/2-mandatory-errors/1.js
@@ -1,4 +1,4 @@
 // trying to create an age variable and then reassign the value by 1
 
-let age = 33;
-age = 1;
+const age = 33;
+age = age + 1;
diff --git a/Sprint-1/2-mandatory-errors/2.js b/Sprint-1/2-mandatory-errors/2.js
index 2865eb8a4..e09b89831 100644
--- a/Sprint-1/2-mandatory-errors/2.js
+++ b/Sprint-1/2-mandatory-errors/2.js
@@ -1,5 +1,5 @@
 // Currently trying to print the string "I was born in Bolton" but it isn't working...
 // what's the error ?
 
-const cityOfBirth = "Bolton";
 console.log(`I was born in ${cityOfBirth}`);
+const cityOfBirth = "Bolton";
diff --git a/Sprint-1/2-mandatory-errors/3.js b/Sprint-1/2-mandatory-errors/3.js
index d90e96a9e..ec101884d 100644
--- a/Sprint-1/2-mandatory-errors/3.js
+++ b/Sprint-1/2-mandatory-errors/3.js
@@ -1,5 +1,5 @@
 const cardNumber = 4533787178994213;
-const last4Digits = String(cardNumber).slice(-4);
+const last4Digits = cardNumber.slice(-4);
 
 // The last4Digits variable should store the last 4 digits of cardNumber
 // However, the code isn't working
@@ -7,6 +7,3 @@ const last4Digits = String(cardNumber).slice(-4);
 // 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
-
-// slice is a string method but cardNumber is a number
-console.log(Number(last4Digits));
diff --git a/Sprint-1/2-mandatory-errors/4.js b/Sprint-1/2-mandatory-errors/4.js
index cd01b0f3b..21dad8c5d 100644
--- a/Sprint-1/2-mandatory-errors/4.js
+++ b/Sprint-1/2-mandatory-errors/4.js
@@ -1,4 +1,2 @@
-const twelveHourClockTime = "20:53";
-const twentyFourHourClockTime = "08:53";
-
-// Variable names can not start with numbers
+const 12HourClockTime = "20:53";
+const 24hourClockTime = "08:53";
\ No newline at end of file
diff --git a/Sprint-1/3-mandatory-interpret/1-percentage-change.js b/Sprint-1/3-mandatory-interpret/1-percentage-change.js
index 78f659593..e24ecb8e1 100644
--- a/Sprint-1/3-mandatory-interpret/1-percentage-change.js
+++ b/Sprint-1/3-mandatory-interpret/1-percentage-change.js
@@ -2,7 +2,7 @@ let carPrice = "10,000";
 let priceAfterOneYear = "8,543";
 
 carPrice = Number(carPrice.replaceAll(",", ""));
-priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",", ""));
+priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," ""));
 
 const priceDifference = carPrice - priceAfterOneYear;
 const percentageChange = (priceDifference / carPrice) * 100;
@@ -12,16 +12,11 @@ console.log(`The percentage change is ${percentageChange}`);
 // Read the code and then answer the questions below
 
 // a) How many function calls are there in this file? Write down all the lines where a function call is made
-// 4
 
 // b) Run the code and identify the line where the error is coming from - why is this error occurring? How can you fix this problem?
-// Line 5. It is a syntaxError. string.replaceAll() is missing a ','
 
 // c) Identify all the lines that are variable reassignment statements
-// 4, 5
 
 // d) Identify all the lines that are variable declarations
-// 1, 2, 7, 8
 
 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
-// It is replacing all "," with ""(empty string) and turn it into a number data type
diff --git a/Sprint-1/3-mandatory-interpret/2-time-format.js b/Sprint-1/3-mandatory-interpret/2-time-format.js
index 54b815b15..47d239558 100644
--- a/Sprint-1/3-mandatory-interpret/2-time-format.js
+++ b/Sprint-1/3-mandatory-interpret/2-time-format.js
@@ -1,4 +1,4 @@
-const movieLength = 8784536346344.633; // length of movie in seconds
+const movieLength = 8784; // length of movie in seconds
 
 const remainingSeconds = movieLength % 60;
 const totalMinutes = (movieLength - remainingSeconds) / 60;
@@ -12,21 +12,14 @@ console.log(result);
 // For the piece of code above, read the code and then answer the following questions
 
 // a) How many variable declarations are there in this program?
-// 6
 
 // b) How many function calls are there?
-// 1
 
 // c) Using documentation, explain what the expression movieLength % 60 represents
 // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators
-// Divides movieLength by 60 and returns the remaining and assigns it to remainingSeconds
 
 // d) Interpret line 4, what does the expression assigned to totalMinutes mean?
-// It is deducting remainingSeconds from movieLength(also in seconds) and divide the result by 60, so it turns into minutes
-// and finally assign it to totalMinutes
 
 // e) What do you think the variable result represents? Can you think of a better name for this variable?
-// The duration of movie, it can be renamed to movieDuration
 
 // f) Try experimenting with different values of movieLength. Will this code work for all values of movieLength? Explain your answer
-// With float numbers, it seems to need a rounding because the result seems ugly: 2:-26:-24.63299999999981
diff --git a/Sprint-1/3-mandatory-interpret/3-to-pounds.js b/Sprint-1/3-mandatory-interpret/3-to-pounds.js
index f3b965f1a..60c9ace69 100644
--- a/Sprint-1/3-mandatory-interpret/3-to-pounds.js
+++ b/Sprint-1/3-mandatory-interpret/3-to-pounds.js
@@ -25,10 +25,3 @@ console.log(`£${pounds}.${pence}`);
 
 // To begin, we can start with
 // 1. const penceString = "399p": initialises a string variable with the value "399p"
-// 2. Using the String.substring method, cuts the trailing p out of the string
-// 3. Using String.padStart method, makes the penceStringWithoutTrailingP to length of 3
-// by adding 0 to the left, if it is not length of 3
-// 4. Takes the first character of paddedPenceNumberString and assigns it to pounds
-// 5. Takes from position 1 of paddedPenceNumberString to the end and makes it the length of 2
-// by adding 0 to the end and assigns it to pence
-// 6. Prints the calculates pounds and pence
diff --git a/Sprint-1/4-stretch-explore/chrome.md b/Sprint-1/4-stretch-explore/chrome.md
index b84a14a7c..e7dd5feaf 100644
--- a/Sprint-1/4-stretch-explore/chrome.md
+++ b/Sprint-1/4-stretch-explore/chrome.md
@@ -11,11 +11,8 @@ In the Chrome console,
 invoke the function `alert` with an input string of `"Hello world!"`;
 
 What effect does calling the `alert` function have?
-It opens an alert window in Chrome saying "Hello world!"
 
 Now try invoking the function `prompt` with a string input of `"What is your name?"` - store the return value of your call to `prompt` in an variable called `myName`.
 
 What effect does calling the `prompt` function have?
-Opens an alert window, but waits for an input
 What is the return value of `prompt`?
-The name typed by user
diff --git a/Sprint-1/4-stretch-explore/objects.md b/Sprint-1/4-stretch-explore/objects.md
index 8b9856968..0216dee56 100644
--- a/Sprint-1/4-stretch-explore/objects.md
+++ b/Sprint-1/4-stretch-explore/objects.md
@@ -5,17 +5,12 @@ In this activity, we'll explore some additional concepts that you'll encounter i
 Open the Chrome devtools Console, type in `console.log` and then hit enter
 
 What output do you get?
-ƒ log() { [native code] }
 
 Now enter just `console` in the Console, what output do you get back?
-console {debug: ƒ, error: ƒ, info: ƒ, log: ƒ, warn: ƒ, …}
 
 Try also entering `typeof console`
-'object'
 
 Answer the following questions:
 
 What does `console` store?
-It is an object, and includes some variables and functions called methods.
 What does the syntax `console.log` or `console.assert` mean? In particular, what does the `.` mean?
-'.' helps to access the proberties of console object.