From 2300ec7505b2d9c3c2f0bd69aecfd4ccf3c358a2 Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Sun, 20 Sep 2026 19:53:16 +0100
Subject: [PATCH 01/27] Add comments for count variable and assignment

Added comments to explain variable declaration and assignment.
---
 Sprint-2/1-key-exercises/1-count.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Sprint-2/1-key-exercises/1-count.js b/Sprint-2/1-key-exercises/1-count.js
index 117bcb2b6..bf906426d 100644
--- a/Sprint-2/1-key-exercises/1-count.js
+++ b/Sprint-2/1-key-exercises/1-count.js
@@ -3,4 +3,5 @@ let count = 0;
 count = count + 1;
 
 // Line 1 is a variable declaration, creating the count variable with an initial value of 0
+// Describe whaWt line 3 is doing, in particular focus on what = is doing
 // Describe what line 3 is doing, in particular focus on what = is doing

From a9cb5667309b27b91f584b14acd55487e74b614b Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Tue, 29 Sep 2026 11:23:49 +0100
Subject: [PATCH 02/27] Fix capitalise function variable redeclaration

---
 Sprint-3/1-key-errors/0.js | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/Sprint-3/1-key-errors/0.js b/Sprint-3/1-key-errors/0.js
index 653d6f5a0..7c0a64325 100644
--- a/Sprint-3/1-key-errors/0.js
+++ b/Sprint-3/1-key-errors/0.js
@@ -1,7 +1,14 @@
 // Predict and explain first...
-//  =============> write your prediction here
-
+//  =============> We will have syntax error because string is the parameter of the function and the next line,it is declared wit let
+//so it is declared two times in one part 
 // call the function capitalise with a string input
+
+
+function capitalise(str) {
+  str = `${str[0].toUpperCase()}${str.slice(1)}`;
+  return str;
+}
+console.log(capitalise("mother"));
 // interpret the error message and figure out why an error is occurring
 
 function capitalise(str) {
@@ -9,5 +16,8 @@ function capitalise(str) {
   return str;
 }
 
-// =============> write your explanation here
-// =============> write your new code here
+// =============> write your explanation here     SyntaxError: Identifier 'str' has already been declared
+// =============> write your new code here.       
+ function capitalise(str) {
+  return `${str[0].toUpperCase()}${str.slice(1)}`;
+}

From a729effd278e6664b94739fb0e8e9eca0a21dba3 Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Tue, 29 Sep 2026 11:28:18 +0100
Subject: [PATCH 03/27] Fix capitalise function variable redeclaration

---
 Sprint-3/1-key-errors/0.js | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/Sprint-3/1-key-errors/0.js b/Sprint-3/1-key-errors/0.js
index 7c0a64325..cc63935bc 100644
--- a/Sprint-3/1-key-errors/0.js
+++ b/Sprint-3/1-key-errors/0.js
@@ -1,9 +1,8 @@
 // Predict and explain first...
 //  =============> We will have syntax error because string is the parameter of the function and the next line,it is declared wit let
-//so it is declared two times in one part 
+//so it is declared two times in one part
 // call the function capitalise with a string input
 
-
 function capitalise(str) {
   str = `${str[0].toUpperCase()}${str.slice(1)}`;
   return str;
@@ -17,7 +16,7 @@ function capitalise(str) {
 }
 
 // =============> write your explanation here     SyntaxError: Identifier 'str' has already been declared
-// =============> write your new code here.       
- function capitalise(str) {
+// =============> write your new code here.
+function capitalise(str) {
   return `${str[0].toUpperCase()}${str.slice(1)}`;
 }

From 7cd8ae3cbc5b6a5415d76d2f33d785986d72fc35 Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Tue, 29 Sep 2026 12:30:56 +0100
Subject: [PATCH 04/27] fix percentage conversion variable redeclaration

---
 Sprint-3/1-key-errors/1.js | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/Sprint-3/1-key-errors/1.js b/Sprint-3/1-key-errors/1.js
index f2d56151f..735e546bf 100644
--- a/Sprint-3/1-key-errors/1.js
+++ b/Sprint-3/1-key-errors/1.js
@@ -1,7 +1,9 @@
-// Predict and explain first...
+// Predict and explain first...:It doesn't run.We have a syntaxError.
 
-// Why will an error occur when this program runs?
-// =============> write your prediction here
+// Why will an error occur when this program runs?because decimalNumber is declared.
+// as a parameter and then declared again using const.
+
+// =============> write your prediction here:We will have a SyntaxError because decimalNumber is  a parameter of the function, but it is declared again using const inside the function.
 
 // Try playing computer with the example to work out what is going on
 
@@ -14,7 +16,14 @@ function convertToPercentage(decimalNumber) {
 
 console.log(decimalNumber);
 
-// =============> write your explanation here
+// =============> write your explanation here:decimalNumber is inside the function, so we can not use it outside the function.
 
 // Finally, correct the code to fix the problem
 // =============> write your new code here
+function convertToPercentage(decimalNumber) {
+  const percentage = `${decimalNumber * 100}%`;
+ ca
+  return percentage;
+}
+
+console.log(convertToPercentage(0.5));

From a128bbf0c3be5ce748cc877397dac09331039c2f Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Thu, 1 Oct 2026 16:09:54 +0100
Subject: [PATCH 05/27] Fix square function parameter

---
 Sprint-3/1-key-errors/2.js | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/Sprint-3/1-key-errors/2.js b/Sprint-3/1-key-errors/2.js
index aad57f7cf..9abe6d2e6 100644
--- a/Sprint-3/1-key-errors/2.js
+++ b/Sprint-3/1-key-errors/2.js
@@ -3,18 +3,23 @@
 
 // this function should square any number but instead we're going to get an error
 
-// =============> write your prediction of the error here
+// =============> write your prediction of the error here:We will have a SyntaxError because we need a valid function parameter. 
 
 function square(3) {
     return num * num;
 }
 
-// =============> write the error message here
+// =============> write the error message here:SyntaxError: Unexpected number
 
-// =============> explain this error message here
+// =============> explain this error message here:function square(3) {
+//3 is a number, not a valid variable. Program expects a parameter name there.
 
 // Finally, correct the code to fix the problem
 
-// =============> write your new code here
+// =============> write your new code here:
+function square(num) {
+    return num * num;
+}
 
+console.log(square(3));
 

From 1d044cbe15112f171f412b4bca88042a986486c9 Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Thu, 1 Oct 2026 16:57:31 +0100
Subject: [PATCH 06/27] Fix multiply function to return result

---
 Sprint-3/2-mandatory-debug/0.js | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/Sprint-3/2-mandatory-debug/0.js b/Sprint-3/2-mandatory-debug/0.js
index b27511b41..30b0c5bcd 100644
--- a/Sprint-3/2-mandatory-debug/0.js
+++ b/Sprint-3/2-mandatory-debug/0.js
@@ -1,6 +1,7 @@
 // Predict and explain first...
 
-// =============> write your prediction here
+// =============> write your prediction here:
+//The code will run, but the output won't be what we expect because the multiply function logs the result instead of returning it.
 
 function multiply(a, b) {
   console.log(a * b);
@@ -8,7 +9,14 @@ function multiply(a, b) {
 
 console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
 
-// =============> write your explanation here
-
+// =============> write your explanation here:console.log(a * b);
+//The result is 320, but the function doesn't return a value. It shows us undefined because we don't have return in the function.
+//320
+//The result of multiplying 10 and 32 is undefined
 // Finally, correct the code to fix the problem
-//  =============> write your new code here
+//  =============> 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)}`);

From d1a35bcd17a7544e333cc5a1d055b96cdd931f25 Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Thu, 1 Oct 2026 17:38:42 +0100
Subject: [PATCH 07/27] Fix sum function return statement

---
 Sprint-3/2-mandatory-debug/1.js | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/Sprint-3/2-mandatory-debug/1.js b/Sprint-3/2-mandatory-debug/1.js
index 37cedfbcf..e17f83ae6 100644
--- a/Sprint-3/2-mandatory-debug/1.js
+++ b/Sprint-3/2-mandatory-debug/1.js
@@ -1,5 +1,6 @@
 // Predict and explain first...
-//  =============> write your prediction here
+//  =============> write your prediction here:This is the error:The sum of 10 and 32 is undefined.
+// The code will run without a syntax error, but it will return undefined instead of 42.
 
 function sum(a, b) {
   return;
@@ -8,6 +9,15 @@ function sum(a, b) {
 
 console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
 
-// =============> write your explanation here
+// =============> write your explanation here:
+//The problem is that return; immediately ends the function://return;
+//a + b;
+
+//if we write anything after return(next line)is unreachable, so a + b doesn't run. The function therefore returns undefined.
 // 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)}`);

From 35c7d91ba223b082358c9ea8294c12b4cb4d45c2 Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Thu, 1 Oct 2026 18:23:47 +0100
Subject: [PATCH 08/27] Fix getLastDigit function parameter

---
 Sprint-3/2-mandatory-debug/2.js | 25 +++++++++++++++++++++----
 1 file changed, 21 insertions(+), 4 deletions(-)

diff --git a/Sprint-3/2-mandatory-debug/2.js b/Sprint-3/2-mandatory-debug/2.js
index 57d3f5dc3..85b8cdad3 100644
--- a/Sprint-3/2-mandatory-debug/2.js
+++ b/Sprint-3/2-mandatory-debug/2.js
@@ -1,7 +1,7 @@
 // Predict and explain first...
 
 // Predict the output of the following code:
-// =============> Write your prediction here
+// =============> Write your prediction here:I predict the output will be 3 every time, because the function uses the global constant num = 103 instead of using the numbers passed into getLastDigit().
 
 const num = 103;
 
@@ -14,11 +14,28 @@ 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
+// =============> 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
+// =============> write your explanation here:there is no parameter in the function.
+//So when we call the function:
+//getLastDigit(42)
+//the 42 is passed to the function, but the function has no parameter to receive it.
+//Instead, it uses the global variable (const num = 103)
+//so every call converts 103 to a string and gets its last digit: 3.
 // Finally, correct the code to fix the problem
-// =============> write your new code here
+// =============> write your new code here:
+const num = 103;
+
+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

From 2d78dfc6958ea1b38c3909264c29a65a43c159b1 Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Thu, 1 Oct 2026 18:34:16 +0100
Subject: [PATCH 09/27] Implement BMI calculation function

---
 Sprint-3/3-mandatory-implement/1-bmi.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Sprint-3/3-mandatory-implement/1-bmi.js b/Sprint-3/3-mandatory-implement/1-bmi.js
index 58b1085f1..9c2556516 100644
--- a/Sprint-3/3-mandatory-implement/1-bmi.js
+++ b/Sprint-3/3-mandatory-implement/1-bmi.js
@@ -15,5 +15,7 @@
 // It should return a string of their Body Mass Index to 1 decimal place
 
 function calculateBMI(weight, height) {
-  // return the BMI of someone based off their weight and height
+  const bmi = weight / (height * height);
+  return bmi.toFixed(1);
 }
+// return the BMI of someone based off their weight and height

From 69567327adfde14c94d44612662877f0d3d6ce67 Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Thu, 1 Oct 2026 18:47:40 +0100
Subject: [PATCH 10/27] Implement UPPER_SNAKE_CASE conversion function

---
 Sprint-3/3-mandatory-implement/2-cases.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Sprint-3/3-mandatory-implement/2-cases.js b/Sprint-3/3-mandatory-implement/2-cases.js
index 5b0ef77ad..91b0012d8 100644
--- a/Sprint-3/3-mandatory-implement/2-cases.js
+++ b/Sprint-3/3-mandatory-implement/2-cases.js
@@ -14,3 +14,9 @@
 // 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 toUpperSnakeCase(str) {
+  return str.replaceAll(" ", "_").toUpperCase();
+}
+
+console.log(toUpperSnakeCase("hello there"));
+console.log(toUpperSnakeCase("lord of the rings"));

From 76ac665fd1b241355f1fbaaed0c2df877f4a689f Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Thu, 1 Oct 2026 20:01:42 +0100
Subject: [PATCH 11/27] converting the function  into reusable toPounds
 function

---
 Sprint-2/3-mandatory-interpret/3-to-pounds.js |  4 ++--
 Sprint-3/3-mandatory-implement/3-to-pounds.js | 24 +++++++++++++++++++
 2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/Sprint-2/3-mandatory-interpret/3-to-pounds.js b/Sprint-2/3-mandatory-interpret/3-to-pounds.js
index 60c9ace69..f47e26f2c 100644
--- a/Sprint-2/3-mandatory-interpret/3-to-pounds.js
+++ b/Sprint-2/3-mandatory-interpret/3-to-pounds.js
@@ -2,13 +2,13 @@ const penceString = "399p";
 
 const penceStringWithoutTrailingP = penceString.substring(
   0,
-  penceString.length - 1
+  penceString.length - 1,
 );
 
 const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0");
 const pounds = paddedPenceNumberString.substring(
   0,
-  paddedPenceNumberString.length - 2
+  paddedPenceNumberString.length - 2,
 );
 
 const pence = paddedPenceNumberString
diff --git a/Sprint-3/3-mandatory-implement/3-to-pounds.js b/Sprint-3/3-mandatory-implement/3-to-pounds.js
index 10754da73..0f94a2cf3 100644
--- a/Sprint-3/3-mandatory-implement/3-to-pounds.js
+++ b/Sprint-3/3-mandatory-implement/3-to-pounds.js
@@ -4,3 +4,27 @@
 // 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("250p"));
+console.log(toPounds("99p"));
+console.log(toPounds("5p"));

From 0b2d01cabe56a37cf80768daf08cffbdf720cd94 Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Thu, 1 Oct 2026 20:37:02 +0100
Subject: [PATCH 12/27] writing the answers of formatTimeDisplay function

---
 Sprint-3/4-mandatory-interpret/time-format.js | 33 ++++++++++++++++---
 1 file changed, 28 insertions(+), 5 deletions(-)

diff --git a/Sprint-3/4-mandatory-interpret/time-format.js b/Sprint-3/4-mandatory-interpret/time-format.js
index c0dd9c9a5..88f9b2558 100644
--- a/Sprint-3/4-mandatory-interpret/time-format.js
+++ b/Sprint-3/4-mandatory-interpret/time-format.js
@@ -21,18 +21,41 @@ function formatTimeDisplay(seconds) {
 // Questions
 
 // a) When formatTimeDisplay is called how many times will pad be called?
-// =============> write your answer here
+// =============> write your answer here: three calls to pad() in the return statement:
+//return `${pad(totalHours)}:${pad(remainingMinutes)}:${pad(remainingSeconds)}`;
 
 // 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
+// =============> write your answer here:
+//For formatTimeDisplay(61):
+//remainingSeconds = 61 % 60 = 1
+//totalMinutes = (61 - 1) / 60 → 1
+//remainingMinutes = 1 % 60 → 1
+//totalHours = (1 - 1) / 60 → 0
+//num = 1
 
 // c) What is the return value of pad when it is called for the first time?
-// =============> write your answer here
+// =============> write your answer here:num is 0.
+//let numString = num.toString(); gives us 0
+
+// This loop adds a "0" because the string has only one character:
+//numString = "0" + "0";
+//return value is:
+//"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
+// =============> write your answer here:
+//The last call is:   pad(remainingSeconds)
+
+//For 61 seconds, remainingSeconds is 61 % 60 = 1:
+//so num = 1
 
 // e) What is the return value of pad when it is called for the last time in this program?  Explain your answer
-// =============> write your answer here
+// =============> write your answer here:
+//num is 1, so:
+//num.toString() gives "1".
+
+// and this loop adds a 0 to the beginning: "01"
+
+//So the final result of formatTimeDisplay(61) is: 00:01:01

From c287e7c4c144a80fc8e68b263cb67d79ef4166ce Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Tue, 6 Oct 2026 12:11:09 +0100
Subject: [PATCH 13/27] Clean up comments in time-format.js

Removed placeholder comments and explanations in time-format.js.
---
 Sprint-3/4-mandatory-interpret/time-format.js | 33 +++----------------
 1 file changed, 5 insertions(+), 28 deletions(-)

diff --git a/Sprint-3/4-mandatory-interpret/time-format.js b/Sprint-3/4-mandatory-interpret/time-format.js
index 88f9b2558..c0dd9c9a5 100644
--- a/Sprint-3/4-mandatory-interpret/time-format.js
+++ b/Sprint-3/4-mandatory-interpret/time-format.js
@@ -21,41 +21,18 @@ function formatTimeDisplay(seconds) {
 // Questions
 
 // a) When formatTimeDisplay is called how many times will pad be called?
-// =============> write your answer here: three calls to pad() in the return statement:
-//return `${pad(totalHours)}:${pad(remainingMinutes)}:${pad(remainingSeconds)}`;
+// =============> write your answer here
 
 // 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:
-//For formatTimeDisplay(61):
-//remainingSeconds = 61 % 60 = 1
-//totalMinutes = (61 - 1) / 60 → 1
-//remainingMinutes = 1 % 60 → 1
-//totalHours = (1 - 1) / 60 → 0
-//num = 1
+// =============> write your answer here
 
 // c) What is the return value of pad when it is called for the first time?
-// =============> write your answer here:num is 0.
-//let numString = num.toString(); gives us 0
-
-// This loop adds a "0" because the string has only one character:
-//numString = "0" + "0";
-//return value is:
-//"00"
+// =============> write your answer here
 
 // 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 last call is:   pad(remainingSeconds)
-
-//For 61 seconds, remainingSeconds is 61 % 60 = 1:
-//so num = 1
+// =============> write your answer here
 
 // e) What is the return value of pad when it is called for the last time in this program?  Explain your answer
-// =============> write your answer here:
-//num is 1, so:
-//num.toString() gives "1".
-
-// and this loop adds a 0 to the beginning: "01"
-
-//So the final result of formatTimeDisplay(61) is: 00:01:01
+// =============> write your answer here

From 10d77c63b85686ad7d1c453e41ce6a0bd6894b8a Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Tue, 6 Oct 2026 13:06:45 +0100
Subject: [PATCH 14/27] Enhance comments in time-format.js for clarity

Added comments to explain the behavior of the pad function and its calls in formatTimeDisplay.
---
 Sprint-3/4-mandatory-interpret/time-format.js | 33 ++++++++++++++++---
 1 file changed, 28 insertions(+), 5 deletions(-)

diff --git a/Sprint-3/4-mandatory-interpret/time-format.js b/Sprint-3/4-mandatory-interpret/time-format.js
index c0dd9c9a5..88f9b2558 100644
--- a/Sprint-3/4-mandatory-interpret/time-format.js
+++ b/Sprint-3/4-mandatory-interpret/time-format.js
@@ -21,18 +21,41 @@ function formatTimeDisplay(seconds) {
 // Questions
 
 // a) When formatTimeDisplay is called how many times will pad be called?
-// =============> write your answer here
+// =============> write your answer here: three calls to pad() in the return statement:
+//return `${pad(totalHours)}:${pad(remainingMinutes)}:${pad(remainingSeconds)}`;
 
 // 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
+// =============> write your answer here:
+//For formatTimeDisplay(61):
+//remainingSeconds = 61 % 60 = 1
+//totalMinutes = (61 - 1) / 60 → 1
+//remainingMinutes = 1 % 60 → 1
+//totalHours = (1 - 1) / 60 → 0
+//num = 1
 
 // c) What is the return value of pad when it is called for the first time?
-// =============> write your answer here
+// =============> write your answer here:num is 0.
+//let numString = num.toString(); gives us 0
+
+// This loop adds a "0" because the string has only one character:
+//numString = "0" + "0";
+//return value is:
+//"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
+// =============> write your answer here:
+//The last call is:   pad(remainingSeconds)
+
+//For 61 seconds, remainingSeconds is 61 % 60 = 1:
+//so num = 1
 
 // e) What is the return value of pad when it is called for the last time in this program?  Explain your answer
-// =============> write your answer here
+// =============> write your answer here:
+//num is 1, so:
+//num.toString() gives "1".
+
+// and this loop adds a 0 to the beginning: "01"
+
+//So the final result of formatTimeDisplay(61) is: 00:01:01

From 54f45d7bc57988d7380835219c3f0c785bca89e1 Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Tue, 6 Oct 2026 20:46:21 +0100
Subject: [PATCH 15/27] fix wrong changes

---
 Sprint-2/1-key-exercises/3-paths.js           |  9 ++++----
 Sprint-2/2-mandatory-errors/4.js              |  5 +++--
 .../1-percentage-change.js                    | 21 +++++++++++++++++--
 3 files changed, 27 insertions(+), 8 deletions(-)

diff --git a/Sprint-2/1-key-exercises/3-paths.js b/Sprint-2/1-key-exercises/3-paths.js
index ab90ebb28..434bd6e8e 100644
--- a/Sprint-2/1-key-exercises/3-paths.js
+++ b/Sprint-2/1-key-exercises/3-paths.js
@@ -16,8 +16,9 @@ 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 = filePath.slice(0, lastSlashIndex);
+console.log(`The direction of the file is ${dir}`);
+const ext = filePath.slice(filePath.lastIndexOf(".") + 1);
+console.log(`The extenction of the file is ${ext}`);
 
-const dir = ;
-const ext = ;
-
-// https://www.google.com/search?q=slice+mdn
\ No newline at end of file
+// https://www.google.com/search?q=slice+mdn
diff --git a/Sprint-2/2-mandatory-errors/4.js b/Sprint-2/2-mandatory-errors/4.js
index 5f86c730b..65111a62c 100644
--- a/Sprint-2/2-mandatory-errors/4.js
+++ b/Sprint-2/2-mandatory-errors/4.js
@@ -1,2 +1,3 @@
-const 12HourClockTime = "8:53pm";
-const 24hourClockTime = "20:53";
+const twelveHourClockTime = "8:53pm";
+const twentyFourHourClockTime = "20:53";
+// a variable name cannot start with a number and it will cause a SyntaxError
diff --git a/Sprint-2/3-mandatory-interpret/1-percentage-change.js b/Sprint-2/3-mandatory-interpret/1-percentage-change.js
index e24ecb8e1..2cd1005c3 100644
--- a/Sprint-2/3-mandatory-interpret/1-percentage-change.js
+++ b/Sprint-2/3-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;
@@ -11,12 +11,29 @@ 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
+// a) How many function calls are there in this file? Write down all the lines where a function call is made?
+//There are 5 function calls:
+//replaceAll
+//Line 4 and 5
+//Number(...)
+//Line 4 and 5
+//console.log()
+//Line 10 ,
 
 // 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?
+//error:line 5,SyntaxError: missing ) after argument list,there is a missing comma between the two arguments "," and " "
 
 // c) Identify all the lines that are variable reassignment statements
+//carPrice = Number(carPrice.replaceAll(",", ""));
+//priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",", ""));
 
 // d) Identify all the lines that are variable declarations
+//let carPrice
+//let priceAfterOneYear
+//const priceDifference
+//const percentageChange
 
 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
+//it removes all commas from the string
+//converts the string "10000" into the number 10000
+//The purpose is to turn the price from a formatted string into a number

From e9e592eef18c4fba076df37cb58aa7551b99a32a Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Sun, 11 Oct 2026 18:09:39 +0100
Subject: [PATCH 16/27] revert changes

---
 Sprint-2/1-key-exercises/3-paths.js | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/Sprint-2/1-key-exercises/3-paths.js b/Sprint-2/1-key-exercises/3-paths.js
index 434bd6e8e..433c72934 100644
--- a/Sprint-2/1-key-exercises/3-paths.js
+++ b/Sprint-2/1-key-exercises/3-paths.js
@@ -16,9 +16,8 @@ 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);
-console.log(`The direction of the file is ${dir}`);
-const ext = filePath.slice(filePath.lastIndexOf(".") + 1);
-console.log(`The extenction of the file is ${ext}`);
+
+const dir = ;
+const ext = ;
 
 // https://www.google.com/search?q=slice+mdn

From 4815e4cc5003841e6d46b6f5f9677de79d4277c0 Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Sun, 11 Oct 2026 18:11:31 +0100
Subject: [PATCH 17/27] revert changes

---
 Sprint-2/2-mandatory-errors/4.js | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/Sprint-2/2-mandatory-errors/4.js b/Sprint-2/2-mandatory-errors/4.js
index 65111a62c..5f86c730b 100644
--- a/Sprint-2/2-mandatory-errors/4.js
+++ b/Sprint-2/2-mandatory-errors/4.js
@@ -1,3 +1,2 @@
-const twelveHourClockTime = "8:53pm";
-const twentyFourHourClockTime = "20:53";
-// a variable name cannot start with a number and it will cause a SyntaxError
+const 12HourClockTime = "8:53pm";
+const 24hourClockTime = "20:53";

From e1c461b2d6e147cc457757c1327e0fe0d07fcdf3 Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Sun, 11 Oct 2026 18:12:38 +0100
Subject: [PATCH 18/27] revert changes

---
 .../1-percentage-change.js                    | 21 ++-----------------
 1 file changed, 2 insertions(+), 19 deletions(-)

diff --git a/Sprint-2/3-mandatory-interpret/1-percentage-change.js b/Sprint-2/3-mandatory-interpret/1-percentage-change.js
index 2cd1005c3..e24ecb8e1 100644
--- a/Sprint-2/3-mandatory-interpret/1-percentage-change.js
+++ b/Sprint-2/3-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;
@@ -11,29 +11,12 @@ 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?
-//There are 5 function calls:
-//replaceAll
-//Line 4 and 5
-//Number(...)
-//Line 4 and 5
-//console.log()
-//Line 10 ,
+// a) How many function calls are there in this file? Write down all the lines where a function call is made
 
 // 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?
-//error:line 5,SyntaxError: missing ) after argument list,there is a missing comma between the two arguments "," and " "
 
 // c) Identify all the lines that are variable reassignment statements
-//carPrice = Number(carPrice.replaceAll(",", ""));
-//priceAfterOneYear = Number(priceAfterOneYear.replaceAll(",", ""));
 
 // d) Identify all the lines that are variable declarations
-//let carPrice
-//let priceAfterOneYear
-//const priceDifference
-//const percentageChange
 
 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
-//it removes all commas from the string
-//converts the string "10000" into the number 10000
-//The purpose is to turn the price from a formatted string into a number

From 7a13accf5215fa7e94d09c528078532ab874fe5d Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Sun, 11 Oct 2026 18:17:45 +0100
Subject: [PATCH 19/27] revert changes

Removed duplicate comment and fixed typo.
---
 Sprint-2/1-key-exercises/1-count.js | 1 -
 1 file changed, 1 deletion(-)

diff --git a/Sprint-2/1-key-exercises/1-count.js b/Sprint-2/1-key-exercises/1-count.js
index bf906426d..117bcb2b6 100644
--- a/Sprint-2/1-key-exercises/1-count.js
+++ b/Sprint-2/1-key-exercises/1-count.js
@@ -3,5 +3,4 @@ let count = 0;
 count = count + 1;
 
 // Line 1 is a variable declaration, creating the count variable with an initial value of 0
-// Describe whaWt line 3 is doing, in particular focus on what = is doing
 // Describe what line 3 is doing, in particular focus on what = is doing

From fd9940e2b84856b6a8f1894aa58604880379b90a Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Sun, 11 Oct 2026 18:19:43 +0100
Subject: [PATCH 20/27] revert changes


From fa1b84beb739e11249546ded8823b511b53cb8eb Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Sun, 11 Oct 2026 18:21:10 +0100
Subject: [PATCH 21/27] Fix syntax errors in paths.js

---
 Sprint-2/1-key-exercises/3-paths.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Sprint-2/1-key-exercises/3-paths.js b/Sprint-2/1-key-exercises/3-paths.js
index 433c72934..f93e7f69a 100644
--- a/Sprint-2/1-key-exercises/3-paths.js
+++ b/Sprint-2/1-key-exercises/3-paths.js
@@ -21,3 +21,4 @@ const dir = ;
 const ext = ;
 
 // https://www.google.com/search?q=slice+mdn
+

From 37ef650b6f5274bc521cf8b69eb2b62b70b0765d Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Sun, 11 Oct 2026 18:21:36 +0100
Subject: [PATCH 22/27] Remove empty variable assignments in paths.js

---
 Sprint-2/1-key-exercises/3-paths.js | 1 -
 1 file changed, 1 deletion(-)

diff --git a/Sprint-2/1-key-exercises/3-paths.js b/Sprint-2/1-key-exercises/3-paths.js
index f93e7f69a..433c72934 100644
--- a/Sprint-2/1-key-exercises/3-paths.js
+++ b/Sprint-2/1-key-exercises/3-paths.js
@@ -21,4 +21,3 @@ const dir = ;
 const ext = ;
 
 // https://www.google.com/search?q=slice+mdn
-

From f98fb5e1ed7b81d4f4ba953e955e29184d20120e Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Sun, 11 Oct 2026 18:22:18 +0100
Subject: [PATCH 23/27] revert changes


From 2adce383af81e2f960fadd7169bbf9705369a063 Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Sun, 11 Oct 2026 18:22:58 +0100
Subject: [PATCH 24/27] Delete Sprint-2/1-key-exercises/3-paths.js

---
 Sprint-2/1-key-exercises/3-paths.js | 23 -----------------------
 1 file changed, 23 deletions(-)
 delete mode 100644 Sprint-2/1-key-exercises/3-paths.js

diff --git a/Sprint-2/1-key-exercises/3-paths.js b/Sprint-2/1-key-exercises/3-paths.js
deleted file mode 100644
index 433c72934..000000000
--- a/Sprint-2/1-key-exercises/3-paths.js
+++ /dev/null
@@ -1,23 +0,0 @@
-// The diagram below shows the different names for parts of a file path on a Unix operating system
-
-// ┌─────────────────────┬────────────┐
-// │          dir        │    base    │
-// ├──────┬              ├──────┬─────┤
-// │ root │              │ name │ ext │
-// "  /    home/user/dir / file  .txt "
-// └──────┴──────────────┴──────┴─────┘
-
-// (All spaces in the "" line should be ignored. They are purely for formatting.)
-
-const filePath = "/Users/mitch/cyf/Module-JS1/week-1/interpret/file.txt";
-const lastSlashIndex = filePath.lastIndexOf("/");
-const base = filePath.slice(lastSlashIndex + 1);
-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 = ;
-
-// https://www.google.com/search?q=slice+mdn

From fa4e2909a3f3929bb5b59ceb50cb5c1b66f97b57 Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Sun, 11 Oct 2026 18:23:37 +0100
Subject: [PATCH 25/27] Add files via upload

---
 Sprint-2/1-key-exercises/3-paths.js | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 Sprint-2/1-key-exercises/3-paths.js

diff --git a/Sprint-2/1-key-exercises/3-paths.js b/Sprint-2/1-key-exercises/3-paths.js
new file mode 100644
index 000000000..ab90ebb28
--- /dev/null
+++ b/Sprint-2/1-key-exercises/3-paths.js
@@ -0,0 +1,23 @@
+// The diagram below shows the different names for parts of a file path on a Unix operating system
+
+// ┌─────────────────────┬────────────┐
+// │          dir        │    base    │
+// ├──────┬              ├──────┬─────┤
+// │ root │              │ name │ ext │
+// "  /    home/user/dir / file  .txt "
+// └──────┴──────────────┴──────┴─────┘
+
+// (All spaces in the "" line should be ignored. They are purely for formatting.)
+
+const filePath = "/Users/mitch/cyf/Module-JS1/week-1/interpret/file.txt";
+const lastSlashIndex = filePath.lastIndexOf("/");
+const base = filePath.slice(lastSlashIndex + 1);
+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 = ;
+
+// https://www.google.com/search?q=slice+mdn
\ No newline at end of file

From 91bfb827bc106ae89cfaeb70472c2f2cc857fcaa Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Sun, 11 Oct 2026 18:24:46 +0100
Subject: [PATCH 26/27] Delete Sprint-2/3-mandatory-interpret/3-to-pounds.js

---
 Sprint-2/3-mandatory-interpret/3-to-pounds.js | 27 -------------------
 1 file changed, 27 deletions(-)
 delete mode 100644 Sprint-2/3-mandatory-interpret/3-to-pounds.js

diff --git a/Sprint-2/3-mandatory-interpret/3-to-pounds.js b/Sprint-2/3-mandatory-interpret/3-to-pounds.js
deleted file mode 100644
index f47e26f2c..000000000
--- a/Sprint-2/3-mandatory-interpret/3-to-pounds.js
+++ /dev/null
@@ -1,27 +0,0 @@
-const penceString = "399p";
-
-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");
-
-console.log(`£${pounds}.${pence}`);
-
-// This program takes a string representing a price in pence
-// The program then builds up a string representing the price in pounds
-
-// You need to do a step-by-step breakdown of each line in this program
-// Try and describe the purpose / rationale behind each step
-
-// To begin, we can start with
-// 1. const penceString = "399p": initialises a string variable with the value "399p"

From 64e95e74bc061971a2c24d7a6005d4938d814cba Mon Sep 17 00:00:00 2001
From: anitahy73 <anita.hy73@gmail.com>
Date: Sun, 11 Oct 2026 18:25:14 +0100
Subject: [PATCH 27/27] Add files via upload

---
 Sprint-2/3-mandatory-interpret/3-to-pounds.js | 27 +++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 Sprint-2/3-mandatory-interpret/3-to-pounds.js

diff --git a/Sprint-2/3-mandatory-interpret/3-to-pounds.js b/Sprint-2/3-mandatory-interpret/3-to-pounds.js
new file mode 100644
index 000000000..60c9ace69
--- /dev/null
+++ b/Sprint-2/3-mandatory-interpret/3-to-pounds.js
@@ -0,0 +1,27 @@
+const penceString = "399p";
+
+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");
+
+console.log(`£${pounds}.${pence}`);
+
+// This program takes a string representing a price in pence
+// The program then builds up a string representing the price in pounds
+
+// You need to do a step-by-step breakdown of each line in this program
+// Try and describe the purpose / rationale behind each step
+
+// To begin, we can start with
+// 1. const penceString = "399p": initialises a string variable with the value "399p"