From 4c29df26e56f801cd5f73fdcf1ce5042ff571176 Mon Sep 17 00:00:00 2001
From: Aklilu Mihtsun <mihtsun.app@gmail.com>
Date: Sat, 19 Sep 2026 16:19:35 +0100
Subject: [PATCH 01/14] Fix HTML doctype casing and add CSS styles for form
 layout

---
 Form-Controls/index.html |  2 +-
 Form-Controls/style.css  | 79 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 80 insertions(+), 1 deletion(-)
 create mode 100644 Form-Controls/style.css

diff --git a/Form-Controls/index.html b/Form-Controls/index.html
index 74b591ffc..e2ac38bba 100644
--- a/Form-Controls/index.html
+++ b/Form-Controls/index.html
@@ -1,4 +1,4 @@
-<!DOCTYPE html>
+<!doctype html>
 <html lang="en">
   <head>
     <meta charset="utf-8" />
diff --git a/Form-Controls/style.css b/Form-Controls/style.css
new file mode 100644
index 000000000..a3ecf1c3d
--- /dev/null
+++ b/Form-Controls/style.css
@@ -0,0 +1,79 @@
+body {
+  font-family: Arial, sans-serif;
+  background-color: #f2f2f2;
+  margin: 0;
+}
+
+header {
+  background-color: #333;
+  color: white;
+  text-align: center;
+  padding: 20px;
+}
+
+header h1 {
+  margin: 0;
+}
+
+main {
+  max-width: 600px;
+  margin: 30px auto;
+  padding: 0 20px;
+}
+
+fieldset {
+  background-color: white;
+  border: 1px solid #ccc;
+  border-radius: 8px;
+  padding: 20px;
+  margin-bottom: 20px;
+}
+
+legend {
+  font-weight: bold;
+  padding: 0 20px;
+}
+
+fieldset p {
+  margin-bottom: 15px;
+}
+
+input[type="text"],
+input[type="email"] {
+  display: block;
+  width: 100%;
+  box-sizing: border-box;
+  padding: 10px;
+  margin-top: 6px;
+  border: 1px solid #bbb;
+  border-radius: 5px;
+}
+
+select {
+  display: block;
+  margin-top: 6px;
+  padding: 10px;
+  border: 1px solid #bbb;
+  border-radius: 5px;
+}
+
+input[type="submit"] {
+  background-color: #bbb;
+  color: black;
+  font-weight: bold;
+  padding: 10px 20px;
+  border-radius: 5px;
+}
+input[type="text"]:focus,
+input[type="email"]:focus,
+input[type="radio"]:focus,
+input[type="submit"]:focus,
+select:focus {
+  outline: 3px solid black;
+}
+
+footer {
+  font-weight: bold;
+  padding: 10px 20px;
+  margin-top: 6px;
+}

From 2a3a27d91ddcd6e0847775bc6dec302d585642dc Mon Sep 17 00:00:00 2001
From: Aklilu Mihtsun <mihtsun.app@gmail.com>
Date: Sat, 26 Sep 2026 00:12:27 +0100
Subject: [PATCH 02/14] Fix variable redeclaration error in capitalise function

---
 Sprint-3/1-key-errors/0.js | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/Sprint-3/1-key-errors/0.js b/Sprint-3/1-key-errors/0.js
index 653d6f5a0..2f79eb019 100644
--- a/Sprint-3/1-key-errors/0.js
+++ b/Sprint-3/1-key-errors/0.js
@@ -1,13 +1,22 @@
 // Predict and explain first...
-//  =============> write your prediction here
+//  I am predicting the code will generate error because the variable str is declared twice
 
 // call the function capitalise with a string input
 // interpret the error message and figure out why an error is occurring
 
-function capitalise(str) {
+/*function capitalise(str) {
   let str = `${str[0].toUpperCase()}${str.slice(1)}`;
   return str;
 }
+console.log(capitalise("hello World"));*/
+
+// After we run the code, it generated this error SyntaxError: Identifier str has already been declared
+// This happened because we tried to declare again using the keyword let the variable str
+// which was declared before in the parameter of the function
 
-// =============> write your explanation here
-// =============> write your new code here
+//Here is the fixed code
+function capitalise(str) {
+  str = `${str[0].toUpperCase()}${str.slice(1)}`;
+  return str;
+}
+console.log(capitalise("hello World"));

From 4eaa3d3c34fb396902b7afb3a4eaae5c623943a9 Mon Sep 17 00:00:00 2001
From: Aklilu Mihtsun <mihtsun.app@gmail.com>
Date: Sat, 26 Sep 2026 01:06:13 +0100
Subject: [PATCH 03/14] Fix variable redeclaration and update function call in
 percentage conversion

---
 Sprint-3/1-key-errors/1.js | 22 +++++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

diff --git a/Sprint-3/1-key-errors/1.js b/Sprint-3/1-key-errors/1.js
index f2d56151f..5a8917385 100644
--- a/Sprint-3/1-key-errors/1.js
+++ b/Sprint-3/1-key-errors/1.js
@@ -1,20 +1,32 @@
 // Predict and explain first...
 
 // Why will an error occur when this program runs?
-// =============> write your prediction here
+// I predict the code will generate 2 errors because one the variable decimalNumber is declared twice and two
+// the function is not called instead the variable decimalNumber is called and it can't be accessed because
+// it was declared locally as a parameter of the function
 
 // Try playing computer with the example to work out what is going on
 
-function convertToPercentage(decimalNumber) {
+/*function convertToPercentage(decimalNumber) {
   const decimalNumber = 0.5;
   const percentage = `${decimalNumber * 100}%`;
 
   return percentage;
 }
 
-console.log(decimalNumber);
+console.log(decimalNumber);*/
 
-// =============> write your explanation here
+// After we run the code, it generated an error SyntaxError: Identifier 'decimalNumber' has already been declared
+// because we tried to declare decimalNumber again. After fixing this error again we got another error ReferenceError: decimalNumber is not defined
+// because the decimalNumber is locally scoped, javascript can't access it when the function is called
+// additionally the function was not called  console.log(decimalNumber) this simply means print the value of decimalNumber
 
 // Finally, correct the code to fix the problem
-// =============> write your new code here
+// Here is the fixed code
+function convertToPercentage(decimalNumber) {
+  const percentage = `${decimalNumber * 100}%`;
+
+  return percentage;
+}
+
+console.log(convertToPercentage(0.5));

From 47e6f25c0a240865eef34951a247f3134a536ed1 Mon Sep 17 00:00:00 2001
From: Aklilu Mihtsun <mihtsun.app@gmail.com>
Date: Sat, 26 Sep 2026 01:15:09 +0100
Subject: [PATCH 04/14] Fix function parameter declaration and update error
 prediction comments

---
 Sprint-3/1-key-errors/2.js | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/Sprint-3/1-key-errors/2.js b/Sprint-3/1-key-errors/2.js
index aad57f7cf..d32330049 100644
--- a/Sprint-3/1-key-errors/2.js
+++ b/Sprint-3/1-key-errors/2.js
@@ -1,20 +1,21 @@
-
 // Predict and explain first BEFORE you run any code...
 
 // this function should square any number but instead we're going to get an error
 
-// =============> write your prediction of the error here
+// I predict the error will come from the argument because when we write a function we first declare parameters not values
 
-function square(3) {
+/*function square(3) {
     return num * num;
-}
+}*/
 
-// =============> write the error message here
+// SyntaxError: Unexpected number
 
-// =============> explain this error message here
+// this error tells us javascript expects valid variable identifiers when function is defined not values
 
 // Finally, correct the code to fix the problem
 
-// =============> write your new code here
-
-
+// Here is the fixed code
+function square(num) {
+  return num * num;
+}
+console.log(square(3));

From 1250064c3c984ea3d0148e6c8ecc8ae31469ad60 Mon Sep 17 00:00:00 2001
From: Aklilu Mihtsun <mihtsun.app@gmail.com>
Date: Mon, 28 Sep 2026 16:38:13 +0100
Subject: [PATCH 05/14] Explaning and fixing the bug by adding return keyword

---
 Sprint-3/2-mandatory-debug/0.js | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/Sprint-3/2-mandatory-debug/0.js b/Sprint-3/2-mandatory-debug/0.js
index b27511b41..47d9cc330 100644
--- a/Sprint-3/2-mandatory-debug/0.js
+++ b/Sprint-3/2-mandatory-debug/0.js
@@ -1,14 +1,22 @@
 // Predict and explain first...
 
-// =============> write your prediction here
+// I predict the code will run normally and print the result of a * b on the first console, but it will return undefined on the
+// second console.log
 
-function multiply(a, b) {
+/*function multiply(a, b) {
   console.log(a * b);
 }
 
-console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
+console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);*/
 
-// =============> write your explanation here
+// The reason for printing undefined is that we didn't define a return value so the js doesn't know what to return and it simply returns undefined
+// We can fix the code by replacing the console.log with a return keyword so the js knows what to return when the function is called
 
 // Finally, correct the code to fix the problem
-//  =============> write your new code here
+// Here is the fixed code
+
+function multiply(a, b) {
+  return a * b;
+}
+
+console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);

From 0e0827d89d64c722f3d5e7693101f42ee53199eb Mon Sep 17 00:00:00 2001
From: Aklilu Mihtsun <mihtsun.app@gmail.com>
Date: Mon, 28 Sep 2026 16:59:24 +0100
Subject: [PATCH 06/14] Explained and fixed the bug proper use of return
 statment

---
 Sprint-3/2-mandatory-debug/1.js | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/Sprint-3/2-mandatory-debug/1.js b/Sprint-3/2-mandatory-debug/1.js
index 37cedfbcf..b6f9837ff 100644
--- a/Sprint-3/2-mandatory-debug/1.js
+++ b/Sprint-3/2-mandatory-debug/1.js
@@ -1,13 +1,21 @@
 // Predict and explain first...
-//  =============> write your prediction here
+//  I predict that the code will run but it will print undefined because the return expression is not setup properly
 
-function sum(a, b) {
+/*function sum(a, b) {
   return;
   a + b;
 }
 
-console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
+console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);*/
+
+// When we run the code it printed out undefined because the return keyword is there but the expression that needs to be returned is not on the same line
+// therefore the return keyword can't reach the expression and the expression is ignored because the function has done execution right after it reaches the return keyword
 
-// =============> write your explanation here
 // Finally, correct the code to fix the problem
-//  =============> write your new code here
+// Here is the fixed code
+
+function sum(a, b) {
+  return a + b;
+}
+
+console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);

From 8ad0bd9e64b7e4790ea93237f7b2ea1d9173b58f Mon Sep 17 00:00:00 2001
From: Aklilu Mihtsun <mihtsun.app@gmail.com>
Date: Mon, 28 Sep 2026 17:25:54 +0100
Subject: [PATCH 07/14] Explaining and fixing the bug by adding parameter

---
 Sprint-3/2-mandatory-debug/2.js | 24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)

diff --git a/Sprint-3/2-mandatory-debug/2.js b/Sprint-3/2-mandatory-debug/2.js
index 57d3f5dc3..f12c51adc 100644
--- a/Sprint-3/2-mandatory-debug/2.js
+++ b/Sprint-3/2-mandatory-debug/2.js
@@ -1,9 +1,9 @@
 // Predict and explain first...
 
 // Predict the output of the following code:
-// =============> Write your prediction here
+// I predict the code will run but will give us unexpected output as the function does not have parameter but we provided an argument
 
-const num = 103;
+/*const num = 103;
 
 function getLastDigit() {
   return num.toString().slice(-1);
@@ -11,14 +11,26 @@ function getLastDigit() {
 
 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)}`);
+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
+// It is because we declared a function with no parameters so the function will ignore any arguments we provide
+// since the var num is declared and assigned with a value so every time the function is called it will use the var num
+
 // Finally, correct the code to fix the problem
-// =============> write your new code here
+// Here is the fixed code
+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 92ecd918cd60e3b05b99534a9b45574cbaac3ee2 Mon Sep 17 00:00:00 2001
From: Aklilu Mihtsun <mihtsun.app@gmail.com>
Date: Mon, 28 Sep 2026 18:06:41 +0100
Subject: [PATCH 08/14] created a function that calculates BMI and returns
 string with one decimal point

---
 Sprint-3/3-mandatory-implement/1-bmi.js | 6 +++++-
 1 file changed, 5 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..a29c8593d 100644
--- a/Sprint-3/3-mandatory-implement/1-bmi.js
+++ b/Sprint-3/3-mandatory-implement/1-bmi.js
@@ -15,5 +15,9 @@
 // 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 ** 2;
+  const stringBMI = BMI.toString();
+  return stringBMI.slice(0, stringBMI.indexOf(".") + 2);
 }
+
+console.log(calculateBMI(70, 1.73));

From 0fee2589328f9dd8316c2d5dc8e0657efa9511f1 Mon Sep 17 00:00:00 2001
From: Aklilu Mihtsun <mihtsun.app@gmail.com>
Date: Mon, 28 Sep 2026 18:38:27 +0100
Subject: [PATCH 09/14] creating a function that uppercases string and replace
 empty space

---
 Sprint-3/3-mandatory-implement/2-cases.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Sprint-3/3-mandatory-implement/2-cases.js b/Sprint-3/3-mandatory-implement/2-cases.js
index 5b0ef77ad..5975da6ac 100644
--- a/Sprint-3/3-mandatory-implement/2-cases.js
+++ b/Sprint-3/3-mandatory-implement/2-cases.js
@@ -14,3 +14,7 @@
 // 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 uppercaseAndUnderscore(word) {
+  return word.toUpperCase().replaceAll(" ", "_");
+}
+console.log(uppercaseAndUnderscore("welcome to cyf"));

From 6e72bf1f67db4f3cf3a55debe6e49ea4dd41becc Mon Sep 17 00:00:00 2001
From: Aklilu Mihtsun <mihtsun.app@gmail.com>
Date: Mon, 28 Sep 2026 22:46:29 +0100
Subject: [PATCH 10/14] implementing the function that changes different input
 in to pounds

---
 Sprint-3/3-mandatory-implement/3-to-pounds.js | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/Sprint-3/3-mandatory-implement/3-to-pounds.js b/Sprint-3/3-mandatory-implement/3-to-pounds.js
index 10754da73..1973cccd9 100644
--- a/Sprint-3/3-mandatory-implement/3-to-pounds.js
+++ b/Sprint-3/3-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) {
+  if (penceString == "") {
+    return "please put the amount";
+  }
+  const totalPence = parseInt(penceString, 10);
+  const pounds = totalPence / 100;
+  const formattedPound = pounds.toFixed(2);
+  return "£" + formattedPound;
+}
+
+console.log(toPounds("1991p"));
+console.log(toPounds("2020p"));
+console.log(toPounds("399p"));
+console.log(toPounds("69p"));
+console.log(toPounds("00p  "));
+console.log(toPounds(" 50p "));
+console.log(toPounds("232423"));
+console.log(toPounds(""));

From 481cdd21626ca5886ef040a83d710d3621ea69bd Mon Sep 17 00:00:00 2001
From: Aklilu Mihtsun <mihtsun.app@gmail.com>
Date: Mon, 28 Sep 2026 23:51:30 +0100
Subject: [PATCH 11/14] added explanation about the function call

---
 Sprint-3/4-mandatory-interpret/time-format.js | 15 ++++++++++-----
 1 file changed, 10 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..471be6c25 100644
--- a/Sprint-3/4-mandatory-interpret/time-format.js
+++ b/Sprint-3/4-mandatory-interpret/time-format.js
@@ -15,24 +15,29 @@ 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
+// The function pad will be called three times
 
 // 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
+//  num is assigned value of totalHours when pad is called first time because js evaluates expressions from left to right
 
 // c) What is the return value of pad when it is called for the first time?
-// =============> write your answer here
+// The return value 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
+// num will be assigned the value of remainingSeconds when pad is called for the last time because js evaluates any expression
+// from left to right and the pad with argument remainingSeconds is found at the right end
 
 // 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
+// The return value of pad when it is called for the last time is "01"
+// We calculated remainingSeconds in the function formatTimeDisplay and we got the value 1 then when pad is called with
+// an argument value of remainingSeconds we changed the value to string and 0 is added before 1 and it became 2 digits which is "01"

From 0d560fc02750704f8b7f0a9db474b8c000750e2b Mon Sep 17 00:00:00 2001
From: Aklilu Mihtsun <mihtsun.app@gmail.com>
Date: Wed, 30 Sep 2026 17:54:45 +0100
Subject: [PATCH 12/14] refactor formatAs12HourClock function to handle input
 validation and edge cases

---
 Sprint-3/5-stretch-extend/format-time.js | 97 +++++++++++++++++++++---
 1 file changed, 86 insertions(+), 11 deletions(-)

diff --git a/Sprint-3/5-stretch-extend/format-time.js b/Sprint-3/5-stretch-extend/format-time.js
index 32a32e66b..11072b3e6 100644
--- a/Sprint-3/5-stretch-extend/format-time.js
+++ b/Sprint-3/5-stretch-extend/format-time.js
@@ -3,23 +3,98 @@
 // Your task is to write tests for as many different groups of input data or edge cases as you can, and fix any bugs you find.
 
 function formatAs12HourClock(time) {
-  const hours = Number(time.slice(0, 2));
-  if (hours > 12) {
-    return `${hours - 12}:00 pm`;
+  const slicedHours = time.slice(0, 2);
+  const hours = Number(slicedHours);
+  const slicedMinutes = time.slice(-2);
+  const minutes = Number(slicedMinutes);
+  const pattern = /^\d{2}:\d{2}$/;
+  if (!pattern.test(time)) {
+    return `wrong format input`;
+  }
+  if (minutes < 60) {
+    if (hours >= 24) {
+      return `please check your input hour`;
+    } else if (hours > 12) {
+      return `${hours - 12}:${slicedMinutes} pm`;
+    } else if (hours === 0) {
+      return `12:${slicedMinutes} am`;
+    } else {
+      return `${slicedHours}:${slicedMinutes} am`;
+    }
+  } else {
+    return `please check your input minute`;
   }
-  return `${time} am`;
 }
 
-const currentOutput = formatAs12HourClock("08:00");
-const targetOutput = "08:00 am";
+const currentOutput1 = formatAs12HourClock("00:60");
+const targetOutput1 = "please check your input minute";
 console.assert(
-  currentOutput === targetOutput,
-  `current output: ${currentOutput}, target output: ${targetOutput}`
+  currentOutput1 === targetOutput1,
+  `current output: ${currentOutput1}, target output: ${targetOutput1}`,
+  "dude whats wrong",
 );
 
-const currentOutput2 = formatAs12HourClock("23:00");
-const targetOutput2 = "11:00 pm";
+const currentOutput2 = formatAs12HourClock("24:45");
+const targetOutput2 = "please check your input hour";
 console.assert(
   currentOutput2 === targetOutput2,
-  `current output: ${currentOutput2}, target output: ${targetOutput2}`
+  `current output: ${currentOutput2}, target output: ${targetOutput2}`,
+  "dude whats wrong",
+);
+
+const currentOutput3 = formatAs12HourClock("23:59");
+const targetOutput3 = "11:59 pm";
+console.assert(
+  currentOutput3 === targetOutput3,
+  `current output: ${currentOutput3}, target output: ${targetOutput3}`,
+  "dude whats wrong",
+);
+
+const currentOutput4 = formatAs12HourClock("07:30");
+const targetOutput4 = "07:30 am";
+console.assert(
+  currentOutput4 === targetOutput4,
+  `current output: ${currentOutput4}, target output: ${targetOutput4}`,
+  "dude whats wrong",
+);
+
+const currentOutput5 = formatAs12HourClock("22:45");
+const targetOutput5 = "10:45 pm";
+console.assert(
+  currentOutput5 === targetOutput5,
+  `current output: ${currentOutput5}, target output: ${targetOutput5}`,
+  "dude whats wrong",
 );
+
+const currentOutput6 = formatAs12HourClock("00:20");
+const targetOutput6 = "12:20 am";
+console.assert(
+  currentOutput6 === targetOutput6,
+  `current output: ${currentOutput6}, target output: ${targetOutput6}`,
+  "dude whats wrong",
+);
+
+const currentOutput7 = formatAs12HourClock("12:45");
+const targetOutput7 = "12:45 pm";
+console.assert(
+  currentOutput7 === targetOutput7,
+  `current output: ${currentOutput7}, target output: ${targetOutput7}`,
+  "dude whats wrong",
+);
+
+const currentOutput8 = formatAs12HourClock("00:0");
+const targetOutput8 = "wrong format input";
+console.assert(
+  currentOutput8 === targetOutput8,
+  `current output: ${currentOutput8}, target output: ${targetOutput8}`,
+  "dude whats wrong",
+);
+
+console.log(formatAs12HourClock("00:60"));
+console.log(formatAs12HourClock("24:45"));
+console.log(formatAs12HourClock("23:59"));
+console.log(formatAs12HourClock("07:30"));
+console.log(formatAs12HourClock("22:45"));
+console.log(formatAs12HourClock("00:20"));
+console.log(formatAs12HourClock("12:45"));
+console.log(formatAs12HourClock("00:0"));

From 0f24ef2fdf3b66b6d01b25437fc7320d88b85205 Mon Sep 17 00:00:00 2001
From: Aklilu Mihtsun <mihtsun.app@gmail.com>
Date: Wed, 30 Sep 2026 18:24:48 +0100
Subject: [PATCH 13/14] Complete Sprint-3 coursework

---
 Sprint-3/1-key-errors/0.js                    |  44 ++--
 Sprint-3/1-key-errors/1.js                    |  64 +++---
 Sprint-3/1-key-errors/2.js                    |  42 ++--
 Sprint-3/2-mandatory-debug/0.js               |  44 ++--
 Sprint-3/2-mandatory-debug/1.js               |  42 ++--
 Sprint-3/2-mandatory-debug/2.js               |  72 +++----
 Sprint-3/3-mandatory-implement/1-bmi.js       |  46 ++--
 Sprint-3/3-mandatory-implement/2-cases.js     |  40 ++--
 Sprint-3/3-mandatory-implement/3-to-pounds.js |  50 ++---
 Sprint-3/4-mandatory-interpret/time-format.js |  86 ++++----
 Sprint-3/5-stretch-extend/format-time.js      | 200 +++++++++---------
 11 files changed, 365 insertions(+), 365 deletions(-)

diff --git a/Sprint-3/1-key-errors/0.js b/Sprint-3/1-key-errors/0.js
index 2f79eb019..dd7dfa253 100644
--- a/Sprint-3/1-key-errors/0.js
+++ b/Sprint-3/1-key-errors/0.js
@@ -1,22 +1,22 @@
-// Predict and explain first...
-//  I am predicting the code will generate error because the variable str is declared twice
-
-// call the function capitalise with a string input
-// interpret the error message and figure out why an error is occurring
-
-/*function capitalise(str) {
-  let str = `${str[0].toUpperCase()}${str.slice(1)}`;
-  return str;
-}
-console.log(capitalise("hello World"));*/
-
-// After we run the code, it generated this error SyntaxError: Identifier str has already been declared
-// This happened because we tried to declare again using the keyword let the variable str
-// which was declared before in the parameter of the function
-
-//Here is the fixed code
-function capitalise(str) {
-  str = `${str[0].toUpperCase()}${str.slice(1)}`;
-  return str;
-}
-console.log(capitalise("hello World"));
+// Predict and explain first...
+//  I am predicting the code will generate error because the variable str is declared twice
+
+// call the function capitalise with a string input
+// interpret the error message and figure out why an error is occurring
+
+/*function capitalise(str) {
+  let str = `${str[0].toUpperCase()}${str.slice(1)}`;
+  return str;
+}
+console.log(capitalise("hello World"));*/
+
+// After we run the code, it generated this error SyntaxError: Identifier str has already been declared
+// This happened because we tried to declare again using the keyword let the variable str
+// which was declared before in the parameter of the function
+
+//Here is the fixed code
+function capitalise(str) {
+  str = `${str[0].toUpperCase()}${str.slice(1)}`;
+  return str;
+}
+console.log(capitalise("hello World"));
diff --git a/Sprint-3/1-key-errors/1.js b/Sprint-3/1-key-errors/1.js
index 5a8917385..fd820ff79 100644
--- a/Sprint-3/1-key-errors/1.js
+++ b/Sprint-3/1-key-errors/1.js
@@ -1,32 +1,32 @@
-// Predict and explain first...
-
-// Why will an error occur when this program runs?
-// I predict the code will generate 2 errors because one the variable decimalNumber is declared twice and two
-// the function is not called instead the variable decimalNumber is called and it can't be accessed because
-// it was declared locally as a parameter of the function
-
-// Try playing computer with the example to work out what is going on
-
-/*function convertToPercentage(decimalNumber) {
-  const decimalNumber = 0.5;
-  const percentage = `${decimalNumber * 100}%`;
-
-  return percentage;
-}
-
-console.log(decimalNumber);*/
-
-// After we run the code, it generated an error SyntaxError: Identifier 'decimalNumber' has already been declared
-// because we tried to declare decimalNumber again. After fixing this error again we got another error ReferenceError: decimalNumber is not defined
-// because the decimalNumber is locally scoped, javascript can't access it when the function is called
-// additionally the function was not called  console.log(decimalNumber) this simply means print the value of decimalNumber
-
-// Finally, correct the code to fix the problem
-// Here is the fixed code
-function convertToPercentage(decimalNumber) {
-  const percentage = `${decimalNumber * 100}%`;
-
-  return percentage;
-}
-
-console.log(convertToPercentage(0.5));
+// Predict and explain first...
+
+// Why will an error occur when this program runs?
+// I predict the code will generate 2 errors because one the variable decimalNumber is declared twice and two
+// the function is not called instead the variable decimalNumber is called and it can't be accessed because
+// it was declared locally as a parameter of the function
+
+// Try playing computer with the example to work out what is going on
+
+/*function convertToPercentage(decimalNumber) {
+  const decimalNumber = 0.5;
+  const percentage = `${decimalNumber * 100}%`;
+
+  return percentage;
+}
+
+console.log(decimalNumber);*/
+
+// After we run the code, it generated an error SyntaxError: Identifier 'decimalNumber' has already been declared
+// because we tried to declare decimalNumber again. After fixing this error again we got another error ReferenceError: decimalNumber is not defined
+// because the decimalNumber is locally scoped, javascript can't access it when the function is called
+// additionally the function was not called  console.log(decimalNumber) this simply means print the value of decimalNumber
+
+// Finally, correct the code to fix the problem
+// Here is the fixed code
+function convertToPercentage(decimalNumber) {
+  const percentage = `${decimalNumber * 100}%`;
+
+  return percentage;
+}
+
+console.log(convertToPercentage(0.5));
diff --git a/Sprint-3/1-key-errors/2.js b/Sprint-3/1-key-errors/2.js
index d32330049..dfdb0d395 100644
--- a/Sprint-3/1-key-errors/2.js
+++ b/Sprint-3/1-key-errors/2.js
@@ -1,21 +1,21 @@
-// Predict and explain first BEFORE you run any code...
-
-// this function should square any number but instead we're going to get an error
-
-// I predict the error will come from the argument because when we write a function we first declare parameters not values
-
-/*function square(3) {
-    return num * num;
-}*/
-
-// SyntaxError: Unexpected number
-
-// this error tells us javascript expects valid variable identifiers when function is defined not values
-
-// Finally, correct the code to fix the problem
-
-// Here is the fixed code
-function square(num) {
-  return num * num;
-}
-console.log(square(3));
+// Predict and explain first BEFORE you run any code...
+
+// this function should square any number but instead we're going to get an error
+
+// I predict the error will come from the argument because when we write a function we first declare parameters not values
+
+/*function square(3) {
+    return num * num;
+}*/
+
+// SyntaxError: Unexpected number
+
+// this error tells us javascript expects valid variable identifiers when function is defined not values
+
+// Finally, correct the code to fix the problem
+
+// Here is the fixed code
+function square(num) {
+  return num * num;
+}
+console.log(square(3));
diff --git a/Sprint-3/2-mandatory-debug/0.js b/Sprint-3/2-mandatory-debug/0.js
index 47d9cc330..50c37d9ea 100644
--- a/Sprint-3/2-mandatory-debug/0.js
+++ b/Sprint-3/2-mandatory-debug/0.js
@@ -1,22 +1,22 @@
-// Predict and explain first...
-
-// I predict the code will run normally and print the result of a * b on the first console, but it will return undefined on the
-// second console.log
-
-/*function multiply(a, b) {
-  console.log(a * b);
-}
-
-console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);*/
-
-// The reason for printing undefined is that we didn't define a return value so the js doesn't know what to return and it simply returns undefined
-// We can fix the code by replacing the console.log with a return keyword so the js knows what to return when the function is called
-
-// Finally, correct the code to fix the problem
-// Here is the fixed code
-
-function multiply(a, b) {
-  return a * b;
-}
-
-console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
+// Predict and explain first...
+
+// I predict the code will run normally and print the result of a * b on the first console, but it will return undefined on the
+// second console.log
+
+/*function multiply(a, b) {
+  console.log(a * b);
+}
+
+console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);*/
+
+// The reason for printing undefined is that we didn't define a return value so the js doesn't know what to return and it simply returns undefined
+// We can fix the code by replacing the console.log with a return keyword so the js knows what to return when the function is called
+
+// Finally, correct the code to fix the problem
+// Here is the fixed code
+
+function multiply(a, b) {
+  return a * b;
+}
+
+console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
diff --git a/Sprint-3/2-mandatory-debug/1.js b/Sprint-3/2-mandatory-debug/1.js
index b6f9837ff..d5c63b0e5 100644
--- a/Sprint-3/2-mandatory-debug/1.js
+++ b/Sprint-3/2-mandatory-debug/1.js
@@ -1,21 +1,21 @@
-// Predict and explain first...
-//  I predict that the code will run but it will print undefined because the return expression is not setup properly
-
-/*function sum(a, b) {
-  return;
-  a + b;
-}
-
-console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);*/
-
-// When we run the code it printed out undefined because the return keyword is there but the expression that needs to be returned is not on the same line
-// therefore the return keyword can't reach the expression and the expression is ignored because the function has done execution right after it reaches the return keyword
-
-// Finally, correct the code to fix the problem
-// Here is the fixed code
-
-function sum(a, b) {
-  return a + b;
-}
-
-console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
+// Predict and explain first...
+//  I predict that the code will run but it will print undefined because the return expression is not setup properly
+
+/*function sum(a, b) {
+  return;
+  a + b;
+}
+
+console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);*/
+
+// When we run the code it printed out undefined because the return keyword is there but the expression that needs to be returned is not on the same line
+// therefore the return keyword can't reach the expression and the expression is ignored because the function has done execution right after it reaches the return keyword
+
+// Finally, correct the code to fix the problem
+// Here is the fixed code
+
+function sum(a, b) {
+  return a + b;
+}
+
+console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
diff --git a/Sprint-3/2-mandatory-debug/2.js b/Sprint-3/2-mandatory-debug/2.js
index f12c51adc..d3eff7d84 100644
--- a/Sprint-3/2-mandatory-debug/2.js
+++ b/Sprint-3/2-mandatory-debug/2.js
@@ -1,36 +1,36 @@
-// Predict and explain first...
-
-// Predict the output of the following code:
-// I predict the code will run but will give us unexpected output as the function does not have parameter but we provided an argument
-
-/*const num = 103;
-
-function getLastDigit() {
-  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)}`);*/
-
-// Now run the code and compare the output to your prediction
-// 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
-// It is because we declared a function with no parameters so the function will ignore any arguments we provide
-// since the var num is declared and assigned with a value so every time the function is called it will use the var num
-
-// Finally, correct the code to fix the problem
-// Here is the fixed code
-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
+// Predict and explain first...
+
+// Predict the output of the following code:
+// I predict the code will run but will give us unexpected output as the function does not have parameter but we provided an argument
+
+/*const num = 103;
+
+function getLastDigit() {
+  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)}`);*/
+
+// Now run the code and compare the output to your prediction
+// 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
+// It is because we declared a function with no parameters so the function will ignore any arguments we provide
+// since the var num is declared and assigned with a value so every time the function is called it will use the var num
+
+// Finally, correct the code to fix the problem
+// Here is the fixed code
+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
diff --git a/Sprint-3/3-mandatory-implement/1-bmi.js b/Sprint-3/3-mandatory-implement/1-bmi.js
index a29c8593d..b95e97ba2 100644
--- a/Sprint-3/3-mandatory-implement/1-bmi.js
+++ b/Sprint-3/3-mandatory-implement/1-bmi.js
@@ -1,23 +1,23 @@
-// Below are the steps for how BMI is calculated
-
-// The BMI calculation divides an adult's weight in kilograms (kg) by their height in metres (m) squared.
-
-// For example, if you weigh 70kg (around 11 stone) and are 1.73m (around 5 feet 8 inches) tall, you work out your BMI by:
-
-// squaring your height: 1.73 x 1.73 = 2.99
-// dividing 70 by 2.99 = 23.41
-// Your result will be displayed to 1 decimal place, for example '23.4'.
-
-// You will need to implement a function that calculates the BMI of someone based off their weight and height
-
-// Given someone's weight in kg and height in metres
-// Then when we call this function with the weight and height
-// It should return a string of their Body Mass Index to 1 decimal place
-
-function calculateBMI(weight, height) {
-  const BMI = weight / height ** 2;
-  const stringBMI = BMI.toString();
-  return stringBMI.slice(0, stringBMI.indexOf(".") + 2);
-}
-
-console.log(calculateBMI(70, 1.73));
+// Below are the steps for how BMI is calculated
+
+// The BMI calculation divides an adult's weight in kilograms (kg) by their height in metres (m) squared.
+
+// For example, if you weigh 70kg (around 11 stone) and are 1.73m (around 5 feet 8 inches) tall, you work out your BMI by:
+
+// squaring your height: 1.73 x 1.73 = 2.99
+// dividing 70 by 2.99 = 23.41
+// Your result will be displayed to 1 decimal place, for example '23.4'.
+
+// You will need to implement a function that calculates the BMI of someone based off their weight and height
+
+// Given someone's weight in kg and height in metres
+// Then when we call this function with the weight and height
+// It should return a string of their Body Mass Index to 1 decimal place
+
+function calculateBMI(weight, height) {
+  const BMI = weight / height ** 2;
+  const stringBMI = BMI.toString();
+  return stringBMI.slice(0, stringBMI.indexOf(".") + 2);
+}
+
+console.log(calculateBMI(70, 1.73));
diff --git a/Sprint-3/3-mandatory-implement/2-cases.js b/Sprint-3/3-mandatory-implement/2-cases.js
index 5975da6ac..c820144df 100644
--- a/Sprint-3/3-mandatory-implement/2-cases.js
+++ b/Sprint-3/3-mandatory-implement/2-cases.js
@@ -1,20 +1,20 @@
-// A set of words can be grouped together in different cases.
-
-// For example, "hello there" in snake case would be written "hello_there"
-// UPPER_SNAKE_CASE means taking a string and writing it in all caps with underscores instead of spaces.
-
-// Implement a function that:
-
-// Given a string input like "hello there"
-// When we call this function with the input string
-// it returns the string in UPPER_SNAKE_CASE, so "HELLO_THERE"
-
-// Another example: "lord of the rings" should be "LORD_OF_THE_RINGS"
-
-// 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 uppercaseAndUnderscore(word) {
-  return word.toUpperCase().replaceAll(" ", "_");
-}
-console.log(uppercaseAndUnderscore("welcome to cyf"));
+// A set of words can be grouped together in different cases.
+
+// For example, "hello there" in snake case would be written "hello_there"
+// UPPER_SNAKE_CASE means taking a string and writing it in all caps with underscores instead of spaces.
+
+// Implement a function that:
+
+// Given a string input like "hello there"
+// When we call this function with the input string
+// it returns the string in UPPER_SNAKE_CASE, so "HELLO_THERE"
+
+// Another example: "lord of the rings" should be "LORD_OF_THE_RINGS"
+
+// 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 uppercaseAndUnderscore(word) {
+  return word.toUpperCase().replaceAll(" ", "_");
+}
+console.log(uppercaseAndUnderscore("welcome to cyf"));
diff --git a/Sprint-3/3-mandatory-implement/3-to-pounds.js b/Sprint-3/3-mandatory-implement/3-to-pounds.js
index 1973cccd9..000b99a2d 100644
--- a/Sprint-3/3-mandatory-implement/3-to-pounds.js
+++ b/Sprint-3/3-mandatory-implement/3-to-pounds.js
@@ -1,25 +1,25 @@
-// In Sprint-1, there is a program written in 3-mandatory-interpret/3-to-pounds.js
-
-// You will need to take this code and turn it into a reusable block of code.
-// 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) {
-  if (penceString == "") {
-    return "please put the amount";
-  }
-  const totalPence = parseInt(penceString, 10);
-  const pounds = totalPence / 100;
-  const formattedPound = pounds.toFixed(2);
-  return "£" + formattedPound;
-}
-
-console.log(toPounds("1991p"));
-console.log(toPounds("2020p"));
-console.log(toPounds("399p"));
-console.log(toPounds("69p"));
-console.log(toPounds("00p  "));
-console.log(toPounds(" 50p "));
-console.log(toPounds("232423"));
-console.log(toPounds(""));
+// In Sprint-1, there is a program written in 3-mandatory-interpret/3-to-pounds.js
+
+// You will need to take this code and turn it into a reusable block of code.
+// 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) {
+  if (penceString == "") {
+    return "please put the amount";
+  }
+  const totalPence = parseInt(penceString, 10);
+  const pounds = totalPence / 100;
+  const formattedPound = pounds.toFixed(2);
+  return "£" + formattedPound;
+}
+
+console.log(toPounds("1991p"));
+console.log(toPounds("2020p"));
+console.log(toPounds("399p"));
+console.log(toPounds("69p"));
+console.log(toPounds("00p  "));
+console.log(toPounds(" 50p "));
+console.log(toPounds("232423"));
+console.log(toPounds(""));
diff --git a/Sprint-3/4-mandatory-interpret/time-format.js b/Sprint-3/4-mandatory-interpret/time-format.js
index 471be6c25..6ee095562 100644
--- a/Sprint-3/4-mandatory-interpret/time-format.js
+++ b/Sprint-3/4-mandatory-interpret/time-format.js
@@ -1,43 +1,43 @@
-function pad(num) {
-  let numString = num.toString();
-  while (numString.length < 2) {
-    numString = "0" + numString;
-  }
-  return numString;
-}
-
-function formatTimeDisplay(seconds) {
-  const remainingSeconds = seconds % 60;
-  const totalMinutes = (seconds - remainingSeconds) / 60;
-  const remainingMinutes = totalMinutes % 60;
-  const totalHours = (totalMinutes - remainingMinutes) / 60;
-
-  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?
-// The function pad will be called three times
-
-// 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?
-//  num is assigned value of totalHours when pad is called first time because js evaluates expressions from left to right
-
-// c) What is the return value of pad when it is called for the first time?
-// The return value 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
-// num will be assigned the value of remainingSeconds when pad is called for the last time because js evaluates any expression
-// from left to right and the pad with argument remainingSeconds is found at the right end
-
-// e) What is the return value of pad when it is called for the last time in this program?  Explain your answer
-// The return value of pad when it is called for the last time is "01"
-// We calculated remainingSeconds in the function formatTimeDisplay and we got the value 1 then when pad is called with
-// an argument value of remainingSeconds we changed the value to string and 0 is added before 1 and it became 2 digits which is "01"
+function pad(num) {
+  let numString = num.toString();
+  while (numString.length < 2) {
+    numString = "0" + numString;
+  }
+  return numString;
+}
+
+function formatTimeDisplay(seconds) {
+  const remainingSeconds = seconds % 60;
+  const totalMinutes = (seconds - remainingSeconds) / 60;
+  const remainingMinutes = totalMinutes % 60;
+  const totalHours = (totalMinutes - remainingMinutes) / 60;
+
+  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?
+// The function pad will be called three times
+
+// 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?
+//  num is assigned value of totalHours when pad is called first time because js evaluates expressions from left to right
+
+// c) What is the return value of pad when it is called for the first time?
+// The return value 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
+// num will be assigned the value of remainingSeconds when pad is called for the last time because js evaluates any expression
+// from left to right and the pad with argument remainingSeconds is found at the right end
+
+// e) What is the return value of pad when it is called for the last time in this program?  Explain your answer
+// The return value of pad when it is called for the last time is "01"
+// We calculated remainingSeconds in the function formatTimeDisplay and we got the value 1 then when pad is called with
+// an argument value of remainingSeconds we changed the value to string and 0 is added before 1 and it became 2 digits which is "01"
diff --git a/Sprint-3/5-stretch-extend/format-time.js b/Sprint-3/5-stretch-extend/format-time.js
index 11072b3e6..4c7f4ae60 100644
--- a/Sprint-3/5-stretch-extend/format-time.js
+++ b/Sprint-3/5-stretch-extend/format-time.js
@@ -1,100 +1,100 @@
-// This is the latest solution to the problem from the prep.
-// Make sure to do the prep before you do the coursework
-// Your task is to write tests for as many different groups of input data or edge cases as you can, and fix any bugs you find.
-
-function formatAs12HourClock(time) {
-  const slicedHours = time.slice(0, 2);
-  const hours = Number(slicedHours);
-  const slicedMinutes = time.slice(-2);
-  const minutes = Number(slicedMinutes);
-  const pattern = /^\d{2}:\d{2}$/;
-  if (!pattern.test(time)) {
-    return `wrong format input`;
-  }
-  if (minutes < 60) {
-    if (hours >= 24) {
-      return `please check your input hour`;
-    } else if (hours > 12) {
-      return `${hours - 12}:${slicedMinutes} pm`;
-    } else if (hours === 0) {
-      return `12:${slicedMinutes} am`;
-    } else {
-      return `${slicedHours}:${slicedMinutes} am`;
-    }
-  } else {
-    return `please check your input minute`;
-  }
-}
-
-const currentOutput1 = formatAs12HourClock("00:60");
-const targetOutput1 = "please check your input minute";
-console.assert(
-  currentOutput1 === targetOutput1,
-  `current output: ${currentOutput1}, target output: ${targetOutput1}`,
-  "dude whats wrong",
-);
-
-const currentOutput2 = formatAs12HourClock("24:45");
-const targetOutput2 = "please check your input hour";
-console.assert(
-  currentOutput2 === targetOutput2,
-  `current output: ${currentOutput2}, target output: ${targetOutput2}`,
-  "dude whats wrong",
-);
-
-const currentOutput3 = formatAs12HourClock("23:59");
-const targetOutput3 = "11:59 pm";
-console.assert(
-  currentOutput3 === targetOutput3,
-  `current output: ${currentOutput3}, target output: ${targetOutput3}`,
-  "dude whats wrong",
-);
-
-const currentOutput4 = formatAs12HourClock("07:30");
-const targetOutput4 = "07:30 am";
-console.assert(
-  currentOutput4 === targetOutput4,
-  `current output: ${currentOutput4}, target output: ${targetOutput4}`,
-  "dude whats wrong",
-);
-
-const currentOutput5 = formatAs12HourClock("22:45");
-const targetOutput5 = "10:45 pm";
-console.assert(
-  currentOutput5 === targetOutput5,
-  `current output: ${currentOutput5}, target output: ${targetOutput5}`,
-  "dude whats wrong",
-);
-
-const currentOutput6 = formatAs12HourClock("00:20");
-const targetOutput6 = "12:20 am";
-console.assert(
-  currentOutput6 === targetOutput6,
-  `current output: ${currentOutput6}, target output: ${targetOutput6}`,
-  "dude whats wrong",
-);
-
-const currentOutput7 = formatAs12HourClock("12:45");
-const targetOutput7 = "12:45 pm";
-console.assert(
-  currentOutput7 === targetOutput7,
-  `current output: ${currentOutput7}, target output: ${targetOutput7}`,
-  "dude whats wrong",
-);
-
-const currentOutput8 = formatAs12HourClock("00:0");
-const targetOutput8 = "wrong format input";
-console.assert(
-  currentOutput8 === targetOutput8,
-  `current output: ${currentOutput8}, target output: ${targetOutput8}`,
-  "dude whats wrong",
-);
-
-console.log(formatAs12HourClock("00:60"));
-console.log(formatAs12HourClock("24:45"));
-console.log(formatAs12HourClock("23:59"));
-console.log(formatAs12HourClock("07:30"));
-console.log(formatAs12HourClock("22:45"));
-console.log(formatAs12HourClock("00:20"));
-console.log(formatAs12HourClock("12:45"));
-console.log(formatAs12HourClock("00:0"));
+// This is the latest solution to the problem from the prep.
+// Make sure to do the prep before you do the coursework
+// Your task is to write tests for as many different groups of input data or edge cases as you can, and fix any bugs you find.
+
+function formatAs12HourClock(time) {
+  const slicedHours = time.slice(0, 2);
+  const hours = Number(slicedHours);
+  const slicedMinutes = time.slice(-2);
+  const minutes = Number(slicedMinutes);
+  const pattern = /^\d{2}:\d{2}$/;
+  if (!pattern.test(time)) {
+    return `wrong format input`;
+  }
+  if (minutes < 60) {
+    if (hours >= 24) {
+      return `please check your input hour`;
+    } else if (hours > 12) {
+      return `${hours - 12}:${slicedMinutes} pm`;
+    } else if (hours === 0) {
+      return `12:${slicedMinutes} am`;
+    } else {
+      return `${slicedHours}:${slicedMinutes} am`;
+    }
+  } else {
+    return `please check your input minute`;
+  }
+}
+
+const currentOutput1 = formatAs12HourClock("00:60");
+const targetOutput1 = "please check your input minute";
+console.assert(
+  currentOutput1 === targetOutput1,
+  `current output: ${currentOutput1}, target output: ${targetOutput1}`,
+  "dude whats wrong",
+);
+
+const currentOutput2 = formatAs12HourClock("24:45");
+const targetOutput2 = "please check your input hour";
+console.assert(
+  currentOutput2 === targetOutput2,
+  `current output: ${currentOutput2}, target output: ${targetOutput2}`,
+  "dude whats wrong",
+);
+
+const currentOutput3 = formatAs12HourClock("23:59");
+const targetOutput3 = "11:59 pm";
+console.assert(
+  currentOutput3 === targetOutput3,
+  `current output: ${currentOutput3}, target output: ${targetOutput3}`,
+  "dude whats wrong",
+);
+
+const currentOutput4 = formatAs12HourClock("07:30");
+const targetOutput4 = "07:30 am";
+console.assert(
+  currentOutput4 === targetOutput4,
+  `current output: ${currentOutput4}, target output: ${targetOutput4}`,
+  "dude whats wrong",
+);
+
+const currentOutput5 = formatAs12HourClock("22:45");
+const targetOutput5 = "10:45 pm";
+console.assert(
+  currentOutput5 === targetOutput5,
+  `current output: ${currentOutput5}, target output: ${targetOutput5}`,
+  "dude whats wrong",
+);
+
+const currentOutput6 = formatAs12HourClock("00:20");
+const targetOutput6 = "12:20 am";
+console.assert(
+  currentOutput6 === targetOutput6,
+  `current output: ${currentOutput6}, target output: ${targetOutput6}`,
+  "dude whats wrong",
+);
+
+const currentOutput7 = formatAs12HourClock("12:45");
+const targetOutput7 = "12:45 pm";
+console.assert(
+  currentOutput7 === targetOutput7,
+  `current output: ${currentOutput7}, target output: ${targetOutput7}`,
+  "dude whats wrong",
+);
+
+const currentOutput8 = formatAs12HourClock("00:0");
+const targetOutput8 = "wrong format input";
+console.assert(
+  currentOutput8 === targetOutput8,
+  `current output: ${currentOutput8}, target output: ${targetOutput8}`,
+  "dude whats wrong",
+);
+
+console.log(formatAs12HourClock("00:60"));
+console.log(formatAs12HourClock("24:45"));
+console.log(formatAs12HourClock("23:59"));
+console.log(formatAs12HourClock("07:30"));
+console.log(formatAs12HourClock("22:45"));
+console.log(formatAs12HourClock("00:20"));
+console.log(formatAs12HourClock("12:45"));
+console.log(formatAs12HourClock("00:0"));

From a630a94f90ef4f44f53358826b04fe5d9c949b63 Mon Sep 17 00:00:00 2001
From: Aklilu Mihtsun <mihtsun.app@gmail.com>
Date: Thu, 1 Oct 2026 11:39:05 +0100
Subject: [PATCH 14/14] removing the html and css files from
 coursework/sprint-3 branch

---
 Form-Controls/index.html |  2 +-
 Form-Controls/style.css  | 79 ----------------------------------------
 2 files changed, 1 insertion(+), 80 deletions(-)
 delete mode 100644 Form-Controls/style.css

diff --git a/Form-Controls/index.html b/Form-Controls/index.html
index e2ac38bba..74b591ffc 100644
--- a/Form-Controls/index.html
+++ b/Form-Controls/index.html
@@ -1,4 +1,4 @@
-<!doctype html>
+<!DOCTYPE html>
 <html lang="en">
   <head>
     <meta charset="utf-8" />
diff --git a/Form-Controls/style.css b/Form-Controls/style.css
deleted file mode 100644
index a3ecf1c3d..000000000
--- a/Form-Controls/style.css
+++ /dev/null
@@ -1,79 +0,0 @@
-body {
-  font-family: Arial, sans-serif;
-  background-color: #f2f2f2;
-  margin: 0;
-}
-
-header {
-  background-color: #333;
-  color: white;
-  text-align: center;
-  padding: 20px;
-}
-
-header h1 {
-  margin: 0;
-}
-
-main {
-  max-width: 600px;
-  margin: 30px auto;
-  padding: 0 20px;
-}
-
-fieldset {
-  background-color: white;
-  border: 1px solid #ccc;
-  border-radius: 8px;
-  padding: 20px;
-  margin-bottom: 20px;
-}
-
-legend {
-  font-weight: bold;
-  padding: 0 20px;
-}
-
-fieldset p {
-  margin-bottom: 15px;
-}
-
-input[type="text"],
-input[type="email"] {
-  display: block;
-  width: 100%;
-  box-sizing: border-box;
-  padding: 10px;
-  margin-top: 6px;
-  border: 1px solid #bbb;
-  border-radius: 5px;
-}
-
-select {
-  display: block;
-  margin-top: 6px;
-  padding: 10px;
-  border: 1px solid #bbb;
-  border-radius: 5px;
-}
-
-input[type="submit"] {
-  background-color: #bbb;
-  color: black;
-  font-weight: bold;
-  padding: 10px 20px;
-  border-radius: 5px;
-}
-input[type="text"]:focus,
-input[type="email"]:focus,
-input[type="radio"]:focus,
-input[type="submit"]:focus,
-select:focus {
-  outline: 3px solid black;
-}
-
-footer {
-  font-weight: bold;
-  padding: 10px 20px;
-  margin-top: 6px;
-}