From 73129858197a88a456280464710c166f1f201d0d Mon Sep 17 00:00:00 2001
From: saff-coder <sophi.m.80@gmail.com>
Date: Fri, 10 Oct 2025 14:06:28 +0100
Subject: [PATCH 01/11] All the tasks are complete

---
 Sprint-1/1-key-exercises/1-count.js           |  1 +
 Sprint-1/1-key-exercises/2-initials.js        |  4 +-
 Sprint-1/1-key-exercises/3-paths.js           |  9 +++-
 Sprint-1/1-key-exercises/4-random.js          | 45 +++++++++++++++++++
 Sprint-1/2-mandatory-errors/0.js              |  8 +++-
 Sprint-1/2-mandatory-errors/1.js              |  4 ++
 Sprint-1/2-mandatory-errors/2.js              |  3 +-
 Sprint-1/2-mandatory-errors/3.js              | 11 ++++-
 Sprint-1/2-mandatory-errors/4.js              | 10 ++++-
 .../1-percentage-change.js                    | 19 +++++++-
 .../3-mandatory-interpret/2-time-format.js    |  8 +++-
 Sprint-1/3-mandatory-interpret/3-to-pounds.js |  7 ++-
 Sprint-1/4-stretch-explore/chrome.md          |  6 +++
 Sprint-1/4-stretch-explore/objects.md         |  5 +++
 14 files changed, 128 insertions(+), 12 deletions(-)

diff --git a/Sprint-1/1-key-exercises/1-count.js b/Sprint-1/1-key-exercises/1-count.js
index 117bcb2b6..7519f8829 100644
--- a/Sprint-1/1-key-exercises/1-count.js
+++ b/Sprint-1/1-key-exercises/1-count.js
@@ -4,3 +4,4 @@ count = count + 1;
 
 // Line 1 is a variable declaration, creating the count variable with an initial value of 0
 // Describe what line 3 is doing, in particular focus on what = is doing
+//In line 3 we are taking the current value of count (which is 0) and adding 1 to it, and store the new value back into  count" so now count is 1.the = is an assignment operator that Assigns values to variables so it takes the value on the right side (count + 1) and assigns it to the variable on the left side (count). 
\ No newline at end of file
diff --git a/Sprint-1/1-key-exercises/2-initials.js b/Sprint-1/1-key-exercises/2-initials.js
index 47561f617..23a96ab68 100644
--- a/Sprint-1/1-key-exercises/2-initials.js
+++ b/Sprint-1/1-key-exercises/2-initials.js
@@ -5,7 +5,9 @@ let lastName = "Johnson";
 // Declare a variable called initials that stores the first character of each string.
 // This should produce the string "CKJ", but you must not write the characters C, K, or J in the code of your solution.
 
-let initials = ``;
+let initials = `${firstName[0]}${middleName[0]}${lastName[0]}`;
 
 // https://www.google.com/search?q=get+first+character+of+string+mdn
 
+console.log(initials); //that should print "CKJ"
+//so the code is going to check the first character of each variable that means “the character at position 0
diff --git a/Sprint-1/1-key-exercises/3-paths.js b/Sprint-1/1-key-exercises/3-paths.js
index ab90ebb28..e0e2b5b0e 100644
--- a/Sprint-1/1-key-exercises/3-paths.js
+++ b/Sprint-1/1-key-exercises/3-paths.js
@@ -17,7 +17,12 @@ console.log(`The base part of ${filePath} is ${base}`);
 // Create a variable to store the dir part of the filePath variable
 // Create a variable to store the ext part of the variable
 
-const dir = ;
-const ext = ;
+const dir = filePath.slice(0, lastSlashIndex);// the slice is a method that cuts out part of a string and returns it as a new string. we use it here to get the dir part of the filePath
+const ext = base.slice(base.lastIndexOf("."));//the ext is any thing after the last dot 
+//const filePath = "/Users/mitch/cyf/Module-JS1/week-1/interpret/file.txt";
+//const dir = "/Users/mitch/cyf/Module-JS1/week-1/interpret";
+
+console.log(`The dir part of ${filePath} is ${dir}`);
+console.log(`The ext part of ${filePath} is ${ext}`);   
 
 // https://www.google.com/search?q=slice+mdn
\ No newline at end of file
diff --git a/Sprint-1/1-key-exercises/4-random.js b/Sprint-1/1-key-exercises/4-random.js
index 292f83aab..ee82575d1 100644
--- a/Sprint-1/1-key-exercises/4-random.js
+++ b/Sprint-1/1-key-exercises/4-random.js
@@ -2,8 +2,53 @@ const minimum = 1;
 const maximum = 100;
 
 const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
+console.log(num);
 
 // In this exercise, you will need to work out what num represents?
 // Try breaking down the expression and using documentation to explain what it means
 // It will help to think about the order in which expressions are evaluated
 // Try logging the value of num and running the program several times to build an idea of what the program is doing
+
+//num is a random number between minimum and maximum (inclusive)
+/*Math.random()
+
+This gives you a random decimal number between 0 (inclusive) and 1 (exclusive) — meaning it can be 0, but never exactly 1.
+
+Example outputs:
+0.23 
+
+/*(maximum - minimum + 1)
+
+This calculates how many whole numbers are in the range, including both ends.
+
+Example:
+100 - 1 + 1 = 100
+
+So, there are 100 possible integers from 1 to 100.
+
+/*Math.random() * (maximum - minimum + 1)
+
+This scales the random decimal to the desired range size.
+
+Example if Math.random() gave 0.57:
+0.57 * 100 = 57
+/*Math.floor(...)
+The Math.floor() method in JavaScript is used to round a number down to the nearest integer, regardless of whether the number is positive or negative or has a decimal part.
+Example:
+Math.floor(57.8) → 57
+
+/*+ minimum
+
+Finally, we shift the range up so it starts at 1 instead of 0.
+0–99 becomes 1–100*/
+
+//The order for evaluation is:
+/*maximum - minimum + 1
+
+Math.random() * (that result)
+
+Math.floor(...)
+
++ minimum*/
+
+//I run the code several times and got different numbers one was 60 the other one was 88
diff --git a/Sprint-1/2-mandatory-errors/0.js b/Sprint-1/2-mandatory-errors/0.js
index cf6c5039f..bb4556c21 100644
--- a/Sprint-1/2-mandatory-errors/0.js
+++ b/Sprint-1/2-mandatory-errors/0.js
@@ -1,2 +1,6 @@
-This is just an instruction for the first activity - but it is just for human consumption
-We don't want the computer to run these 2 lines - how can we solve this problem?
\ No newline at end of file
+//This is just an instruction for the first activity - but it is just for human consumption
+//We don't want the computer to run these 2 lines - how can we solve this problem?
+
+
+//if we have any instructions or explanations in our code without the computer executing them,we can use comments
+//comments In javascript are created by using (//) for single line comments
\ No newline at end of file
diff --git a/Sprint-1/2-mandatory-errors/1.js b/Sprint-1/2-mandatory-errors/1.js
index 7a43cbea7..8d492ab86 100644
--- a/Sprint-1/2-mandatory-errors/1.js
+++ b/Sprint-1/2-mandatory-errors/1.js
@@ -2,3 +2,7 @@
 
 const age = 33;
 age = age + 1;
+// This will give an error because we only use const for Fixed values so we can change const to let
+let age = 33;
+age = age + 1;
+console.log(age); // that should print 34
\ No newline at end of file
diff --git a/Sprint-1/2-mandatory-errors/2.js b/Sprint-1/2-mandatory-errors/2.js
index e09b89831..023100053 100644
--- a/Sprint-1/2-mandatory-errors/2.js
+++ b/Sprint-1/2-mandatory-errors/2.js
@@ -1,5 +1,6 @@
 // Currently trying to print the string "I was born in Bolton" but it isn't working...
 // what's the error ?
 
-console.log(`I was born in ${cityOfBirth}`);
 const cityOfBirth = "Bolton";
+console.log(`I was born in ${cityOfBirth}`);
+ //we have to declare the variable cityOfBirth with const or let before using it in the console.log statement
diff --git a/Sprint-1/2-mandatory-errors/3.js b/Sprint-1/2-mandatory-errors/3.js
index ec101884d..ec4223fd1 100644
--- a/Sprint-1/2-mandatory-errors/3.js
+++ b/Sprint-1/2-mandatory-errors/3.js
@@ -1,9 +1,18 @@
 const cardNumber = 4533787178994213;
 const last4Digits = cardNumber.slice(-4);
-
+console.log(last4Digits);
 // The last4Digits variable should store the last 4 digits of cardNumber
 // However, the code isn't working
 // Before running the code, make and explain a prediction about why the code won't work
+//the slice method is used for strings not numbers.
 // Then run the code and see what error it gives.
+//Uncaught TypeError: cardNumber.slice is not a function
 // Consider: Why does it give this error? Is this what I predicted? If not, what's different?
+//javascript can not slice a number 
 // Then try updating the expression last4Digits is assigned to, in order to get the correct value
+//I have added the console.log to see the output.
+//there is another way to get the last 4 digits by using slice method is to convert the number to a string first by using toString() method
+const last4Digits = cardNumber.toString().slice(-4); //it wil print "4213"
+//If you want it to be a number, you can convert it back:
+const last4Digits = Number(cardNumber.toString().slice(-4));
+Now last4Digits will be 4213 as a number.
\ No newline at end of file
diff --git a/Sprint-1/2-mandatory-errors/4.js b/Sprint-1/2-mandatory-errors/4.js
index 21dad8c5d..07b8dea17 100644
--- a/Sprint-1/2-mandatory-errors/4.js
+++ b/Sprint-1/2-mandatory-errors/4.js
@@ -1,2 +1,10 @@
 const 12HourClockTime = "20:53";
-const 24hourClockTime = "08:53";
\ No newline at end of file
+const 24hourClockTime = "08:53";
+
+//because variables names cannot start with a number
+//I have changed the variable names to start with a letter
+const twelveHourClockTime = "08:53 PM";
+const twentyFourHourClockTime = "20:53";
+console.log(twelveHourClockTime);
+console.log(twentyFourHourClockTime); 
+// that should print "08:53 PM" and "20:53"
\ No newline at end of file
diff --git a/Sprint-1/3-mandatory-interpret/1-percentage-change.js b/Sprint-1/3-mandatory-interpret/1-percentage-change.js
index e24ecb8e1..3ec5c3051 100644
--- a/Sprint-1/3-mandatory-interpret/1-percentage-change.js
+++ b/Sprint-1/3-mandatory-interpret/1-percentage-change.js
@@ -2,7 +2,7 @@ let carPrice = "10,000";
 let priceAfterOneYear = "8,543";
 
 carPrice = Number(carPrice.replaceAll(",", ""));
-priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," ""));
+priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," ,""));
 
 const priceDifference = carPrice - priceAfterOneYear;
 const percentageChange = (priceDifference / carPrice) * 100;
@@ -12,11 +12,26 @@ 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
-
+//after running the code I found 5 function calls
+//line 1: replaceAll
+//line 2: replaceAll
+//line 4: Number
+//line 5: Number
+//line 8: console.log
 // 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?
+// after running the code i found an error in line 5 missing a comma in the replaceAll method to fix it I have added the comma
 
 // 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 = "10,000";
+let priceAfterOneYear = "8,543";
+const priceDifference = carPrice - priceAfterOneYear;
+const percentageChange = (priceDifference / carPrice) * 100;
 
 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
+// Fist the car price is a string so we can't do any calculation on it yet 
+//so first we remove all the comma by using replaceAll method then we convert it to a number by using Number method
\ No newline at end of file
diff --git a/Sprint-1/3-mandatory-interpret/2-time-format.js b/Sprint-1/3-mandatory-interpret/2-time-format.js
index 47d239558..d1e665924 100644
--- a/Sprint-1/3-mandatory-interpret/2-time-format.js
+++ b/Sprint-1/3-mandatory-interpret/2-time-format.js
@@ -12,14 +12,20 @@ console.log(result);
 // For the piece of code above, read the code and then answer the following questions
 
 // a) How many variable declarations are there in this program?
+// there is 6 variable declarations 
 
 // b) How many function calls are there?
+// there is only 1 function call which is the last onw in line 10 console.log(result);
 
 // c) Using documentation, explain what the expression movieLength % 60 represents
 // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators
+//modulus operator % gives the remainder after dividing one number by another.which is in this case8784 % 60 = 24 second 
+
 
 // d) Interpret line 4, what does the expression assigned to totalMinutes mean?
+//we are converting the seconds into minutes by dividing by 60 
 
 // e) What do you think the variable result represents? Can you think of a better name for this variable?
-
+//Duration of the movie in hours, minutes, and seconds.
 // f) Try experimenting with different values of movieLength. Will this code work for all values of movieLength? Explain your answer
+//yes it will work for all values of movieLength  because the code will always convert seconds into hours, minutes, and seconds format.
\ No newline at end of file
diff --git a/Sprint-1/3-mandatory-interpret/3-to-pounds.js b/Sprint-1/3-mandatory-interpret/3-to-pounds.js
index 60c9ace69..4cb4ce2c7 100644
--- a/Sprint-1/3-mandatory-interpret/3-to-pounds.js
+++ b/Sprint-1/3-mandatory-interpret/3-to-pounds.js
@@ -24,4 +24,9 @@ console.log(`£${pounds}.${pence}`);
 // 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"
+// 1. const penceString = "399p":  a string variable with the value "399p"
+//2.in line 3 because the value is a string we can't do any calculation on it yet we need to convert it to a number so the first step is to get rid of the letter P at the end so no matter how long the number is we get rid of the last character.
+//3. in line 8 we make sure the number has 3 digits so if needed we add zeros at the start at the number
+//4. const pounds = paddedPenceNumberString.substring(0, paddedPenceNumberString.length - 2);: by taking away the last 2 digit we will get the pounds in this example the amount is 399 so by taking away the 99 we will get 3 pounds 
+//6. const pence = paddedPenceNumberString.substring(paddedPenceNumberString.length - 2).padEnd(2, "0");: the same thing again now extracts the pence part by taking the last two digits if it is one digit we add 0 at the end to make it two digits
+// in line 18 to print the result in the right format £ sign then pounds then a dot and then pence
diff --git a/Sprint-1/4-stretch-explore/chrome.md b/Sprint-1/4-stretch-explore/chrome.md
index e7dd5feaf..cbc84b3be 100644
--- a/Sprint-1/4-stretch-explore/chrome.md
+++ b/Sprint-1/4-stretch-explore/chrome.md
@@ -11,8 +11,14 @@ In the Chrome console,
 invoke the function `alert` with an input string of `"Hello world!"`;
 
 What effect does calling the `alert` function have?
+the browser shows a popup message box with your text — "Hello world!"
 
 Now try invoking the function `prompt` with a string input of `"What is your name?"` - store the return value of your call to `prompt` in an variable called `myName`.
 
+let myName = prompt("What is your name?");
+The browser shows a popup with a text input box and OK / Cancel buttons.
+
 What effect does calling the `prompt` function have?
+It display a dialog box that prompts the user for input
 What is the return value of `prompt`?
+The text the user entered (string) if clicked OK, or null if Cancel
diff --git a/Sprint-1/4-stretch-explore/objects.md b/Sprint-1/4-stretch-explore/objects.md
index 0216dee56..e2510a537 100644
--- a/Sprint-1/4-stretch-explore/objects.md
+++ b/Sprint-1/4-stretch-explore/objects.md
@@ -5,12 +5,17 @@ In this activity, we'll explore some additional concepts that you'll encounter i
 Open the Chrome devtools Console, type in `console.log` and then hit enter
 
 What output do you get?
+nothing 
 
 Now enter just `console` in the Console, what output do you get back?
+error message 
 
 Try also entering `typeof console`
 
 Answer the following questions:
 
 What does `console` store?
+console store Functions
 What does the syntax `console.log` or `console.assert` mean? In particular, what does the `.` mean?
+console.log  will print the message to the console
+console.assert will print a message if the condition is false

From d8fd1873339a7b47409d112e91c8c4c49b351dac Mon Sep 17 00:00:00 2001
From: saff-coder <sophi.m.80@gmail.com>
Date: Mon, 3 Nov 2025 14:16:37 +0000
Subject: [PATCH 02/11] completed the function now it should count how many
 char in a string

---
 Sprint-3/2-practice-tdd/count.js | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/Sprint-3/2-practice-tdd/count.js b/Sprint-3/2-practice-tdd/count.js
index 95b6ebb7d..0e960e890 100644
--- a/Sprint-3/2-practice-tdd/count.js
+++ b/Sprint-3/2-practice-tdd/count.js
@@ -1,5 +1,11 @@
 function countChar(stringOfCharacters, findCharacter) {
-  return 5
+   let count = 0;
+  for (let i = 0; i < stringOfCharacters.length; i++) {
+    if (stringOfCharacters[i] === findCharacter) {
+      count++;
+    }
+  }
+  return count; // this replaces 'return 5'
 }
 
 module.exports = countChar;

From 5c3f09f68cbe7065e332f7ae60370f6d068133cf Mon Sep 17 00:00:00 2001
From: saff-coder <sophi.m.80@gmail.com>
Date: Mon, 3 Nov 2025 22:17:41 +0000
Subject: [PATCH 03/11] Updated the CountChar function

---
 Sprint-3/2-practice-tdd/count.js | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/Sprint-3/2-practice-tdd/count.js b/Sprint-3/2-practice-tdd/count.js
index 0e960e890..c61bfdce7 100644
--- a/Sprint-3/2-practice-tdd/count.js
+++ b/Sprint-3/2-practice-tdd/count.js
@@ -1,11 +1,12 @@
-function countChar(stringOfCharacters, findCharacter) {
-   let count = 0;
-  for (let i = 0; i < stringOfCharacters.length; i++) {
-    if (stringOfCharacters[i] === findCharacter) {
-      count++;
+function countChar(str, char) {
+  let count = 0;
+
+  for (let i = 0; i < str.length; i++) {//loop through each character in the string
+    if (str[i] === char) {//check if the character matches the target character
+      count = count + 1;
     }
   }
-  return count; // this replaces 'return 5'
-}
 
-module.exports = countChar;
+  return count;//return the final count
+}
+module.exports = countChar;
\ No newline at end of file

From 26147072c308fdd972526c9523c91414568e43b7 Mon Sep 17 00:00:00 2001
From: saff-coder <sophi.m.80@gmail.com>
Date: Mon, 3 Nov 2025 22:21:14 +0000
Subject: [PATCH 04/11] implement countChar test done with Different Scenario

---
 Sprint-3/2-practice-tdd/count.test.js | 24 +++++++++++++++++++++---
 1 file changed, 21 insertions(+), 3 deletions(-)

diff --git a/Sprint-3/2-practice-tdd/count.test.js b/Sprint-3/2-practice-tdd/count.test.js
index 42baf4b4b..8a2f9e060 100644
--- a/Sprint-3/2-practice-tdd/count.test.js
+++ b/Sprint-3/2-practice-tdd/count.test.js
@@ -1,19 +1,29 @@
 // implement a function countChar that counts the number of times a character occurs in a string
 const countChar = require("./count");
+
+
 // Given a string str and a single character char to search for,
 // When the countChar function is called with these inputs,
-// Then it should:
+// Scenario: Single Occurrence
 
+test("counts a single occurrence of a character", () => {
+    expect(countChar("hello", "h")).toEqual(1);
+    expect(countChar("world", "d")).toEqual(1);
+  });
 // Scenario: Multiple Occurrences
 // Given the input string str,
 // And a character char that may occur multiple times with overlaps within str (e.g., 'a' in 'aaaaa'),
 // When the function is called with these inputs,
 // Then it should correctly count overlapping occurrences of char (e.g., 'a' appears five times in 'aaaaa').
+test("counts multiple occurrences of a character", () => {
+    expect(countChar("banana", "a")).toEqual(3);
+    expect(countChar("mississippi", "s")).toEqual(4);
+  });
 
 test("should count multiple occurrences of a character", () => {
   const str = "aaaaa";
-  const char = "a";
-  const count = countChar(str, char);
+  const Char = "a";
+  const count = countChar(str,Char);
   expect(count).toEqual(5);
 });
 
@@ -22,3 +32,11 @@ test("should count multiple occurrences of a character", () => {
 // And a character char that does not exist within the case-sensitive str,
 // When the function is called with these inputs,
 // Then it should return 0, indicating that no occurrences of the char were found in the case-sensitive str.
+// Scenario: No Occurrences
+test("should return 0 if the character is not in the string", () => {
+  const str = "hello";
+  const char = "x"; // character not present in str
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});
+

From c8c9bc13063259d4b071ecec4be7e32350646c8c Mon Sep 17 00:00:00 2001
From: saff-coder <sophi.m.80@gmail.com>
Date: Mon, 3 Nov 2025 22:21:44 +0000
Subject: [PATCH 05/11] function Updated

---
 Sprint-3/2-practice-tdd/repeat.js | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/Sprint-3/2-practice-tdd/repeat.js b/Sprint-3/2-practice-tdd/repeat.js
index 00e60d7f3..c4505cc66 100644
--- a/Sprint-3/2-practice-tdd/repeat.js
+++ b/Sprint-3/2-practice-tdd/repeat.js
@@ -1,5 +1,8 @@
-function repeat() {
-  return "hellohellohello";
+function repeat(word, times) {
+  if (times < 0) {
+    throw new Error("Count must be a non-negative number");
+  }
+  return word.repeat(times);
 }
 
 module.exports = repeat;

From 620ee390839c8689fd689052eb00c5def553357b Mon Sep 17 00:00:00 2001
From: saff-coder <sophi.m.80@gmail.com>
Date: Mon, 3 Nov 2025 22:23:13 +0000
Subject: [PATCH 06/11] test is done in different cases

---
 Sprint-3/2-practice-tdd/repeat.test.js | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/Sprint-3/2-practice-tdd/repeat.test.js b/Sprint-3/2-practice-tdd/repeat.test.js
index 34097b09c..7c1488b13 100644
--- a/Sprint-3/2-practice-tdd/repeat.test.js
+++ b/Sprint-3/2-practice-tdd/repeat.test.js
@@ -20,13 +20,23 @@ test("should repeat the string count times", () => {
 // Given a target string str and a count equal to 1,
 // When the repeat function is called with these inputs,
 // Then it should return the original str without repetition, ensuring that a count of 1 results in no repetition.
-
+test("should repeat the string count times", () => {
+const str = "hello";
+  const count = 1;
+  const repeatedStr = repeat(str, count);
+  expect(repeatedStr).toEqual("hello");   
+});
 // case: Handle Count of 0:
 // Given a target string str and a count equal to 0,
 // When the repeat function is called with these inputs,
 // Then it should return an empty string, ensuring that a count of 0 results in an empty output.
-
+test("should return empty string when times is 0", () => {
+  expect(repeat("hello", 0)).toEqual("");
+});
 // case: Negative Count:
 // Given a target string str and a negative integer count,
 // When the repeat function is called with these inputs,
 // Then it should throw an error or return an appropriate error message, as negative counts are not valid.
+test("should throw an error when count is negative", () => {
+  expect(() => repeat("hello", -3)).toThrow("Count must be a non-negative number");
+});

From 745b6e9153fad1dff2c6d666eb92d972b26f7bf4 Mon Sep 17 00:00:00 2001
From: saff-coder <sophi.m.80@gmail.com>
Date: Mon, 3 Nov 2025 22:23:50 +0000
Subject: [PATCH 07/11] function updated

---
 Sprint-3/2-practice-tdd/get-ordinal-number.js | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/Sprint-3/2-practice-tdd/get-ordinal-number.js b/Sprint-3/2-practice-tdd/get-ordinal-number.js
index f95d71db1..db4bc3ff5 100644
--- a/Sprint-3/2-practice-tdd/get-ordinal-number.js
+++ b/Sprint-3/2-practice-tdd/get-ordinal-number.js
@@ -1,5 +1,21 @@
 function getOrdinalNumber(num) {
-  return "1st";
+  const lastTwoDigits = num % 100; // check the last 2 digits for 11,12,13
+  const lastDigit = num % 10;
+
+  if (lastTwoDigits >= 11 && lastTwoDigits <= 13) {
+    return num + "th";
+  }
+
+  switch (lastDigit) {
+    case 1:
+      return num + "st";
+    case 2:
+      return num + "nd";
+    case 3:
+      return num + "rd";
+    default:
+      return num + "th";
+  }
 }
 
 module.exports = getOrdinalNumber;

From d6f14a8779d0888f468e67c9bc35d30cf82a3593 Mon Sep 17 00:00:00 2001
From: saff-coder <sophi.m.80@gmail.com>
Date: Mon, 3 Nov 2025 22:24:20 +0000
Subject: [PATCH 08/11] test is done with different Numbers

---
 Sprint-3/2-practice-tdd/get-ordinal-number.test.js | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Sprint-3/2-practice-tdd/get-ordinal-number.test.js b/Sprint-3/2-practice-tdd/get-ordinal-number.test.js
index dfe4b6091..bd1d35068 100644
--- a/Sprint-3/2-practice-tdd/get-ordinal-number.test.js
+++ b/Sprint-3/2-practice-tdd/get-ordinal-number.test.js
@@ -11,3 +11,13 @@ const getOrdinalNumber = require("./get-ordinal-number");
 test("should return '1st' for 1", () => {
   expect(getOrdinalNumber(1)).toEqual("1st");
 });
+test("should return 'th' for 11, 12, 13", () => {
+  expect(getOrdinalNumber(11)).toBe("11th");
+  expect(getOrdinalNumber(12)).toBe("12th");
+  expect(getOrdinalNumber(13)).toBe("13th");
+});
+test("should return correct ordinal for numbers > 20", () => {
+  expect(getOrdinalNumber(21)).toBe("21st");
+  expect(getOrdinalNumber(22)).toBe("22nd");
+  expect(getOrdinalNumber(23)).toBe("23rd");    
+});
\ No newline at end of file

From 45f409b00a55fe75c2fa6a390f116f8274af9977 Mon Sep 17 00:00:00 2001
From: saff-coder <sophi.m.80@gmail.com>
Date: Mon, 3 Nov 2025 22:56:51 +0000
Subject: [PATCH 09/11] #reverted sprint 1commit

---
 Sprint-1/1-key-exercises/1-count.js           |  1 -
 Sprint-1/1-key-exercises/2-initials.js        |  4 +-
 Sprint-1/1-key-exercises/3-paths.js           |  9 +---
 Sprint-1/1-key-exercises/4-random.js          | 45 -------------------
 Sprint-1/2-mandatory-errors/0.js              |  8 +---
 Sprint-1/2-mandatory-errors/1.js              |  4 --
 Sprint-1/2-mandatory-errors/2.js              |  3 +-
 Sprint-1/2-mandatory-errors/3.js              | 11 +----
 Sprint-1/2-mandatory-errors/4.js              | 10 +----
 .../1-percentage-change.js                    | 19 +-------
 .../3-mandatory-interpret/2-time-format.js    |  8 +---
 Sprint-1/3-mandatory-interpret/3-to-pounds.js |  7 +--
 Sprint-1/4-stretch-explore/chrome.md          |  6 ---
 Sprint-1/4-stretch-explore/objects.md         |  5 ---
 14 files changed, 12 insertions(+), 128 deletions(-)

diff --git a/Sprint-1/1-key-exercises/1-count.js b/Sprint-1/1-key-exercises/1-count.js
index 7519f8829..117bcb2b6 100644
--- a/Sprint-1/1-key-exercises/1-count.js
+++ b/Sprint-1/1-key-exercises/1-count.js
@@ -4,4 +4,3 @@ count = count + 1;
 
 // Line 1 is a variable declaration, creating the count variable with an initial value of 0
 // Describe what line 3 is doing, in particular focus on what = is doing
-//In line 3 we are taking the current value of count (which is 0) and adding 1 to it, and store the new value back into  count" so now count is 1.the = is an assignment operator that Assigns values to variables so it takes the value on the right side (count + 1) and assigns it to the variable on the left side (count). 
\ No newline at end of file
diff --git a/Sprint-1/1-key-exercises/2-initials.js b/Sprint-1/1-key-exercises/2-initials.js
index 23a96ab68..47561f617 100644
--- a/Sprint-1/1-key-exercises/2-initials.js
+++ b/Sprint-1/1-key-exercises/2-initials.js
@@ -5,9 +5,7 @@ let lastName = "Johnson";
 // Declare a variable called initials that stores the first character of each string.
 // This should produce the string "CKJ", but you must not write the characters C, K, or J in the code of your solution.
 
-let initials = `${firstName[0]}${middleName[0]}${lastName[0]}`;
+let initials = ``;
 
 // https://www.google.com/search?q=get+first+character+of+string+mdn
 
-console.log(initials); //that should print "CKJ"
-//so the code is going to check the first character of each variable that means “the character at position 0
diff --git a/Sprint-1/1-key-exercises/3-paths.js b/Sprint-1/1-key-exercises/3-paths.js
index e0e2b5b0e..ab90ebb28 100644
--- a/Sprint-1/1-key-exercises/3-paths.js
+++ b/Sprint-1/1-key-exercises/3-paths.js
@@ -17,12 +17,7 @@ console.log(`The base part of ${filePath} is ${base}`);
 // Create a variable to store the dir part of the filePath variable
 // Create a variable to store the ext part of the variable
 
-const dir = filePath.slice(0, lastSlashIndex);// the slice is a method that cuts out part of a string and returns it as a new string. we use it here to get the dir part of the filePath
-const ext = base.slice(base.lastIndexOf("."));//the ext is any thing after the last dot 
-//const filePath = "/Users/mitch/cyf/Module-JS1/week-1/interpret/file.txt";
-//const dir = "/Users/mitch/cyf/Module-JS1/week-1/interpret";
-
-console.log(`The dir part of ${filePath} is ${dir}`);
-console.log(`The ext part of ${filePath} is ${ext}`);   
+const dir = ;
+const ext = ;
 
 // https://www.google.com/search?q=slice+mdn
\ No newline at end of file
diff --git a/Sprint-1/1-key-exercises/4-random.js b/Sprint-1/1-key-exercises/4-random.js
index ee82575d1..292f83aab 100644
--- a/Sprint-1/1-key-exercises/4-random.js
+++ b/Sprint-1/1-key-exercises/4-random.js
@@ -2,53 +2,8 @@ const minimum = 1;
 const maximum = 100;
 
 const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
-console.log(num);
 
 // In this exercise, you will need to work out what num represents?
 // Try breaking down the expression and using documentation to explain what it means
 // It will help to think about the order in which expressions are evaluated
 // Try logging the value of num and running the program several times to build an idea of what the program is doing
-
-//num is a random number between minimum and maximum (inclusive)
-/*Math.random()
-
-This gives you a random decimal number between 0 (inclusive) and 1 (exclusive) — meaning it can be 0, but never exactly 1.
-
-Example outputs:
-0.23 
-
-/*(maximum - minimum + 1)
-
-This calculates how many whole numbers are in the range, including both ends.
-
-Example:
-100 - 1 + 1 = 100
-
-So, there are 100 possible integers from 1 to 100.
-
-/*Math.random() * (maximum - minimum + 1)
-
-This scales the random decimal to the desired range size.
-
-Example if Math.random() gave 0.57:
-0.57 * 100 = 57
-/*Math.floor(...)
-The Math.floor() method in JavaScript is used to round a number down to the nearest integer, regardless of whether the number is positive or negative or has a decimal part.
-Example:
-Math.floor(57.8) → 57
-
-/*+ minimum
-
-Finally, we shift the range up so it starts at 1 instead of 0.
-0–99 becomes 1–100*/
-
-//The order for evaluation is:
-/*maximum - minimum + 1
-
-Math.random() * (that result)
-
-Math.floor(...)
-
-+ minimum*/
-
-//I run the code several times and got different numbers one was 60 the other one was 88
diff --git a/Sprint-1/2-mandatory-errors/0.js b/Sprint-1/2-mandatory-errors/0.js
index bb4556c21..cf6c5039f 100644
--- a/Sprint-1/2-mandatory-errors/0.js
+++ b/Sprint-1/2-mandatory-errors/0.js
@@ -1,6 +1,2 @@
-//This is just an instruction for the first activity - but it is just for human consumption
-//We don't want the computer to run these 2 lines - how can we solve this problem?
-
-
-//if we have any instructions or explanations in our code without the computer executing them,we can use comments
-//comments In javascript are created by using (//) for single line comments
\ No newline at end of file
+This is just an instruction for the first activity - but it is just for human consumption
+We don't want the computer to run these 2 lines - how can we solve this problem?
\ No newline at end of file
diff --git a/Sprint-1/2-mandatory-errors/1.js b/Sprint-1/2-mandatory-errors/1.js
index 8d492ab86..7a43cbea7 100644
--- a/Sprint-1/2-mandatory-errors/1.js
+++ b/Sprint-1/2-mandatory-errors/1.js
@@ -2,7 +2,3 @@
 
 const age = 33;
 age = age + 1;
-// This will give an error because we only use const for Fixed values so we can change const to let
-let age = 33;
-age = age + 1;
-console.log(age); // that should print 34
\ No newline at end of file
diff --git a/Sprint-1/2-mandatory-errors/2.js b/Sprint-1/2-mandatory-errors/2.js
index 023100053..e09b89831 100644
--- a/Sprint-1/2-mandatory-errors/2.js
+++ b/Sprint-1/2-mandatory-errors/2.js
@@ -1,6 +1,5 @@
 // Currently trying to print the string "I was born in Bolton" but it isn't working...
 // what's the error ?
 
-const cityOfBirth = "Bolton";
 console.log(`I was born in ${cityOfBirth}`);
- //we have to declare the variable cityOfBirth with const or let before using it in the console.log statement
+const cityOfBirth = "Bolton";
diff --git a/Sprint-1/2-mandatory-errors/3.js b/Sprint-1/2-mandatory-errors/3.js
index ec4223fd1..ec101884d 100644
--- a/Sprint-1/2-mandatory-errors/3.js
+++ b/Sprint-1/2-mandatory-errors/3.js
@@ -1,18 +1,9 @@
 const cardNumber = 4533787178994213;
 const last4Digits = cardNumber.slice(-4);
-console.log(last4Digits);
+
 // The last4Digits variable should store the last 4 digits of cardNumber
 // However, the code isn't working
 // Before running the code, make and explain a prediction about why the code won't work
-//the slice method is used for strings not numbers.
 // Then run the code and see what error it gives.
-//Uncaught TypeError: cardNumber.slice is not a function
 // Consider: Why does it give this error? Is this what I predicted? If not, what's different?
-//javascript can not slice a number 
 // Then try updating the expression last4Digits is assigned to, in order to get the correct value
-//I have added the console.log to see the output.
-//there is another way to get the last 4 digits by using slice method is to convert the number to a string first by using toString() method
-const last4Digits = cardNumber.toString().slice(-4); //it wil print "4213"
-//If you want it to be a number, you can convert it back:
-const last4Digits = Number(cardNumber.toString().slice(-4));
-Now last4Digits will be 4213 as a number.
\ No newline at end of file
diff --git a/Sprint-1/2-mandatory-errors/4.js b/Sprint-1/2-mandatory-errors/4.js
index 07b8dea17..21dad8c5d 100644
--- a/Sprint-1/2-mandatory-errors/4.js
+++ b/Sprint-1/2-mandatory-errors/4.js
@@ -1,10 +1,2 @@
 const 12HourClockTime = "20:53";
-const 24hourClockTime = "08:53";
-
-//because variables names cannot start with a number
-//I have changed the variable names to start with a letter
-const twelveHourClockTime = "08:53 PM";
-const twentyFourHourClockTime = "20:53";
-console.log(twelveHourClockTime);
-console.log(twentyFourHourClockTime); 
-// that should print "08:53 PM" and "20:53"
\ No newline at end of file
+const 24hourClockTime = "08:53";
\ No newline at end of file
diff --git a/Sprint-1/3-mandatory-interpret/1-percentage-change.js b/Sprint-1/3-mandatory-interpret/1-percentage-change.js
index 3ec5c3051..e24ecb8e1 100644
--- a/Sprint-1/3-mandatory-interpret/1-percentage-change.js
+++ b/Sprint-1/3-mandatory-interpret/1-percentage-change.js
@@ -2,7 +2,7 @@ let carPrice = "10,000";
 let priceAfterOneYear = "8,543";
 
 carPrice = Number(carPrice.replaceAll(",", ""));
-priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," ,""));
+priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," ""));
 
 const priceDifference = carPrice - priceAfterOneYear;
 const percentageChange = (priceDifference / carPrice) * 100;
@@ -12,26 +12,11 @@ console.log(`The percentage change is ${percentageChange}`);
 // Read the code and then answer the questions below
 
 // a) How many function calls are there in this file? Write down all the lines where a function call is made
-//after running the code I found 5 function calls
-//line 1: replaceAll
-//line 2: replaceAll
-//line 4: Number
-//line 5: Number
-//line 8: console.log
+
 // 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?
-// after running the code i found an error in line 5 missing a comma in the replaceAll method to fix it I have added the comma
 
 // 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 = "10,000";
-let priceAfterOneYear = "8,543";
-const priceDifference = carPrice - priceAfterOneYear;
-const percentageChange = (priceDifference / carPrice) * 100;
 
 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
-// Fist the car price is a string so we can't do any calculation on it yet 
-//so first we remove all the comma by using replaceAll method then we convert it to a number by using Number method
\ No newline at end of file
diff --git a/Sprint-1/3-mandatory-interpret/2-time-format.js b/Sprint-1/3-mandatory-interpret/2-time-format.js
index d1e665924..47d239558 100644
--- a/Sprint-1/3-mandatory-interpret/2-time-format.js
+++ b/Sprint-1/3-mandatory-interpret/2-time-format.js
@@ -12,20 +12,14 @@ console.log(result);
 // For the piece of code above, read the code and then answer the following questions
 
 // a) How many variable declarations are there in this program?
-// there is 6 variable declarations 
 
 // b) How many function calls are there?
-// there is only 1 function call which is the last onw in line 10 console.log(result);
 
 // c) Using documentation, explain what the expression movieLength % 60 represents
 // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators
-//modulus operator % gives the remainder after dividing one number by another.which is in this case8784 % 60 = 24 second 
-
 
 // d) Interpret line 4, what does the expression assigned to totalMinutes mean?
-//we are converting the seconds into minutes by dividing by 60 
 
 // e) What do you think the variable result represents? Can you think of a better name for this variable?
-//Duration of the movie in hours, minutes, and seconds.
+
 // f) Try experimenting with different values of movieLength. Will this code work for all values of movieLength? Explain your answer
-//yes it will work for all values of movieLength  because the code will always convert seconds into hours, minutes, and seconds format.
\ No newline at end of file
diff --git a/Sprint-1/3-mandatory-interpret/3-to-pounds.js b/Sprint-1/3-mandatory-interpret/3-to-pounds.js
index 4cb4ce2c7..60c9ace69 100644
--- a/Sprint-1/3-mandatory-interpret/3-to-pounds.js
+++ b/Sprint-1/3-mandatory-interpret/3-to-pounds.js
@@ -24,9 +24,4 @@ console.log(`£${pounds}.${pence}`);
 // Try and describe the purpose / rationale behind each step
 
 // To begin, we can start with
-// 1. const penceString = "399p":  a string variable with the value "399p"
-//2.in line 3 because the value is a string we can't do any calculation on it yet we need to convert it to a number so the first step is to get rid of the letter P at the end so no matter how long the number is we get rid of the last character.
-//3. in line 8 we make sure the number has 3 digits so if needed we add zeros at the start at the number
-//4. const pounds = paddedPenceNumberString.substring(0, paddedPenceNumberString.length - 2);: by taking away the last 2 digit we will get the pounds in this example the amount is 399 so by taking away the 99 we will get 3 pounds 
-//6. const pence = paddedPenceNumberString.substring(paddedPenceNumberString.length - 2).padEnd(2, "0");: the same thing again now extracts the pence part by taking the last two digits if it is one digit we add 0 at the end to make it two digits
-// in line 18 to print the result in the right format £ sign then pounds then a dot and then pence
+// 1. const penceString = "399p": initialises a string variable with the value "399p"
diff --git a/Sprint-1/4-stretch-explore/chrome.md b/Sprint-1/4-stretch-explore/chrome.md
index cbc84b3be..e7dd5feaf 100644
--- a/Sprint-1/4-stretch-explore/chrome.md
+++ b/Sprint-1/4-stretch-explore/chrome.md
@@ -11,14 +11,8 @@ In the Chrome console,
 invoke the function `alert` with an input string of `"Hello world!"`;
 
 What effect does calling the `alert` function have?
-the browser shows a popup message box with your text — "Hello world!"
 
 Now try invoking the function `prompt` with a string input of `"What is your name?"` - store the return value of your call to `prompt` in an variable called `myName`.
 
-let myName = prompt("What is your name?");
-The browser shows a popup with a text input box and OK / Cancel buttons.
-
 What effect does calling the `prompt` function have?
-It display a dialog box that prompts the user for input
 What is the return value of `prompt`?
-The text the user entered (string) if clicked OK, or null if Cancel
diff --git a/Sprint-1/4-stretch-explore/objects.md b/Sprint-1/4-stretch-explore/objects.md
index e2510a537..0216dee56 100644
--- a/Sprint-1/4-stretch-explore/objects.md
+++ b/Sprint-1/4-stretch-explore/objects.md
@@ -5,17 +5,12 @@ In this activity, we'll explore some additional concepts that you'll encounter i
 Open the Chrome devtools Console, type in `console.log` and then hit enter
 
 What output do you get?
-nothing 
 
 Now enter just `console` in the Console, what output do you get back?
-error message 
 
 Try also entering `typeof console`
 
 Answer the following questions:
 
 What does `console` store?
-console store Functions
 What does the syntax `console.log` or `console.assert` mean? In particular, what does the `.` mean?
-console.log  will print the message to the console
-console.assert will print a message if the condition is false

From 566278d0b5b4caadec189a7416dd68fe38c482f7 Mon Sep 17 00:00:00 2001
From: saff-coder <sophi.m.80@gmail.com>
Date: Sat, 8 Nov 2025 22:37:13 +0000
Subject: [PATCH 10/11] The test was edited

---
 Sprint-3/2-practice-tdd/count.test.js | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/Sprint-3/2-practice-tdd/count.test.js b/Sprint-3/2-practice-tdd/count.test.js
index 8a2f9e060..c2c8d0fd7 100644
--- a/Sprint-3/2-practice-tdd/count.test.js
+++ b/Sprint-3/2-practice-tdd/count.test.js
@@ -16,17 +16,18 @@ test("counts a single occurrence of a character", () => {
 // When the function is called with these inputs,
 // Then it should correctly count overlapping occurrences of char (e.g., 'a' appears five times in 'aaaaa').
 test("counts multiple occurrences of a character", () => {
-    expect(countChar("banana", "a")).toEqual(3);
-    expect(countChar("mississippi", "s")).toEqual(4);
-  });
-
-test("should count multiple occurrences of a character", () => {
-  const str = "aaaaa";
-  const Char = "a";
-  const count = countChar(str,Char);
-  expect(count).toEqual(5);
+  expect(countChar("aaaaa", "a")).toEqual(5);
+  expect(countChar("banana", "a")).toEqual(3);
+  expect(countChar("mississippi", "s")).toEqual(4);
 });
 
+//test("should count multiple occurrences of a character", () => {
+ // const str = "aaaaa";
+  //const Char = "a";
+  //const count = countChar(str,Char);
+ // expect(count).toEqual(5);
+//});
+
 // Scenario: No Occurrences
 // Given the input string str,
 // And a character char that does not exist within the case-sensitive str,

From 407bf05712fcd3af1f09b4990a19bc1bf9aa0b92 Mon Sep 17 00:00:00 2001
From: saff-coder <sophi.m.80@gmail.com>
Date: Sun, 9 Nov 2025 00:32:26 +0000
Subject: [PATCH 11/11] more testing scenarios added

---
 Sprint-3/2-practice-tdd/get-ordinal-number.js |  1 +
 .../2-practice-tdd/get-ordinal-number.test.js | 53 ++++++++++++++-----
 2 files changed, 40 insertions(+), 14 deletions(-)

diff --git a/Sprint-3/2-practice-tdd/get-ordinal-number.js b/Sprint-3/2-practice-tdd/get-ordinal-number.js
index db4bc3ff5..fe45ac0eb 100644
--- a/Sprint-3/2-practice-tdd/get-ordinal-number.js
+++ b/Sprint-3/2-practice-tdd/get-ordinal-number.js
@@ -15,6 +15,7 @@ function getOrdinalNumber(num) {
       return num + "rd";
     default:
       return num + "th";
+      
   }
 }
 
diff --git a/Sprint-3/2-practice-tdd/get-ordinal-number.test.js b/Sprint-3/2-practice-tdd/get-ordinal-number.test.js
index bd1d35068..3b9a9907c 100644
--- a/Sprint-3/2-practice-tdd/get-ordinal-number.test.js
+++ b/Sprint-3/2-practice-tdd/get-ordinal-number.test.js
@@ -1,23 +1,48 @@
 const getOrdinalNumber = require("./get-ordinal-number");
+
+
 // In this week's prep, we started implementing getOrdinalNumber
 
 // continue testing and implementing getOrdinalNumber for additional cases
 // Write your tests using Jest - remember to run your tests often for continual feedback
 
-// Case 1: Identify the ordinal number for 1
-// When the number is 1,
-// Then the function should return "1st"
-
-test("should return '1st' for 1", () => {
+// Case 1: Numbers ending in 1 (but not 11)
+test("append 'st' to numbers ending in 1, except those ending in 11", () => {
   expect(getOrdinalNumber(1)).toEqual("1st");
+  expect(getOrdinalNumber(21)).toEqual("21st");
+  expect(getOrdinalNumber(101)).toEqual("101st");
+  expect(getOrdinalNumber(111)).toEqual("111th"); // exception
+});
+
+// Case 2: Numbers ending in 2 (but not 12)
+test("append 'nd' to numbers ending in 2, except those ending in 12", () => {
+  expect(getOrdinalNumber(2)).toEqual("2nd");
+  expect(getOrdinalNumber(22)).toEqual("22nd");
+  expect(getOrdinalNumber(102)).toEqual("102nd");
+  expect(getOrdinalNumber(112)).toEqual("112th"); // exception
 });
-test("should return 'th' for 11, 12, 13", () => {
-  expect(getOrdinalNumber(11)).toBe("11th");
-  expect(getOrdinalNumber(12)).toBe("12th");
-  expect(getOrdinalNumber(13)).toBe("13th");
+// Case 3: Numbers ending in 3 (but not 13)
+test("append 'rd' to numbers ending in 3, except those ending in 13", () => {
+  expect(getOrdinalNumber(3)).toEqual("3rd");
+  expect(getOrdinalNumber(23)).toEqual("23rd");
+  expect(getOrdinalNumber(103)).toEqual("103rd");
+  expect(getOrdinalNumber(113)).toEqual("113th"); // exception
 });
-test("should return correct ordinal for numbers > 20", () => {
-  expect(getOrdinalNumber(21)).toBe("21st");
-  expect(getOrdinalNumber(22)).toBe("22nd");
-  expect(getOrdinalNumber(23)).toBe("23rd");    
-});
\ No newline at end of file
+// Case 4: Numbers ending in 4–9 or exceptions (11, 12, 13)
+test("append 'th' to numbers ending in 4–9 or ending with 11, 12, or 13", () => {
+  expect(getOrdinalNumber(4)).toEqual("4th");
+  expect(getOrdinalNumber(9)).toEqual("9th");
+  expect(getOrdinalNumber(11)).toEqual("11th");
+  expect(getOrdinalNumber(12)).toEqual("12th");
+  expect(getOrdinalNumber(13)).toEqual("13th");
+});
+  // Optional: edge cases
+  test("should handle 0 and large numbers correctly", () => {
+    expect(getOrdinalNumber(0)).toBe("0th");
+    expect(getOrdinalNumber(1000001)).toBe("1000001st"); // ends with 1, not teen
+    expect(getOrdinalNumber(1000012)).toBe("1000012th"); // ends with 12 -> teen
+  
+  });
+
+
+