From e4c70144c1e00991fbfd72aed31bce31fb6d3287 Mon Sep 17 00:00:00 2001
From: HannaOdud <annodud@gmail.com>
Date: Tue, 7 Oct 2025 21:07:50 +0100
Subject: [PATCH 1/4] Sprint2

---
 Sprint-2/1-key-errors/0.js                    | 14 +++++++++----
 Sprint-2/1-key-errors/1.js                    | 16 ++++++++++----
 Sprint-2/1-key-errors/2.js                    | 15 ++++++++-----
 Sprint-2/2-mandatory-debug/0.js               | 15 +++++++++----
 Sprint-2/2-mandatory-debug/1.js               | 16 +++++++++-----
 Sprint-2/2-mandatory-debug/2.js               | 20 +++++++++++++-----
 Sprint-2/3-mandatory-implement/1-bmi.js       |  5 ++++-
 Sprint-2/3-mandatory-implement/2-cases.js     |  6 ++++++
 Sprint-2/3-mandatory-implement/3-to-pounds.js | 21 +++++++++++++++++++
 Sprint-2/4-mandatory-interpret/time-format.js | 15 ++++++++-----
 10 files changed, 110 insertions(+), 33 deletions(-)

diff --git a/Sprint-2/1-key-errors/0.js b/Sprint-2/1-key-errors/0.js
index 653d6f5a0..06082239d 100644
--- a/Sprint-2/1-key-errors/0.js
+++ b/Sprint-2/1-key-errors/0.js
@@ -1,13 +1,19 @@
 // Predict and explain first...
-//  =============> write your prediction here
+//  =============> my explanation: I see here declaration of str variable, which already exist as an argument. It will cause an error.
 
 // call the function capitalise with a string input
 // interpret the error message and figure out why an error is occurring
-
+//===============>SyntaxError: Identifier 'str' has already been declared, its occured while execution of code.
+/*
 function capitalise(str) {
   let str = `${str[0].toUpperCase()}${str.slice(1)}`;
   return str;
 }
-
-// =============> write your explanation here
+  */
+// =============> write your explanation here. My explanation: We have to change the name of variable and return it in order to fix an error.
 // =============> write your new code here
+function capitalise(str) {
+  let strChanged = `${str[0].toUpperCase()}${str.slice(1)}`;
+  return strChanged;
+}
+console.log(capitalise("some string"));
\ No newline at end of file
diff --git a/Sprint-2/1-key-errors/1.js b/Sprint-2/1-key-errors/1.js
index f2d56151f..692cefb42 100644
--- a/Sprint-2/1-key-errors/1.js
+++ b/Sprint-2/1-key-errors/1.js
@@ -1,11 +1,12 @@
 // Predict and explain first...
 
 // Why will an error occur when this program runs?
-// =============> write your prediction here
+// =============> write your prediction here. My prediction: Value decimalNumber is a  parameter to the convertToPercentage. We don't need to declare it at line 10. 
+// =============> Also at line 16, we have to call function coverToPercentage with an argument. 
 
 // 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}%`;
 
@@ -13,8 +14,15 @@ function convertToPercentage(decimalNumber) {
 }
 
 console.log(decimalNumber);
-
-// =============> write your explanation here
+*/
+// =============> write your explanation here. My explanation: We need to modify this function. I'm going to remove line where decimalNumber is declared and execute the function properly.
 
 // Finally, correct the code to fix the problem
 // =============> write your new code here
+
+function convertToPercentage(decimalNumber) {
+  const percentage = `${decimalNumber * 100}%`;
+  return percentage;
+}
+
+console.log(convertToPercentage(0.1));
diff --git a/Sprint-2/1-key-errors/2.js b/Sprint-2/1-key-errors/2.js
index aad57f7cf..d13242747 100644
--- a/Sprint-2/1-key-errors/2.js
+++ b/Sprint-2/1-key-errors/2.js
@@ -3,18 +3,23 @@
 
 // this function should square any number but instead we're going to get an error
 
-// =============> write your prediction of the error here
-
+// =============> write your prediction of the error here My prediction: There is an error with parameter.
+/*
 function square(3) {
     return num * num;
 }
+console.log(square)
+*/
+// =============> write the error message here: SyntaxError: Unexpected number 
 
-// =============> write the error message here
-
-// =============> explain this error message here
+// =============> explain this error message here: An error because of invalid parameter.
 
 // Finally, correct the code to fix the problem
 
 // =============> write your new code here
+function square(num) {
+    return num * num;
+}
+console.log(square(3))
 
 
diff --git a/Sprint-2/2-mandatory-debug/0.js b/Sprint-2/2-mandatory-debug/0.js
index b27511b41..c3bb65445 100644
--- a/Sprint-2/2-mandatory-debug/0.js
+++ b/Sprint-2/2-mandatory-debug/0.js
@@ -1,14 +1,21 @@
 // Predict and explain first...
 
-// =============> write your prediction here
-
+// =============> write your prediction here: This function return nothing.
+/*
 function multiply(a, b) {
   console.log(a * b);
 }
 
 console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
-
-// =============> write your explanation here
+*/
+// =============> write your explanation here: We need to modify this function. 
+// =============> Create a new variable where we have to do the following calculation, after that return this new variable.
 
 // Finally, correct the code to fix the problem
 //  =============> write your new code here
+function multiply(a, b) {
+  resultOfMultiply = a*b;
+  return resultOfMultiply
+}
+
+console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
\ No newline at end of file
diff --git a/Sprint-2/2-mandatory-debug/1.js b/Sprint-2/2-mandatory-debug/1.js
index 37cedfbcf..40a74c7f0 100644
--- a/Sprint-2/2-mandatory-debug/1.js
+++ b/Sprint-2/2-mandatory-debug/1.js
@@ -1,13 +1,19 @@
 // Predict and explain first...
-//  =============> write your prediction here
-
+//  =============> write your prediction here: wrong calculation and return nothing.
+/*
 function sum(a, b) {
   return;
   a + b;
 }
 
 console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
-
-// =============> write your explanation here
+*/
+// =============> write your explanation here: We need to create a variable where we have to store our calculation and return it.
 // Finally, correct the code to fix the problem
-//  =============> write your new code here
+//  =============> write your new code 
+function sum(a, b) {
+  resultOfAdding = a + b;
+  return resultOfAdding
+}
+
+console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
diff --git a/Sprint-2/2-mandatory-debug/2.js b/Sprint-2/2-mandatory-debug/2.js
index 57d3f5dc3..a82e22a0b 100644
--- a/Sprint-2/2-mandatory-debug/2.js
+++ b/Sprint-2/2-mandatory-debug/2.js
@@ -1,24 +1,34 @@
 // Predict and explain first...
 
 // Predict the output of the following code:
-// =============> Write your prediction here
-
+// =============> Write your prediction here: Function getLastDigit return num. 
+/*
 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
-// =============> write the output here
+// =============> write the output here: output is last digit of variable num.
 // Explain why the output is the way it is
-// =============> write your explanation here
+// =============> write your explanation here: Because num is global and function's parameter is absent .
 // Finally, correct the code to fix the problem
 // =============> write your new code here
+const num = 103;
+
+function getLastDigit(num) {
+  let digit = num.toString().slice(-1);
+  return digit
+}
+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-2/3-mandatory-implement/1-bmi.js b/Sprint-2/3-mandatory-implement/1-bmi.js
index 17b1cbde1..576434f5c 100644
--- a/Sprint-2/3-mandatory-implement/1-bmi.js
+++ b/Sprint-2/3-mandatory-implement/1-bmi.js
@@ -16,4 +16,7 @@
 
 function calculateBMI(weight, height) {
     // return the BMI of someone based off their weight and height
-}
\ No newline at end of file
+    resultBmi = weight/Math.pow(height,2);
+    return resultBmi.toFixed(1);
+}
+console.log(calculateBMI(70, 1.73));
\ No newline at end of file
diff --git a/Sprint-2/3-mandatory-implement/2-cases.js b/Sprint-2/3-mandatory-implement/2-cases.js
index 5b0ef77ad..93d718bad 100644
--- a/Sprint-2/3-mandatory-implement/2-cases.js
+++ b/Sprint-2/3-mandatory-implement/2-cases.js
@@ -14,3 +14,9 @@
 // You will need to come up with an appropriate name for the function
 // Use the MDN string documentation to help you find a solution
 // This might help https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/toUpperCase
+
+function upperSnakeCase(text){
+    let textUpper = text.toUpperCase();
+    return textUpper.replace(" ", "_");
+}
+console.log(upperSnakeCase("hello here"));
\ No newline at end of file
diff --git a/Sprint-2/3-mandatory-implement/3-to-pounds.js b/Sprint-2/3-mandatory-implement/3-to-pounds.js
index 6265a1a70..e7e110820 100644
--- a/Sprint-2/3-mandatory-implement/3-to-pounds.js
+++ b/Sprint-2/3-mandatory-implement/3-to-pounds.js
@@ -1,6 +1,27 @@
+/*
 // In Sprint-1, there is a program written in interpret/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){
+    let penceStringWithoutTrailingP;
+    if (penceString.charAt(penceString.length - 1) == "p"){
+        penceStringWithoutTrailingP = penceString.substring( 0, penceString.length - 1);
+    } else {
+        penceStringWithoutTrailingP = penceString;
+    }
+    const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0");
+    const pounds = paddedPenceNumberString.substring(0, paddedPenceNumberString.length - 2);
+
+    const pence = paddedPenceNumberString.substring(paddedPenceNumberString.length - 2).padEnd(2, "0");
+
+    console.log(`£${pounds}.${pence}`);
+}
+toPounds("200");
+toPounds("200p");
+toPounds("20");
+toPounds("2");
diff --git a/Sprint-2/4-mandatory-interpret/time-format.js b/Sprint-2/4-mandatory-interpret/time-format.js
index 7c98eb0e8..81c1cb6a3 100644
--- a/Sprint-2/4-mandatory-interpret/time-format.js
+++ b/Sprint-2/4-mandatory-interpret/time-format.js
@@ -17,18 +17,23 @@ function formatTimeDisplay(seconds) {
 // Questions
 
 // a) When formatTimeDisplay is called how many times will pad be called?
-// =============> write your answer here
+// =============> // 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
+// =============> 61%60=1/61-1/60=1/60%60=0, the value assigned to num when pad called for the first time is 0.
 
 // c) What is the return value of pad is called for the first time?
-// =============> write your answer here
+// =============> write your answer here: "00".
 
 // d) What is the value assigned to num when pad is called for the last time in this program?  Explain your answer
-// =============> write your answer here
+// =============> write your answer here: remainingSeconds 61%60=1.
 
 // e) What is the return value assigned to num when pad is called for the last time in this program?  Explain your answer
-// =============> write your answer here
+// =============> write your answer here: "01" because of .padStart(2, "0")
+console.log(pad(0));
+console.log(pad(1));
+console.log(pad(123));
+console.log(formatTimeDisplay(61));
+

From 2322d4dd8e5ac2eac444733fee96239a9a5fb7a1 Mon Sep 17 00:00:00 2001
From: HannaOdud <annodud@gmail.com>
Date: Sat, 11 Oct 2025 14:06:32 +0100
Subject: [PATCH 2/4] Task 5 on the Stretch-extend

---
 Sprint-2/5-stretch-extend/format-time.js | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/Sprint-2/5-stretch-extend/format-time.js b/Sprint-2/5-stretch-extend/format-time.js
index 32a32e66b..6817b47f9 100644
--- a/Sprint-2/5-stretch-extend/format-time.js
+++ b/Sprint-2/5-stretch-extend/format-time.js
@@ -23,3 +23,24 @@ console.assert(
   currentOutput2 === targetOutput2,
   `current output: ${currentOutput2}, target output: ${targetOutput2}`
 );
+
+const currentOutput3 = formatAs12HourClock("5:00");
+const targetOutput3 = "5:00 am";
+console.assert(
+  currentOutput3 === targetOutput3,
+  `current output: ${currentOutput3}, target output: ${targetOutput3}`
+);
+
+const currentOutput4 = formatAs12HourClock("240:00");
+const targetOutput4 = "12:00 pm";
+console.assert(
+  currentOutput4 === targetOutput4,
+  `current output: ${currentOutput4}, target output: ${targetOutput4}`
+);
+const currentOutput5 = formatAs12HourClock("00:00")
+const targetOutput5 = "00:00 am";
+console.assert(
+  currentOutput5 === targetOutput5,
+  `current output: ${currentOutput5}, target output: ${targetOutput5}`
+);
+ 
\ No newline at end of file

From 44e08de35a59e90453a5bcf1c7ee996dbcb82bcf Mon Sep 17 00:00:00 2001
From: HannaOdud <annodud@gmail.com>
Date: Sat, 11 Oct 2025 14:22:51 +0100
Subject: [PATCH 3/4] Task 5 Stretch-extend

---
 Sprint-2/5-stretch-extend/format-time.js | 2 ++
 time.js                                  | 8 ++++++++
 2 files changed, 10 insertions(+)
 create mode 100644 time.js

diff --git a/Sprint-2/5-stretch-extend/format-time.js b/Sprint-2/5-stretch-extend/format-time.js
index 6817b47f9..135a09f51 100644
--- a/Sprint-2/5-stretch-extend/format-time.js
+++ b/Sprint-2/5-stretch-extend/format-time.js
@@ -24,6 +24,8 @@ console.assert(
   `current output: ${currentOutput2}, target output: ${targetOutput2}`
 );
 
+/* test */
+
 const currentOutput3 = formatAs12HourClock("5:00");
 const targetOutput3 = "5:00 am";
 console.assert(
diff --git a/time.js b/time.js
new file mode 100644
index 000000000..f42e24f9b
--- /dev/null
+++ b/time.js
@@ -0,0 +1,8 @@
+function formatAs12HourClock() {}
+
+const currentOutput = formatAs12HourClock("08:00");
+const targetOutput = "08:00 am";
+console.assert(
+  currentOutput === targetOutput,
+  `current output: ${currentOutput}, target output: ${targetOutput}`
+);
\ No newline at end of file

From 658f36152847d771e090146c99267366c8e5f8af Mon Sep 17 00:00:00 2001
From: HannaOdud <annodud@gmail.com>
Date: Thu, 16 Oct 2025 18:15:52 +0100
Subject: [PATCH 4/4] Changes according to PR review.

---
 Sprint-2/1-key-errors/0.js              | 3 +--
 Sprint-2/1-key-errors/1.js              | 3 +--
 Sprint-2/2-mandatory-debug/0.js         | 3 +--
 Sprint-2/2-mandatory-debug/1.js         | 3 +--
 Sprint-2/2-mandatory-debug/2.js         | 3 +--
 Sprint-2/3-mandatory-implement/1-bmi.js | 3 +--
 6 files changed, 6 insertions(+), 12 deletions(-)

diff --git a/Sprint-2/1-key-errors/0.js b/Sprint-2/1-key-errors/0.js
index 06082239d..31f78b44a 100644
--- a/Sprint-2/1-key-errors/0.js
+++ b/Sprint-2/1-key-errors/0.js
@@ -13,7 +13,6 @@ function capitalise(str) {
 // =============> write your explanation here. My explanation: We have to change the name of variable and return it in order to fix an error.
 // =============> write your new code here
 function capitalise(str) {
-  let strChanged = `${str[0].toUpperCase()}${str.slice(1)}`;
-  return strChanged;
+  return `${str[0].toUpperCase()}${str.slice(1)}`;
 }
 console.log(capitalise("some string"));
\ No newline at end of file
diff --git a/Sprint-2/1-key-errors/1.js b/Sprint-2/1-key-errors/1.js
index 692cefb42..c1ed0e842 100644
--- a/Sprint-2/1-key-errors/1.js
+++ b/Sprint-2/1-key-errors/1.js
@@ -21,8 +21,7 @@ console.log(decimalNumber);
 // =============> write your new code here
 
 function convertToPercentage(decimalNumber) {
-  const percentage = `${decimalNumber * 100}%`;
-  return percentage;
+   return `${decimalNumber * 100}%`;
 }
 
 console.log(convertToPercentage(0.1));
diff --git a/Sprint-2/2-mandatory-debug/0.js b/Sprint-2/2-mandatory-debug/0.js
index c3bb65445..feba642bd 100644
--- a/Sprint-2/2-mandatory-debug/0.js
+++ b/Sprint-2/2-mandatory-debug/0.js
@@ -14,8 +14,7 @@ console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
 // Finally, correct the code to fix the problem
 //  =============> write your new code here
 function multiply(a, b) {
-  resultOfMultiply = a*b;
-  return resultOfMultiply
+  return a*b;
 }
 
 console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
\ No newline at end of file
diff --git a/Sprint-2/2-mandatory-debug/1.js b/Sprint-2/2-mandatory-debug/1.js
index 40a74c7f0..3f847e275 100644
--- a/Sprint-2/2-mandatory-debug/1.js
+++ b/Sprint-2/2-mandatory-debug/1.js
@@ -12,8 +12,7 @@ console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
 // Finally, correct the code to fix the problem
 //  =============> write your new code 
 function sum(a, b) {
-  resultOfAdding = a + b;
-  return resultOfAdding
+    return  a + b;
 }
 
 console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
diff --git a/Sprint-2/2-mandatory-debug/2.js b/Sprint-2/2-mandatory-debug/2.js
index a82e22a0b..05bcdac86 100644
--- a/Sprint-2/2-mandatory-debug/2.js
+++ b/Sprint-2/2-mandatory-debug/2.js
@@ -23,8 +23,7 @@ console.log(`The last digit of 806 is ${getLastDigit(806)}`);
 const num = 103;
 
 function getLastDigit(num) {
-  let digit = num.toString().slice(-1);
-  return digit
+  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)}`);
diff --git a/Sprint-2/3-mandatory-implement/1-bmi.js b/Sprint-2/3-mandatory-implement/1-bmi.js
index 576434f5c..49f6cbd93 100644
--- a/Sprint-2/3-mandatory-implement/1-bmi.js
+++ b/Sprint-2/3-mandatory-implement/1-bmi.js
@@ -16,7 +16,6 @@
 
 function calculateBMI(weight, height) {
     // return the BMI of someone based off their weight and height
-    resultBmi = weight/Math.pow(height,2);
-    return resultBmi.toFixed(1);
+    return weight/Math.pow(height,2);
 }
 console.log(calculateBMI(70, 1.73));
\ No newline at end of file