Sprint 2 redone

Author: Ayogit1

Sprint-2/2-mandatory-debug/2.js

@@ -1,7 +1,9 @@
 // Predict and explain first...
 
+
 // Predict the output of the following code:
-// =============> Write your prediction here. It may run but give incorrect results because of const num & no parameter specified
+// =============> Write your prediction here.
+// //ANS: To return the last digit of num as a string.
 
 
 const num = 103;
@@ -20,15 +22,31 @@ console.log(`The last digit of 806 is ${getLastDigit(806)}`);
 // 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. num is a constant variable, it's value cannot change.
+// =============> write your explanation here. 
+// //ANS: 
+// num is a constant variable, a hardcoded reference.
+//The function getLastDigit is currently ignoring the arguments you pass to it(42, 105, 806) because of two main issues:
+
+//Missing Parameter: The function definition function getLastDigit() does not have a parameter inside the parentheses.In JavaScript, if you pass an argument to a function that hasn't defined a parameter to receive it, the function simply ignores that input.
+
+//Scope and Variable Reference: Inside the function, you are explicitly calling num.toString().Since num isn't defined inside the function, the engine looks at the Global Scope, finds const num = 103, and uses that value every single time the function runs.
+
 // Finally, correct the code to fix the problem
 // =============> write your new code here
-function getLastDigit() {
-  return num.toString().slice(-1);
+const num = 103; // This is now ignored by the function
+
+// We add 'n' as a parameter to "catch" the numbers we pass in
+function getLastDigit(n) {
+  // We call toString() on 'n' instead of the global 'num'
+  return n.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
-// getLastDigit is not working properly because the value for num is fixed at '103'
-function getLastDigit(num) {
-  return num.toString().slice(-1);
-}
+//ANS: Done above.
+// ANS:getLastDigit was not working properly because the value for num is fixed at '103'
+

Sprint-2/3-mandatory-implement/1-bmi.js

@@ -15,6 +15,13 @@
 // It should return their Body Mass Index to 1 decimal place
 
 function calculateBMI(weight, height) {
-    // return the BMI of someone based off their weight and height
-    return Math.round((weight) / (height ** 2)).toFixed(1)
-}
+    // BMI = kg / m^2
+    const bmi = weight / (height * height);
+
+    // .toFixed(1) rounds to 1 decimal place and returns a string
+    return bmi.toFixed(1);
+}
+
+// Example usage:
+const myBMI = calculateBMI(70, 1.73);
+console.log(`The calculated BMI is: ${myBMI}`); // Output: "23.4"

Sprint-2/3-mandatory-implement/2-cases.js

@@ -14,7 +14,15 @@
 // 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 upCase(strCar) {
-    let result = strCar.toUpperCase().replaceAll(" ", "_");
-    return result;
+
+
+function toUpperSnakeCase(text) {
+    // 1. replaceAll(' ', '_') swaps every space for an underscore
+    // 2. toUpperCase() converts the letters to all caps
+    return text.replaceAll(' ', '_').toUpperCase();
 }
+
+// Examples:
+console.log(toUpperSnakeCase("hello there"));         // "HELLO_THERE"
+console.log(toUpperSnakeCase("lord of the rings"));  // "LORD_OF_THE_RINGS"
+console.log(toUpperSnakeCase("javascript is fun"));   // "JAVASCRIPT_IS_FUN"

Sprint-2/3-mandatory-implement/3-to-pounds.js

@@ -5,22 +5,39 @@
 
 // You should call this function a number of times to check it works for different inputs
 
-function toPounds(money) {
-    const moneyWithoutTrailingP = money.substring(
+/**
+ * Converts a pence string (e.g., "399p") into a formatted pound string (e.g., "£3.99")
+ * @param {string} penceString - The input string ending in 'p'
+ */
+function toPounds(penceString) {
+    // 1. Remove the trailing 'p'
+    const penceStringWithoutTrailingP = penceString.substring(
         0,
-        money.length - 1
+        penceString.length - 1
     );
-    const paddedPenceNumberString = moneyWithoutTrailingP.padStart(3, "0");
+
+    // 2. Pad with leading zeros to ensure at least 3 characters (e.g., "5p" -> "005")
+    const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0");
+
+    // 3. Extract the pounds (everything except the last two digits)
     const pounds = paddedPenceNumberString.substring(
         0,
         paddedPenceNumberString.length - 2
     );
+
+    // 4. Extract the pence (the last two digits)
     const pence = paddedPenceNumberString
         .substring(paddedPenceNumberString.length - 2)
         .padEnd(2, "0");
-    result = pounds + "." + pence;
-    res = `£${pounds}.${pence}`;
-    return res;
+
+    // 5. Return the formatted string
+    return `£${pounds}.${pence}`;
 }
-console.log(toPounds("399p"))
-console.log(toPounds("1099p"))
+
+// --- Testing the function with different inputs ---
+
+console.log(toPounds("399p"));  // Expected: £3.99
+console.log(toPounds("50p"));   // Expected: £0.50
+console.log(toPounds("1250p")); // Expected: £12.50
+console.log(toPounds("8p"));    // Expected: £0.08
+console.log(toPounds("1002p")); // Expected: £10.02

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.pad will be called three times.
+// =============> write your answer here.
+// //ANS: 3 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. the value assigned to num when pad is called for the first time is 00
+// =============> write your answer here.
+// ANS: the value assigned to num when pad is 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. the return value of pad is called for the first time is '00'
+// =============> write your answer here.
+// //ANS: the return value of pad is called for the first time is '00'
 
 // d) What is the value assigned to num when pad is called for the last time in this program?  Explain your answer
-// =============> write your answer here. the value assigned to num when pad is called for the last time is 01
+// =============> write your answer here.
+// ANS: the value assigned to num when pad is called for the last time is 1
 
 // e) What is the return value assigned to num when pad is called for the last time in this program?  Explain your answer
-// =============> write your answer here. the return value assigned to num when pad is called for the last time in this program is '01'
+// =============> write your answer here.
+// ANS: Sthe return value assigned to num when pad is called for the last time in this program is '01'