completed all tasks in sprint 2

Author: Dan2Clouted

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

@@ -3,6 +3,8 @@
 // Predict the output of the following code:
 // =============> Write your prediction here
 
+//I predict that it will print out the wrong last digit of all numbers.
+
 const num = 103;
 
 function getLastDigit() {
@@ -15,10 +17,28 @@ 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
+
+// The output is the way it is because the function "getLastDigit" is using a global variable "num" which is set to 103. So, regardless of the input passed to the function, it will always return the last digit of 103, which is 3.
+
 // Finally, correct the code to fix the problem
 // =============> write your new code here
 
+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
+
+// The function "getLastDigit" is not working properly because it is using a global variable "num" instead of accepting and using a function. Adding `num`as a parameter makes the function work with any number passed in.

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

@@ -15,5 +15,6 @@
 // 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 the BMI of someone based off their weight and height
+  return (weight / (height * height)).toFixed(1);
+}

Sprint-2/3-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 toUpperSnakeCase(str) {
+  return str.replaceAll(" ", "_").toUpperCase();
+}

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

@@ -4,3 +4,29 @@
 // You will need to declare a function called toPounds with an appropriately named parameter.
 
 // You should call this function a number of times to check it works for different inputs
+
+function toPounds(penceString) {
+  const penceStringWithoutTrailingP = penceString.substring(
+    0,
+    penceString.length - 1
+  );
+
+  const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0");
+
+  const pounds = paddedPenceNumberString.substring(
+    0,
+    paddedPenceNumberString.length - 2
+  );
+
+  const pence = paddedPenceNumberString
+    .substring(paddedPenceNumberString.length - 2)
+    .padEnd(2, "0");
+
+  return `£${pounds}.${pence}`;
+}
+
+// Call the function a number of times to check it works
+console.log(toPounds("399p")); // £3.99
+console.log(toPounds("45p")); // £0.45
+console.log(toPounds("8p")); // £0.08
+console.log(toPounds("1200p")); // £12.00

Sprint-2/4-mandatory-interpret/time-format.js

@@ -19,16 +19,26 @@ function formatTimeDisplay(seconds) {
 // a) When formatTimeDisplay is called how many times will pad be called?
 // =============> write your answer here
 
+// pad will be called 3 times because it is used for minutes, hours and seconds in the return string.
+
 // 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
 
+// 0, The first call is pad(totalHours),and for 61 seconds, totalHours will be 0 because 61 seconds is less than 1 hour.
+
 // c) What is the return value of pad is called for the first time?
 // =============> write your answer here
 
+// 00, pad(0) converts 0 to "0" and padStart(2, "0") makes it "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
 
+// 1, the last call is pad(remainingSeconds), and for 61 seconds, 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
+
+// 01, the last call is pad(1). pad converts 1 to "1", then padStart(2, "0") adds a leading zero, so it returns "01"

Sprint-2/5-stretch-extend/format-time.js

@@ -2,24 +2,56 @@
 // 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 hours = Number(time.slice(0, 2));
-  if (hours > 12) {
-    return `${hours - 12}:00 pm`;
-  }
-  return `${time} am`;
-}
-
-const currentOutput = formatAs12HourClock("08:00");
-const targetOutput = "08:00 am";
+const currentOutput3 = formatAs12HourClock("00:00");
+const targetOutput3 = "12:00 am";
 console.assert(
-  currentOutput === targetOutput,
-  `current output: ${currentOutput}, target output: ${targetOutput}`
+  currentOutput3 === targetOutput3,
+  `current output: ${currentOutput3}, target output: ${targetOutput3}`
 );
 
-const currentOutput2 = formatAs12HourClock("23:00");
-const targetOutput2 = "11:00 pm";
+const currentOutput4 = formatAs12HourClock("12:00");
+const targetOutput4 = "12:00 pm";
 console.assert(
-  currentOutput2 === targetOutput2,
-  `current output: ${currentOutput2}, target output: ${targetOutput2}`
+  currentOutput4 === targetOutput4,
+  `current output: ${currentOutput4}, target output: ${targetOutput4}`
 );
+
+const currentOutput5 = formatAs12HourClock("00:45");
+const targetOutput5 = "12:45 am";
+console.assert(
+  currentOutput5 === targetOutput5,
+  `current output: ${currentOutput5}, target output: ${targetOutput5}`
+);
+
+const currentOutput6 = formatAs12HourClock("12:30");
+const targetOutput6 = "12:30 pm";
+console.assert(
+  currentOutput6 === targetOutput6,
+  `current output: ${currentOutput6}, target output: ${targetOutput6}`
+);
+
+const currentOutput7 = formatAs12HourClock("13:05");
+const targetOutput7 = "01:05 pm";
+console.assert(
+  currentOutput7 === targetOutput7,
+  `current output: ${currentOutput7}, target output: ${targetOutput7}`
+);
+
+// I tested the function with edge cases around midnight and noon.
+// I found that the original function handled times like "08:00" and "23:00",
+// but it did not correctly handle "00:xx" (midnight times) or "12:xx" (noon times).
+
+// Bugs found:
+// - "00:00" returned "00:00 am" instead of "12:00 am"
+// - "00:45" returned "00:45 am" instead of "12:45 am"
+// - "12:00" returned "12:00 am" instead of "12:00 pm"
+
+// Fix:
+// I added separate conditions for:
+// - hours === 0  (midnight -> 12:xx am)
+// - hours === 12 (noon -> 12:xx pm)
+// - hours > 12   (convert to pm by subtracting 12)
+// I also kept the minutes using time.slice(2), so the ":MM" part stays the same.
+
+// After fixing, the function correctly formats morning, noon, afternoon,
+// evening, and midnight times in 12-hour clock format.