London | 26-Sept-TIP | Hugh Mills| Sprint 3 | Sprint 3 coursework

Sprint-3/1-key-errors/0.js

@@ -4,10 +4,15 @@
 // 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;
-}
+// function capitalise(str) {
+//   let str = `${str[0].toUpperCase()}${str.slice(1)}`;
+//   return str;
+// }
 
 // =============> write your explanation here
+// The str has already been called so when its been set to the "let = str" it wont work as its already part of the function, so the name needs to change.
 // =============> write your new code here
+function capitalise(str) {
+  let capitaliseStr = `${str[0].toUpperCase()}${str.slice(1)}`;
+  return str;
+}

Sprint-3/1-key-errors/1.js

@@ -2,19 +2,31 @@
 
 // Why will an error occur when this program runs?
 // =============> write your prediction here
+// decimalNumber is part of the function so it cant be set with const decimalNumber, the name needs to be different.
+// console.log(decimalNumber) causes an issue as well, decimalNumber is part of the function, it should request convertToPercentage for it to work.
 
 // Try playing computer with the example to work out what is going on
 
-function convertToPercentage(decimalNumber) {
-  const decimalNumber = 0.5;
-  const percentage = `${decimalNumber * 100}%`;
+// function convertToPercentage(decimalNumber) {
+//   const decimalNumber = 0.5;
+//   const percentage = `${decimalNumber * 100}%`;
 
-  return percentage;
-}
+//   return percentage;
+// }
 
-console.log(decimalNumber);
+// console.log(decimalNumber);
 
 // =============> write your explanation here
+// console.log(decimalNumber) will not work as decimalNumber is inside the function,
+// and "const devimalNumber = 0.5" has already been called from teh function. You need to change the name or apply the value in the call on consol.log()
+
 
 // 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(0.5));

Sprint-3/1-key-errors/2.js

@@ -1,20 +1,28 @@
 
 // Predict and explain first BEFORE you run any code...
 
-// this function should square any number but instead we're going to get an error
+// the function square(3) wont work as you cant have a number value for the function.
 
 // =============> write your prediction of the error here
+// return num * num; wont work as 
 
-function square(3) {
-    return num * num;
-}
+// function square(3) {
+//     return num * num;
+// }
 
 // =============> write the error message here
+//  SyntaxError: Unexpected number
 
 // =============> explain this error message here
+// in the () is the parameter for the function and that cannot be a number as it has to be a name, following the same rules
+// that are used so it can't start with a number.
 
 // Finally, correct the code to fix the problem
 
 // =============> write your new code here
+function square(num) {
+    return num * num;
+}
 
 
+console.log(square(3));

Sprint-3/2-mandatory-debug/0.js

@@ -1,14 +1,23 @@
 // Predict and explain first...
 
 // =============> write your prediction here
+// syntax error as console.log(a, b) cant be part of the function.
 
-function multiply(a, b) {
-  console.log(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
+// I was wrong, it is showing the answer with console.log but giving undefined for the other as the function is incomplete.
 
 // Finally, correct the code to fix the problem
 //  =============> write your new code here
+
+function multiply(a, b) {
+  let answer = (a * b);
+  return answer
+}
+
+console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);

Sprint-3/2-mandatory-debug/1.js

@@ -1,13 +1,20 @@
 // Predict and explain first...
 //  =============> write your prediction here
+// Going to show undefined
 
-function sum(a, b) {
-  return;
-  a + b;
-}
+// function sum(a, b) {
+//   return;
+//   a + b;
+// }
 
 console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
 
 // =============> write your explanation here
+// the code is not doing the sum needed of a + b as they are just split by the ; , 
+
 // Finally, correct the code to fix the problem
 //  =============> write your new code here
+
+function sum(a, b) {
+  return a + b;
+}

Sprint-3/2-mandatory-debug/2.js

@@ -1,24 +1,41 @@
 // Predict and explain first...
 
-// Predict the output of the following code:
+// Predict the output of the following code: 
 // =============> Write your prediction here
+// num is made to be 103, so every .log will have the answer being 3.
+// function getLasDigit() has no parameter set, so the number set 
 
-const num = 103;
+// const num = 103;
 
-function getLastDigit() {
-  return num.toString().slice(-1);
-}
+// 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)}`);
+// 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
+// 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
+// const num = 103 is making it that num is always 103, also function getLastDigit() has no parameter set.
+// This makes it that the value from teh console.log() wont be used.
+
 // 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

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

@@ -15,5 +15,10 @@
 // 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
+  let squaring=height * height;
+  return (weight / squaring).toFixed(2);
+
 }
+
+console.log(calculateBMI(100, 1.85));
+console.log(calculateBMI(80, 1.75));

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

@@ -14,3 +14,10 @@
 // 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 upperCase = text.toUpperCase("");
+    return upperCase.replaceAll(" ", "_");
+}
+
+console.log(upperSnakeCase("Hello World"))

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

@@ -4,3 +4,48 @@
 // 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
+
+// const penceString = "399p";
+
+// 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");
+
+// console.log(`£${pounds}.${pence}`);
+
+function poundsAndPence(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}`);
+}
+
+console.log(poundsAndPence("399p"))
+console.log(poundsAndPence("599p"))
+console.log(poundsAndPence("1796p"))
+console.log(poundsAndPence("562p"))
+console.log(poundsAndPence("2p"))
+// const penceString = "399p";

Sprint-3/4-mandatory-interpret/time-format.js

@@ -1,38 +1,52 @@
+console.log("entered data")
 function pad(num) {
+  console.log("pad has been called: Num is", num);
   let numString = num.toString();
   while (numString.length < 2) {
     numString = "0" + numString;
   }
+  console.log("numString: ", numString);
   return numString;
 }
 
 function formatTimeDisplay(seconds) {
+  console.log("entered formatTimeDisplay");
   const remainingSeconds = seconds % 60;
+  console.log("remainingSeconds: ", remainingSeconds);
   const totalMinutes = (seconds - remainingSeconds) / 60;
+  console.log("totalMinutes: ", totalMinutes);
   const remainingMinutes = totalMinutes % 60;
+  console.log("remainingMinutes: ", remainingMinutes);
   const totalHours = (totalMinutes - remainingMinutes) / 60;
+  console.log("totalHours: ", totalHours);
+
 
   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
+// Pad is being called 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
+// 0
 
 // c) What is the return value of pad when it is called for the first time?
 // =============> 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
+// 1, The value given is the remainder after being used in remainingMinutes section of the code
 
 // 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
+// 01, after going through pad it ensures that there is two 00 if there is no value left, with just 1 it adds one 0 to the front of 1.