Manchester | 25-ITP-Sep | Hani Sadah| Sprint 1 | Coursework/sprint 1

Sprint-1/1-key-exercises/1-count.js

@@ -4,4 +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
-// line 3 returns the incurmented value of count after adding 1 to it and assigns this new value back to count
+// line 3 is an assignment which returns the incurmented value of count after adding 1 to it.

Sprint-1/1-key-exercises/3-paths.js

@@ -11,14 +11,14 @@
 
 const filePath = "/Users/mitch/cyf/Module-JS1/week-1/interpret/file.txt";
 const lastSlashIndex = filePath.lastIndexOf("/");
-const base = filePath.slice(lastSlashIndex + 1);
-console.log (the base part of ${filePath} is ${base});
+const base = filePath.slice(lastSlashIndex + 1); // file.txt
+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(lastSlashIndex+1)
-const ext = filePath.slice(lastDotIndexOf(".") +1);   
+const dir = filePath.slice(0, lastSlashIndex)
+const ext = filePath.slice(filePath.lastIndexOf("."));   
 
-console.log (dir)
+console.log (dir, ext)
 // https://www.google.com/search?q=slice+mdn

Sprint-1/1-key-exercises/4-random.js

@@ -8,17 +8,14 @@ const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
 // 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 represents the results of equations at the right side of operator =
+
+//step-1---> Math.random() generates a random decimal.
+//step-2---> (maximum - minimum + 1) evaluates to 100.
+//step-3---> Math.random() is multiplied by (maximum - minimum + 1) which is 100, resulting in a random decimal between 0 and 100.
+//step-4---> the result of Step-3 is round by the method Math.floor.
+//step-5---> minimum is added to the result of step-4.
+//Therefore, num represents random numbers generated between minimum 1 and maximum 100, as we run the code several times
+//generates new numbers.
 
 console.log(num);

Sprint-2/1-key-errors/0.js

@@ -1,23 +1,13 @@
 // Predict and explain first...
-//  =============> I predict that we will not need to write let in line 8 as str is already declared
-// as an argument within the function captialise.
+//  =============> write your prediction here
 
 // 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;
-// }
-
-// capitalise ('hello');
-//==============> A syntaxError occurred as 'str' is being cleared.
-
-
 function capitalise(str) {
-  str = `${str[0].toUpperCase()}${str.slice(1)}`;
+  let str = `${str[0].toUpperCase()}${str.slice(1)}`;
   return str;
 }
-console.log (capitalise ('hello'));
-
 
+// =============> write your explanation here
+// =============> write your new code here

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

@@ -1,32 +1,20 @@
 // Predict and explain first...
 
 // Why will an error occur when this program runs?
-// =============> I believe that the function convertToPercentage is not mentioned in the console.log statement.
-// Declaring the const decimalNumber is unnecessary as it is already declared as a parameter within the function convertToPercentage.
+// =============> write your prediction here
 
 // Try playing computer with the example to work out what is going on
 
-// function convertToPercentage(decimalNumber) {
-  // const decimalNumber = 0.5;
-  // const percentage = `${decimalNumber * 100}%`;
-
-  // return percentage;
-//}
-
-// console.log(decimalNumber);
-
-// =============> A syntaxError occurred saying decimalNumber is already declared.
-
-// Finally, correct the code to fix the problem
-// =============> write your new code here
-
-function convertToPercentage() {
+function convertToPercentage(decimalNumber) {
   const decimalNumber = 0.5;
   const percentage = `${decimalNumber * 100}%`;
 
   return percentage;
 }
 
-console.log(convertToPercentage());
+console.log(decimalNumber);
+
+// =============> write your explanation here
 
-// the new code runs without error and outputs "50%"
+// Finally, correct the code to fix the problem
+// =============> write your new code here

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

@@ -3,25 +3,18 @@
 
 // this function should square any number but instead we're going to get an error
 
-// =============> The num parameter should be mentioned inside the function square instead of the number 3.
-// then it should be called as square (3) in the console.log statement.
+// =============> write your prediction of the error here
 
-//function square(3) {
-//return num * num;
-//}
-
-// =============> function square(3) syntaxError: Unexpected number.
-// =============> 3 wasn't expected... instead a declaration like 'num' was expected.
+function square(3) {
+    return num * num;
+}
 
+// =============> write the error message here
 
+// =============> explain this error message here
 
 // Finally, correct the code to fix the problem
 
 // =============> write your new code here
-function square(num) {
-  return num * num;
-}
-
-console.log(square(3));
 
 

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

@@ -1,20 +1,14 @@
 // Predict and explain first...
 
-// =============> In line 6, instead of console.log printing the result of multiply(10, 32), return a*b would be better
-//because the console.log would only print a*b.
+// =============> write your prediction here
 
-//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)}`);
 
-// =============> After running the code, we got 'the result of multiplying 10 and 32 is undefined'
-// as the multiply parameters weren't considered as parameters inside the function multiply.
+// =============> write your explanation here
 
 // Finally, correct the code to fix the problem
 //  =============> write your new code here
-function multiply(a, b) {
-  return a * b; 
-}
-console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);

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

@@ -1,13 +1,13 @@
 // Predict and explain first...
-//  =============> SyntaxError will occur due to putting a semicolon after return.
+//  =============> write your prediction here
 
 function sum(a, b) {
-  return a + b;
+  return;
+  a + b;
 }
 
 console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
 
-// =============> unlike the expectation that the code runs without error as 'the sum of 10 and 32 is undefined'.
+// =============> write your explanation here
 // Finally, correct the code to fix the problem
 //  =============> write your new code here
-// we needed just to remove the semicolon after return statement and to bring up the a+b expression side by side with return.

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

@@ -1,34 +1,24 @@
 // Predict and explain first...
 
 // Predict the output of the following code:
-// =============> The code will return 3 as a string first, but after calling the getLastDigit function,
-// it will not return anything because every number based will be converted to string.
+// =============> Write your prediction here
 
-//const num = 103;
+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
-// =============> The last digit of 42 is 3 three times.
-// the prediction was close but not accurate, the case is that the parameter num needs to be 
-//the function instead of const num = 103.
-// =============> 
-// Finally, correct the code to fix the problem
-// =============> write your new code here
-
-function getLastDigit(num) {
+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
+// Explain why the output is the way it is
+// =============> write your explanation here
+// Finally, correct the code to fix the problem
+// =============> write your new code here
+
 // This program should tell the user the last digit of each number.
 // Explain why getLastDigit is not working properly - correct the problem
-// parameter num needs to be with the getLastDigit function instead of const num=103.

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

@@ -15,8 +15,5 @@
 // It should return their Body Mass Index to 1 decimal place
 
 function calculateBMI(weight, height) {
-    const bmi = weight / (weight*height);
-    return bmi.toFixed(1);
     // return the BMI of someone based off their weight and height
-}
-console.log("the BMI is", calculateBMI(70, 1.73));
+}

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

@@ -14,15 +14,3 @@
 // 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 capSnakeCase(str) {
-    const upper = str.toUpperCase();
-    const snake = upper.replace(/ /g, "_");
-    return snake;
-}
-console.log(capSnakeCase("lord of the rings"));
-
-// step 1: get a string input
-//step 2: change the upper case
-//step 3: replace spaces with underscores
-// step 4: return capSnakeCase

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

@@ -4,15 +4,3 @@
 // 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}`;
-}
-console.log(toPounds("399p"))
-console.log(toPounds("5p"))
-console.log(toPounds("5678p"))

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

@@ -10,25 +10,25 @@ function formatTimeDisplay(seconds) {
 
   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?
-// =============> It will be called 3 times.
+// =============> write your answer here
 
 // 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?
-// =============> 0
+// =============> write your answer here
 
 // c) What is the return value of pad is called for the first time?
-// =============> 00
+// =============> write your answer here
 
 // d) What is the value assigned to num when pad is called for the last time in this program?  Explain your answer
-// =============> The leftover second is assigned to num as remainingSEconds 61%60
+// =============> write your answer here
 
 // e) What is the return value assigned to num when pad is called for the last time in this program?  Explain your answer
-// =============> 01 the remainingSeconds from passed from pad to num is changed to string and padded as 01
+// =============> write your answer here

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

@@ -23,58 +23,3 @@ console.assert(
   currentOutput2 === targetOutput2,
   `current output: ${currentOutput2}, target output: ${targetOutput2}`
 );
-
-const currentOutput3 = formatAs12HourClock("00:00");
-const targetOutput3 = "12:00 am";
-console.assert(
-  currentOutput3 === targetOutput3,
-  `current output: ${currentOutput3}, target output: ${targetOutput3}`
-);
-
-const currentOutput4 = formatAs12HourClock("12:00");
-const targetOutput4 = "12:00 pm";
-console.assert(
-  currentOutput4 === targetOutput4,
-  `current output: ${currentOutput4}, target output: ${targetOutput4}`
-);
-
-const currentOutput5 = formatAs12HourClock("13:00");
-const targetOutput5 = "1:00 pm";
-console.assert(
-  currentOutput5 === targetOutput5,
-  `current output: ${currentOutput5}, target output: ${targetOutput5}`
-);
-
-const currentOutput7 = formatAs12HourClock("25:00");
-const targetOutput7 = "01:00 am";
-console.assert(
-  currentOutput7 === targetOutput7,
-  `current output: ${currentOutput7}, target output: ${targetOutput7}`
-);
-
-// modified code:
-
-function formatAs12HourClock(time) {
-  let hours = Number(time.slice(0, 2));
-  const minutes = time.slice(3);
-
-  let suffix;
-  if (hours >= 12) {
-    suffix = "pm";
-
-  } else {
-    suffix = "am";
-  }
-  hours = hours % 12 || 12; // Convert 0 to 12, 13 to 1
-  const formattedHours = hours.toString().padStart(2, '0');
-
-  return `${formattedHours}:${minutes} ${suffix}`;
-}
-
-const currentOutput6 = formatAs12HourClock("23:00");
-const targetOutput6 = "11:00 pm";
-console.assert(
-  currentOutput6 === targetOutput6,
-  `current output: ${currentOutput6}, target output: ${targetOutput6}`
-);
-