Manchester | 26-ITP-May | Joanne O’Malley | Sprint 2 | Coursework

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

@@ -10,4 +10,14 @@ function capitalise(str) {
 }
 
 // =============> write your explanation here
+
+// Your need to delete "let ".  That's just for making a new variables.  You want assignment.
+
 // =============> write your new code here
+
+function capitalise(str) {
+  str = `${str[0].toUpperCase()}${str.slice(1)}`;
+  return str;
+}
+
+console.log(capitalise("hello"));

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

@@ -16,5 +16,14 @@ console.log(decimalNumber);
 
 // =============> write your explanation here
 
+// You need to pass the value in, not declare it within the function.  The syntax is wrong.
+
 // 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-2/1-key-errors/2.js

@@ -5,16 +5,26 @@
 
 // =============> write your prediction of the error here
 
+// num is not defined
+
 function square(3) {
     return num * num;
 }
 
 // =============> write the error message here
 
+// SyntaxError: Unexpected token (1:16)
+
 // =============> explain this error message here
 
+// You can't feed the value in there.  You need to call it from outside the function.  JS thinks it's a variable name which isn't allowed to 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(2))

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

@@ -2,6 +2,8 @@
 
 // =============> write your prediction here
 
+// The result of multiplying 10 and 32 is undefined
+
 function multiply(a, b) {
   console.log(a * b);
 }
@@ -10,5 +12,13 @@ console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);
 
 // =============> write your explanation here
 
+// Nothing is returned in the function but rather logged to the console
+
 // 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

@@ -1,6 +1,8 @@
 // Predict and explain first...
 //  =============> write your prediction here
 
+// It returns blank since it doesn't know what it's returning
+
 function sum(a, b) {
   return;
   a + b;
@@ -9,5 +11,14 @@ function sum(a, b) {
 console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);
 
 // =============> write your explanation here
+
+  return a + b is supposed to be on one line.  "return;" just returns nothing
+
 // Finally, correct the code to fix the problem
 //  =============> write your new code here
+
+function sum(a, b) {
+  return a + b;
+}
+
+console.log(`The sum of 10 and 32 is ${sum(10, 32)}`);

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

@@ -3,6 +3,8 @@
 // Predict the output of the following code:
 // =============> Write your prediction here
 
+// It's putting the answer to everything as 3, the last digit of the contant.
+
 const num = 103;
 
 function getLastDigit() {
@@ -15,10 +17,20 @@ 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
+
+// My prediction was correct.
+
 // Explain why the output is the way it is
 // =============> write your explanation here
+
+// function getLastDigit() should have "theNumber" or something in its brackets.  It's getting the last digit of the constant as the answer to everything at the moment.
+
 // Finally, correct the code to fix the problem
 // =============> write your new code here
 
+function getLastDigit(num) {
+  return num.toString().slice(-1);
+}
+
 // This program should tell the user the last digit of each number.
 // Explain why getLastDigit is not working properly - correct the problem

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

@@ -1,19 +1,36 @@
-// Below are the steps for how BMI is calculated
+// In Sprint-1, there is a program written in interpret/to-pounds.js
 
-// The BMI calculation divides an adult's weight in kilograms (kg) by their height in metres (m) squared.
+// 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.
 
-// For example, if you weigh 70kg (around 11 stone) and are 1.73m (around 5 feet 8 inches) tall, you work out your BMI by:
+// You should call this function a number of times to check it works for different inputs
 
-// squaring your height: 1.73 x 1.73 = 2.99
-// dividing 70 by 2.99 = 23.41
-// Your result will be displayed to 1 decimal place, for example 23.4.
+function calculateBMI(penceString) {  
 
-// You will need to implement a function that calculates the BMI of someone based off their weight and height
+  // remove last character
+  const penceStringWithoutTrailingP = penceString.substring(
+    0,
+    penceString.length - 1
+  );
 
-// Given someone's weight in kg and height in metres
-// Then when we call this function with the weight and height
-// It should return their Body Mass Index to 1 decimal place
+  // pad to the length of three
+  const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0");
 
-function calculateBMI(weight, height) {
-    // return the BMI of someone based off their weight and height
-}
+  // remove the last two characters
+  const pounds = paddedPenceNumberString.substring(
+    0,
+    paddedPenceNumberString.length - 2
+  );
+
+  // get last two characters and pad to two if needed
+  const pence = paddedPenceNumberString
+    .substring(paddedPenceNumberString.length - 2)
+    .padEnd(2, "0");
+
+  console.log(`£${pounds}.${pence}`);
+
+}
+
+console.log(calculateBMI("456p"))
+console.log(calculateBMI("545747p"))
+console.log(calculateBMI("1p"))

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 snakeCase(toConvert) {
+  return toConvert.replace(" ", "_").toUpperCase();
+}
+
+console.log(snakeCase("hello there"));

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

@@ -4,3 +4,33 @@
 // 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 calculateBMI(penceString) {  
+
+  // remove last character
+  const penceStringWithoutTrailingP = penceString.substring(
+    0,
+    penceString.length - 1
+  );
+
+  // pad to the length of three
+  const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0");
+
+  // remove the last two characters
+  const pounds = paddedPenceNumberString.substring(
+    0,
+    paddedPenceNumberString.length - 2
+  );
+
+  // get last two characters and pad to two if needed
+  const pence = paddedPenceNumberString
+    .substring(paddedPenceNumberString.length - 2)
+    .padEnd(2, "0");
+
+  console.log(`£${pounds}.${pence}`);
+
+}
+
+console.log(calculateBMI("456p"))
+console.log(calculateBMI("545747p"))
+console.log(calculateBMI("1p"))

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

@@ -21,18 +21,18 @@ function formatTimeDisplay(seconds) {
 // Questions
 
 // a) When formatTimeDisplay is called how many times will pad be called?
-// =============> write your answer here
+// =============> 3
 
 // 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 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 - Remaining seconds is calculated first with %60 and 1 is what's left over.
 
 // 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" - now it's padded to 2 digits