rebased sprint 1 solution

Author: Ofonimeedak

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

@@ -4,5 +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 of the code assigns a value to the declared variable count.
-// The = sign is an assignment operator, without line 3, the declared variable wil be undefined.
+// Line 1 is increasing the count, it is called increment in programming

Sprint-1/1-key-exercises/2-initials.js

@@ -5,6 +5,6 @@ let lastName = "Johnson";
 // Declare a variable called initials that stores the first character of each string.
 // This should produce the string "CKJ", but you must not write the characters C, K, or J in the code of your solution.
 
-let initials = `${firstName[0]}+${middleName}+${lastName}`;
-
+let initials = `${firstName[0]}${middleName[0]}${lastName[0]}`;
+console.log(initials); //CJK
 // https://www.google.com/search?q=get+first+character+of+string+mdn

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

@@ -17,7 +17,10 @@ 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(0,filePath.length-base.length-1) ;
-const ext = filePath.slice(-3);
+const lastDotIndex = filePath.lastIndexOf(".");
+const dir = filePath.slice(0, lastSlashIndex);
+const ext = filePath.slice(lastDotIndex + 1);
+console.log(dir);
+console.log(ext);
 
 // https://www.google.com/search?q=slice+mdn

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

@@ -8,11 +8,11 @@ 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
 
-// In the above expression num represent a variable that will store the result of that will be obtained from from the expression.
+//In the above expression num represent a variable that will store the result of that will be obtained from from the expression.
 // maximum and minimum are variables available on the global scope, as inputs.
 // They are evaluated first because of the parenthesis, this gives the precedence
 // The output from the parenthesis is now going to serve as the range for the Math.random() method.
 // Math.random() method produce random values from 0-1, with 0 and 1 inclusive and exclusive respectively
 // The range value makes Math.random() to return result from 0 to  range-1
-//the Math.floor() methods rounds down the value to the nearest whole number.
-// The result from th random operation is added back to the minimum value to return num.
+// the Math.floor() methods rounds down the value to the nearest whole number.
+// The result from th random operation is added back to the minimum value to return num.

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

@@ -1,8 +1,9 @@
 // Currently trying to print the string "I was born in Bolton" but it isn't working...
-
-// JavaScript is single-threaded because it executes tasks in a single flow using a call stack. The function was called before it was declared,
+// what's the error ?
+// JavaScript is single-threaded because it executes tasks in a single flow using a call stack. The function was called before it was declared, 
 // It was also declared with const, which can not be hoisted to the top, like var.
 // this result to undefined.
 
+console.log(`I was born in ${cityOfBirth}`);
 const cityOfBirth = "Bolton";
 console.log(`I was born in ${cityOfBirth}`);

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

@@ -1,5 +1,5 @@
 let cardNumber = 4533787178994213;
-cardNumber=cardNumber.toString();
+cardNumber = cardNumber.toString();
 const last4Digits = cardNumber.slice(-4);
 
 // The last4Digits variable should store the last 4 digits of cardNumber
@@ -9,6 +9,11 @@ const last4Digits = cardNumber.slice(-4);
 // Consider: Why does it give this error? Is this what I predicted? If not, what's different?
 // Then try updating the expression last4Digits is assigned to, in order to get the correct value
 
+// The last4Digits variable should store the last 4 digits of cardNumber
+// Then run the code and see what error it gives.
+// Consider: Why does it give this error? Is this what I predicted? If not, what's different?
+// Then try updating the expression last4Digits is assigned to, in order to get the correct value
+
 // The variable cardNumber is a number data type, numbers do not have slice methods or function, only string does.
 //TypeError: cardNumber.slice is not a function
-// Yes, it gives what i predicted
+// Yes, it gives what i predicted

Sprint-1/2-mandatory-errors/4.js

@@ -1,2 +1,2 @@
 const twelveHourClockTime = "20:53";
-const twentyFourHourClockTime = "08:53";
+const twentyFourHourClockTime = "08:53";

Sprint-1/3-mandatory-interpret/1-percentage-change.js

@@ -19,16 +19,14 @@ console.log(`The percentage change is ${percentageChange}`);
 // 3. line 10 console.log() that logs the result to the console
 
 // b) Run the code and identify the line where the error is coming from - why is this error occurring? How can you fix this problem?
-// The error in this code is coming from line 5. The wrong use of the
-// replaceAll method without a comma between the pattern and replacement in the function  argument.
+// The error in this code is coming from line 5. The wrong use of the replaceAll syntax without a separator in the function arguments.
 // I will fix this problem by reading the documentation, to see the right way the syntax should be written.
 //Then i will add the comma where necessary
-
 // c) Identify all the lines that are variable reassignment statements
-// line 4 and 5 are variable reassignment
+ // line 4 and 5 are variable reassignment
 
 // d) Identify all the lines that are variable declarations
-// line 1,2,7,8 are all variable declaration
+ // line 1,2,7,8 are all variable declaration
 
 // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
-// this expression replaces the comma at the string with an empty string and the convert the string data type to a number data type
+// this expression replaces the comma at the string with an empty string and the convert the string data type to a number data type

Sprint-1/3-mandatory-interpret/2-time-format.js

@@ -10,10 +10,10 @@ const result = `${totalHours}:${remainingMinutes}:${remainingSeconds}`;
 console.log(result);
 
 // For the piece of code above, read the code and then answer the following questions
-
 // a) How many variable declarations are there in this program?
 // there are 6 variable declaration.
 
+
 // b) How many function calls are there?
 // One function call
 
@@ -28,8 +28,7 @@ console.log(result);
 
 // e) What do you think the variable result represents? Can you think of a better name for this variable?
 // the variable result represent total movie duration in hours,minute and seconds.
-// const=movieDuration
-
+// const=runningTime
 // f) Try experimenting with different values of movieLength. Will this code work for all values of movieLength? Explain your answer
-// this code works for all movie length and integer values.
-// for movie length which are multiples of 60 it returns hours with 0 minutes and 0 seconds
+// this code works for all movie running time and integer values.
+// for movie running time which are multiples of 60 it returns hours with 0 minutes and 0 seconds

Sprint-1/3-mandatory-interpret/3-to-pounds.js

@@ -6,9 +6,14 @@ const penceStringWithoutTrailingP = penceString.substring(
 );
 
 const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0");
-const pounds = paddedPenceNumberString.substring(0,paddedPenceNumberString.length - 2);
+const pounds = paddedPenceNumberString.substring(
+  0,
+  paddedPenceNumberString.length - 2
+);
 
-const pence = paddedPenceNumberString .substring(paddedPenceNumberString.length - 2).padEnd(2, "0");
+const pence = paddedPenceNumberString
+  .substring(paddedPenceNumberString.length - 2)
+  .padEnd(2, "0");
 
 console.log(`£${pounds}.${pence}`);
 
@@ -27,5 +32,4 @@ console.log(`£${pounds}.${pence}`);
 // from every length character of the padded string
 // 5.const pence = paddedPenceNumberString .substring(paddedPenceNumberString.length - 2).padEnd(2, "0");: This expression add '0' to the end if the paddedString is not 
 // upto 2 characters
-// 6.  this line is a function call to log the argument inside it to the console. it use template literals to get the values of the variables
-
+// // 6.  this line is a function call to log the argument inside it to the console. it use template literals to get the values of the variables