made amendments following PR review

Author: i786m

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

@@ -5,8 +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.charAt(0) + middleName.charAt(0) + lastName.charAt(0)
-}`;
+let initials = firstName.charAt(0) + middleName.charAt(0) + lastName.charAt(0);
 
 // https://www.google.com/search?q=get+first+character+of+string+mdn

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

@@ -17,7 +17,8 @@ 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(1, lastSlashIndex);
+const dir = filePath.slice(0, lastSlashIndex);
 const ext = base.split(".").pop();
 
+
 // https://www.google.com/search?q=slice+mdn

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

@@ -15,7 +15,7 @@
 
 // Then try updating the expression last4Digits is assigned to, in order to get the correct value
 // by concatenating an empty string the code works as expected
-const cardNumber = "" + 4533787178994213;
+const cardNumber = (4533787178994213).toString();
 const last4Digits = cardNumber.slice(-4);
 console.log(last4Digits); // should log '4213'
 

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

@@ -34,4 +34,4 @@ console.log(result);
 
 // f) Try experimenting with different values of movieLength. Will this code work for all values of movieLength? Explain your answer
 
-// Yes the code will work for all values of movieLength, because the use of a variable makes it so that the code can be reused for any value of movieLength
+// No it will not work for all values. In the case of negative values it will result in a negative time which isn't valid. Also there are certain cases where the remaining minutes or seconds are less than 10, which will make the format look weird e.g 0:3:3 which isn't the standard representation of time. This can be fixed by using the padStart method ensuring there are always 2 digits for hours, minutes and seconds. Additionally if the length passes 24 hours we would need to account for days in the format as that would be more appropriate.