Complete 1-key-exercises

Author: jakr-s

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

@@ -4,3 +4,5 @@ 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 is reassigning the 'count' variable to it's initial value plus one

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

@@ -5,7 +5,8 @@ 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 = ``;
+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 +17,7 @@ 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 = ;
-const ext = ;
+const dir = filePath.slice(1, lastSlashIndex);
+const ext = base.split(".")[1];
 
-// https://www.google.com/search?q=slice+mdn
+// https://www.google.com/search?q=slice+mdn

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

@@ -7,3 +7,19 @@ const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
 // Try breaking down the expression and using documentation to explain what it means
 // 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
+
+// The num variable will evaluate to a random number between the minimum and maximum values
+
+// Math.random()
+// Random decimal number (0 - 1)
+
+// (maximum - minimum + 1)
+// The size of the range
+
+// Math.random() * (maximum - minimum + 1)
+// Random decimal (0 - 100)
+
+// Math.floor(...)
+// Rounds the result down to a whole number (0 - 99)
+
+// Adding minimum shifts the range up, so the final result is between the minimum and maximum (1 - 100 inclusive)