completed sprint key excercises

Author: Enice-Codes

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

@@ -2,5 +2,10 @@ let count = 0;
 
 count = count + 1;
 
-// Line 1 is a variable declaration, creating the count variable with an initial value of 0
+// Line 3 reassigns the value of count.
+// The expression on the right side (count + 1) is evaluated first using the current value of count.
+// The =  assignment operator then stores the result back into the count variable, replacing its previous value.
+
+
+// Line 1 is a variablbe declaration, creating the count variable with an initial value of 0
 // Describe what line 3 is doing, in particular focus on what = is doing

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

@@ -5,7 +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 = ``;
+let initials = `${firstName[0]}${middleName[0]}${lastName[0]}`;
 
 // https://www.google.com/search?q=get+first+character+of+string+mdn
-

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

@@ -1,6 +1,5 @@
 // The diagram below shows the different names for parts of a file path on a Unix operating system
 
-// ┌─────────────────────┬────────────┐
 // │          dir        │    base    │
 // ├──────┬              ├──────┬─────┤
 // │ root │              │ name │ ext │
@@ -17,7 +16,10 @@ 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 = ;
-const ext = ;
+const dir = filePath.slice (0,lastSlashIndex);
+const ext = base.slice(base.lastIndexOf(".") + 1);
 
-// https://www.google.com/search?q=slice+mdn
+// https://www.google.com/search?q=slice+mdn
+
+// dir = everything before the last /
+// ext = everything from the last . to the end of the string (.txt)ssss

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

@@ -5,5 +5,11 @@ const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
 
 // In this exercise, you will need to work out what num represents?
 // Try breaking down the expression and using documentation to explain what it means
+
+//num is a random number between 1 and 100 
+
+// Method.floor generates a random number between 0 and 1 to nearest interger (whole number)
+//Math.random generates a decimal number between 0 and 1 .
+
 // 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