completed second exercise of key exercises

Author: TaliaKucuk

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

@@ -11,13 +11,14 @@
 
 const filePath = "/Users/mitch/cyf/Module-JS1/week-1/interpret/file.txt";
 const lastSlashIndex = filePath.lastIndexOf("/");
+const lastDotIndex = filePath.lastIndexOf(".");
 const base = filePath.slice(lastSlashIndex + 1);
 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 = filePath.slice(lastDotIndex);
 
 // https://www.google.com/search?q=slice+mdn