Answer all questions about the find while loop in find.js

Author: KhotKeys

Sprint-3/4-stretch/find.js

@@ -19,7 +19,17 @@ console.log(find("code your future", "z"));
 // Use the Python Visualiser to help you play computer with this example and observe how this code is executed
 // Pay particular attention to the following:
 
-// a) How the index variable updates during the call to find
-// b) What is the if statement used to check
-// c) Why is index++ being used?
-// d) What is the condition index < str.length used for?
+// a) index starts at 0 and increments by 1 on each iteration until either the target
+//    character is found (returns early) or index reaches str.length (loop ends).
+//    For find("code your future", "u"): index goes 0,1,2,3,4,5,6,7 — "u" found at index 7.
+//    For find("code your future", "z"): index goes 0..15, never matches, returns -1.
+
+// b) The if statement checks whether the character at the current index equals the
+//    target character `char`. If it does, the function returns that index immediately.
+
+// c) index++ increments the index by 1 after each iteration so the loop moves forward
+//    through the string one character at a time, preventing an infinite loop.
+
+// d) index < str.length is the loop condition. It ensures the loop only runs while
+//    index is within the valid range of the string. Once index equals str.length
+//    there are no more characters to check, so the loop stops and -1 is returned.