difficulty with the middle part

Author: dwyci

arrays/package-lock.json

@@ -5,43 +5,48 @@ let protoArray4 = "Comma-spaces, might, require, typing, caution";
 
 strings = [protoArray1, protoArray2, protoArray3, protoArray4];
 
+
+
 //2) 
 function reverseCommas() {
 	//TODO: 1. create and instantiate your variables.
-	let check;
-	let output;
+	let check = protoArray1.split(',');
+	let output = '';
 	//TODO: 2. write the code required for this step
+	output = protoArray1.reverse().join();
+
 
 	//NOTE: For the code to run properly, you must return your output.  this needs to be the final line of code within the function's { }.
 	return output;
 }
 
 //3)
 function semiDash() {
-	let check;
-	let output;
+	let check =protoArray2.split(';');
+	let output = '';
 //TODO: write the code required for this step
+output = check.sort().join('-');
 
 
 	return output;
 }
 
 //4)
 function reverseSpaces() {
-	let check;
-	let output;
+	let check = protoArray3.split(' ');
+	let output = '';
   //TODO: write the code required for this step
 
-	return output;
+	return output = check.sort.reverse().join(' ');
 }
 
 //5)
 function commaSpace() {
-	let check;
-	let output;
+	let check = protoArray4.split(, );
+	let output = '';
 	//TODO: write the code required for this step
 
-	return output;
+	return output = check.sort.reverse.join(",");
 }
 
 // NOTE: Don't add or modify any code below this line or your program might not run as expected.