diff --git a/index.js b/index.js
index 695b9e1..33be0f2 100644
--- a/index.js
+++ b/index.js
@@ -1 +1,50 @@
-const app = "I don't do much."
+const app = "I don't do much.";
+var kittens = ['Milo', 'Otis', 'Garfield'];
+
+function destructivelyAppendKitten(name) {
+// appends a kitten to the end of the kittens array
+  kittens.push(name); 
+  return kittens;
+}
+
+function destructivelyPrependKitten(name) {
+// prepends a kitten to the beginning of the kittens array
+  kittens.unshift(name);   
+  return kittens;
+}
+
+function destructivelyRemoveLastKitten() {
+// removes the last kitten from the kittens array
+  kittens.pop();
+  return kittens;
+}
+
+function destructivelyRemoveFirstKitten() {
+// removes the First kitten from the kittens array
+  kittens.shift();   
+  return kittens;
+}
+
+function appendKitten(name) {
+// appends a kitten to the kittens array and returns a new array
+  var newKittens = [...kittens, name];
+  return newKittens;  
+}
+
+function prependKitten(name) {
+// prepends a kitten to the kittensarray and returns a new array
+  var newKittens = [name, ...kittens];
+  return newKittens;  
+}
+
+function removeLastKitten() {
+// removes the last kitten in the kittens array and returns a new array
+  var newKittens = kittens.slice(0, kittens.length-1);
+  return newKittens;
+}
+
+function removeFirstKitten() {
+// removes the first kitten from the kittens array and returns a new array
+  var newKittens = kittens.slice(1); 
+  return newKittens;
+}