codejoncode
diff --git a/‎assignments/callbacks.js‎
Lines changed: 14 additions & 1 deletion b/‎assignments/callbacks.js‎
Lines changed: 14 additions & 1 deletion
@@ -2,27 +2,33 @@ const items = ['Pencil', 'Notebook', 'yo-yo', 'Gum'];
 
 function firstItem(arr, cb) {
   // firstItem passes the first item of the given array to the callback function.
+  return cb(arr[0]); 
 }
 
 function getLength(arr, cb) {
   // getLength passes the length of the array into the callback.
+  return cb(arr.length);
 }
 
 function last(arr, cb) {
   // last passes the last item of the array into the callback.
+  return cb(arr[arr.length-1]);
 }
 
 function sumNums(x, y, cb) {
   // sumNums adds two numbers (x, y) and passes the result to the callback.
+  return cb(x+y);
 }
 
 function multiplyNums(x, y, cb) {
   // multiplyNums multiplies two numbers and passes the result to the callback.
+  return cb(x*y);
 }
 
 function contains(item, list, cb) {
   // contains checks if an item is present inside of the given array/list.
   // Pass true to the callback if it is, otherwise pass false.
+  return cb(list.includes(item)); 
 }
 
 /* STRETCH PROBLEM */
@@ -31,4 +37,11 @@ function removeDuplicates(array, cb) {
   // removeDuplicates removes all duplicate values from the given array.
   // Pass the duplicate free array to the callback function.
   // Do not mutate the original array.
-}
+  const noDuplicates = []; 
+  for(num in array){
+      if (noDuplicates.includes(array[num]) === false){
+        noDuplicates.push(array[num]); 
+      } 
+  }
+  return cb(noDuplicates); 
+}