Iteration ironhack-labs#5 complete.

Author: KeithMcGowan

src/functions-and-arrays.js

@@ -108,7 +108,14 @@ const wordsUnique = [
   'bring'
 ];
 
-function uniquifyArray() {}
+function uniquifyArray(arr) {
+  if (arr.length === 0) {
+    return null;
+  } else {
+    let words = [...new Set(arr)];
+    return words;
+  }
+}