Created the function and used .includes

week-1/implement/dedupe.js

@@ -1 +1,9 @@
-function dedupe() {}
+function dedupe(arr) {
+    let newArr = [];
+    for (const item of arr){
+        if (!newArr.includes(item)) {
+            newArr.push(item);
+        }
+    }
+    return newArr;
+}