remove duplicates from array

Author: rohan-paul

Hash_Table/remove_duplicates_from_array_returning_only_unique_elements.js

@@ -0,0 +1,17 @@
+/* Implement a function to remove duplicates from an array and returning an array of only unique elements */
+
+function uniqueArray(arr) {
+  var hashMap = {};
+  var uniqueArr = [];
+
+  for (var i = 0; i < arr.length; i++) {
+    if (!hashMap.hasOwnProperty(arr[i])) {
+      uniqueArr.push(arr[i]);
+    }
+  }
+  return uniqueArr;
+}
+
+// test cases
+var myArray = [1, 2, 3, 5, 1, 5, 9, 1, 2, 8];
+console.log(uniqueArray(myArray));