diff --git a/u3/flatten_array.py b/u3/flatten_array.py
new file mode 100644
index 0000000..833c230
--- /dev/null
+++ b/u3/flatten_array.py
@@ -0,0 +1,13 @@
+def flatten(inputs):
+    result = []
+    for item in inputs:
+        if isinstance(item, list):
+            for sub in flatten(item):
+                result.append(sub)
+        else:
+            if item is not None:
+    return result
+
+
+
+