Test Formatter 1st commit

judge/views/tf_utils.py

@@ -0,0 +1,15 @@
+def get_char_kind(char):
+    return 1 if char.isdigit() else 2 if char.isalpha() else 3
+
+
+def natural_sorting_key(name):
+    result = []
+    last_kind = -1
+    for char in name:
+        curr_kind = get_char_kind(char)
+        if curr_kind != last_kind:
+            result.append("")
+        result[-1] += char
+        last_kind = curr_kind
+
+    return [x.zfill(16) if x.isdigit() else x for x in result]