Reimplemented search based on description

Author: jrg94

challenges/how-to-check-if-a-string-contains-a-substring/check-substring.py

@@ -0,0 +1,8 @@
+def search(addresses: list, street_number: str, street_name: str) -> list:
+    number_matches = set()
+    name_matches = set()
+    for address in addresses:
+        if not street_number or street_number in address: number_matches.add(address)
+        if not street_name or street_name in address: name_matches.add(address)
+    intersection = number_matches & name_matches
+    return list(intersection)