From ed18b5cb4c4cd3b9744ffeaf62b75aa88eef607a Mon Sep 17 00:00:00 2001
From: def <8384198-dettlaff@users.noreply.gitlab.com>
Date: Sun, 5 Dec 2021 23:25:07 +0000
Subject: [PATCH] Add new file

---
 def/count | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 def/count

diff --git a/def/count b/def/count
new file mode 100644
index 0000000..45f9b91
--- /dev/null
+++ b/def/count
@@ -0,0 +1,23 @@
+##################################### Первый способ:
+
+A = [10, 10, 23, 10, 123, 66, 78, 123]
+counter = {}
+
+for elem in A:
+    counter[elem] = counter.get(elem, 0) + 1
+
+doubles = {element: count for element, count in counter.items() if count > 1}
+
+print(doubles)
+
+##################################### Второй способ:
+
+from collections import Counter
+counter = Counter(A)
+
+##################################### Третий способ:
+
+from collections import defaultdict
+counter = defaultdict(int)
+for elem in A:
+    counter[elem] += 1