src/codewars/counting_duplicates.py

@@ -0,0 +1,14 @@
+# Abgabe - Counting Duplicates Aufgabe von Codewars
+# Link dazu: https://www.codewars.com/kata/54bf1c2cd5b56cc47f0007a1
+# Leart Ramushi
+
+
+def duplicate_count(text):
+    lower_text = text.lower()
+    letter_set = set()
+
+    for i in range(len(lower_text)):
+        if lower_text.count(lower_text[i]) > 1:
+            letter_set.add(lower_text[i])
+
+    return len(letter_set)