1 files changed, 33 insertions, 0 deletions
diff --git a/challenge-067/lubos-kolouch/python/ch-2.py b/challenge-067/lubos-kolouch/python/ch-2.py
new file mode 100644
index 0000000000..31be7b2047
--- /dev/null
+++ b/challenge-067/lubos-kolouch/python/ch-2.py
@@ -0,0 +1,33 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+from typing import List
+
+
+def letter_combinations(s: str) -> List[str]:
+    phone = {
+        '2': ['a', 'b', 'c'],
+        '3': ['d', 'e', 'f'],
+        '4': ['g', 'h', 'i'],
+        '5': ['j', 'k', 'l'],
+        '6': ['m', 'n', 'o'],
+        '7': ['p', 'q', 'r', 's'],
+        '8': ['t', 'u', 'v'],
+        '9': ['w', 'x', 'y', 'z'],
+    }
+
+    result = ['']
+
+    for digit in s:
+        new_result = []
+        for res in result:
+            for letter in phone[digit]:
+                new_result.append(res + letter)
+        result = new_result
+
+    return result
+
+
+s = '35'
+combinations_list = letter_combinations(s)
+print("[", ", ".join(f'"{comb}"' for comb in combinations_list), "]")