From d654806eae5dc6027911424ea828e566a64641fd Mon Sep 17 00:00:00 2001
From: Maxim Smolskiy <mithridatus@mail.ru>
Date: Wed, 6 Oct 2021 17:11:50 +0300
Subject: [PATCH] Improve Project Euler problem 112 solution 1 (#4808)

---
 project_euler/problem_112/sol1.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/project_euler/problem_112/sol1.py b/project_euler/problem_112/sol1.py
index d8cb334c9..b3ea6b356 100644
--- a/project_euler/problem_112/sol1.py
+++ b/project_euler/problem_112/sol1.py
@@ -47,7 +47,9 @@ def check_bouncy(n: int) -> bool:
     """
     if not isinstance(n, int):
         raise ValueError("check_bouncy() accepts only integer arguments")
-    return "".join(sorted(str(n))) != str(n) and "".join(sorted(str(n)))[::-1] != str(n)
+    str_n = str(n)
+    sorted_str_n = "".join(sorted(str_n))
+    return sorted_str_n != str_n and sorted_str_n[::-1] != str_n
 
 
 def solution(percent: float = 99) -> int: