From ace597085dd73614c2a4790794abc0a4a350e59a Mon Sep 17 00:00:00 2001
From: Buzz-HIT <302840154@qq.com>
Date: Thu, 13 Nov 2025 11:45:26 +0800
Subject: [PATCH] =?UTF-8?q?=E6=9B=B4=E6=94=B90115.=E7=BF=BB=E8=BD=AC?=
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python语言版本中版本四第19行（整体markdown491行）：应该先判断fast < len(s)再判断s[fast] != " "，否则提交后会出现数组越界错误
---
 ...\270\262\351\207\214\347\232\204\345\215\225\350\257\215.md" | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git "a/problems/0151.\347\277\273\350\275\254\345\255\227\347\254\246\344\270\262\351\207\214\347\232\204\345\215\225\350\257\215.md" "b/problems/0151.\347\277\273\350\275\254\345\255\227\347\254\246\344\270\262\351\207\214\347\232\204\345\215\225\350\257\215.md"
index b5246a7dbb..a5aabb96a5 100755
--- "a/problems/0151.\347\277\273\350\275\254\345\255\227\347\254\246\344\270\262\351\207\214\347\232\204\345\215\225\350\257\215.md"
+++ "b/problems/0151.\347\277\273\350\275\254\345\255\227\347\254\246\344\270\262\351\207\214\347\232\204\345\215\225\350\257\215.md"
@@ -492,7 +492,7 @@ class Solution:
             if s[fast] != " ":
                 if len(result) != 0:
                     result += " "
-                while s[fast] != " " and fast < len(s):
+                while fast < len(s) and s[fast] != " ": # 交换顺序会出现数组越界
                     result += s[fast]
                     fast += 1
             else: