diff --git a/docs/notes/Leetcode 题解 - 双指针.md b/docs/notes/Leetcode 题解 - 双指针.md
index 471cc0bd..6488aa95 100644
--- a/docs/notes/Leetcode 题解 - 双指针.md
+++ b/docs/notes/Leetcode 题解 - 双指针.md
@@ -111,7 +111,7 @@ Given s = "leetcode", return "leotcede".
- 时间复杂度为 O(N):只需要遍历所有元素一次
- 空间复杂度 O(1):只需要使用两个额外变量
-
+
```java
private final static HashSet vowels = new HashSet<>(
diff --git a/docs/pics/ef25ff7c-0f63-420d-8b30-eafbeea35d11.gif b/docs/pics/ef25ff7c-0f63-420d-8b30-eafbeea35d11.gif
new file mode 100644
index 00000000..ee7c43a1
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diff --git a/notes/Leetcode 题解 - 双指针.md b/notes/Leetcode 题解 - 双指针.md
index 2b433bc4..aa08f977 100644
--- a/notes/Leetcode 题解 - 双指针.md
+++ b/notes/Leetcode 题解 - 双指针.md
@@ -111,7 +111,7 @@ Given s = "leetcode", return "leotcede".
- 时间复杂度为 O(N):只需要遍历所有元素一次
- 空间复杂度 O(1):只需要使用两个额外变量
-
+
```java
private final static HashSet vowels = new HashSet<>(
diff --git a/notes/pics/ef25ff7c-0f63-420d-8b30-eafbeea35d11.gif b/notes/pics/ef25ff7c-0f63-420d-8b30-eafbeea35d11.gif
new file mode 100644
index 00000000..ee7c43a1
Binary files /dev/null and b/notes/pics/ef25ff7c-0f63-420d-8b30-eafbeea35d11.gif differ