diff --git a/video/0239.滑动窗口最大值.mp4 b/video/0239.滑动窗口最大值.mp4 new file mode 100644 index 00000000..3b984fb8 Binary files /dev/null and b/video/0239.滑动窗口最大值.mp4 differ diff --git a/video/102二叉树的层序遍历.mp4 b/video/102二叉树的层序遍历.mp4 new file mode 100644 index 00000000..f6f66bba Binary files /dev/null and b/video/102二叉树的层序遍历.mp4 differ diff --git a/video/1047.删除字符串中的所有相邻重复项.mp4 b/video/1047.删除字符串中的所有相邻重复项.mp4 new file mode 100644 index 00000000..b8512f24 Binary files /dev/null and b/video/1047.删除字符串中的所有相邻重复项.mp4 differ diff --git a/video/15.三数之和.gif b/video/15.三数之和.gif new file mode 100644 index 00000000..82e1eabc Binary files /dev/null and b/video/15.三数之和.gif differ diff --git a/video/15.三数之和.mp4 b/video/15.三数之和.mp4 new file mode 100644 index 00000000..29bef5fc Binary files /dev/null and b/video/15.三数之和.mp4 differ diff --git a/video/151翻转字符串里的单词.gif b/video/151翻转字符串里的单词.gif new file mode 100644 index 00000000..cd8a60fb Binary files /dev/null and b/video/151翻转字符串里的单词.gif differ diff --git a/video/20.有效括号.mp4 b/video/20.有效括号.mp4 new file mode 100644 index 00000000..84eab69f Binary files /dev/null and b/video/20.有效括号.mp4 differ diff --git a/video/206.翻转链表.gif b/video/206.翻转链表.gif new file mode 100644 index 00000000..ad2fdafd Binary files /dev/null and b/video/206.翻转链表.gif differ diff --git a/video/206.翻转链表.mp4 b/video/206.翻转链表.mp4 new file mode 100644 index 00000000..02d66ccb Binary files /dev/null and b/video/206.翻转链表.mp4 differ diff --git a/video/209.长度最小的子数组.gif b/video/209.长度最小的子数组.gif new file mode 100644 index 00000000..f120acc1 Binary files /dev/null and b/video/209.长度最小的子数组.gif differ diff --git a/video/209.长度最小的子数组.mp4 b/video/209.长度最小的子数组.mp4 new file mode 100644 index 00000000..df034f52 Binary files /dev/null and b/video/209.长度最小的子数组.mp4 differ diff --git a/video/209.长度最小的子数组(缩小版).gif b/video/209.长度最小的子数组(缩小版).gif new file mode 100644 index 00000000..f1c0b4cb Binary files /dev/null and b/video/209.长度最小的子数组(缩小版).gif differ diff --git a/video/225.用队列实现栈.mp4 b/video/225.用队列实现栈.mp4 new file mode 100644 index 00000000..9aa76c34 Binary files /dev/null and b/video/225.用队列实现栈.mp4 differ diff --git a/video/232.用栈实现队列.mp4 b/video/232.用栈实现队列.mp4 new file mode 100644 index 00000000..1ba21a36 Binary files /dev/null and b/video/232.用栈实现队列.mp4 differ diff --git a/video/232.用栈实现队列版本2.mp4 b/video/232.用栈实现队列版本2.mp4 new file mode 100644 index 00000000..32db272e Binary files /dev/null and b/video/232.用栈实现队列版本2.mp4 differ diff --git a/video/242.有效的字母异位词.gif b/video/242.有效的字母异位词.gif new file mode 100644 index 00000000..febc0bad Binary files /dev/null and b/video/242.有效的字母异位词.gif differ diff --git a/video/242.有效的字母异位词.mp4 b/video/242.有效的字母异位词.mp4 new file mode 100644 index 00000000..33504290 Binary files /dev/null and b/video/242.有效的字母异位词.mp4 differ diff --git a/video/26.删除排序数组中的重复项.mp4 b/video/26.删除排序数组中的重复项.mp4 new file mode 100644 index 00000000..846d10ac Binary files /dev/null and b/video/26.删除排序数组中的重复项.mp4 differ diff --git a/video/27.移除元素-双指针法.gif b/video/27.移除元素-双指针法.gif new file mode 100644 index 00000000..74aa479e Binary files /dev/null and b/video/27.移除元素-双指针法.gif differ diff --git a/video/27.移除元素-暴力解法.gif b/video/27.移除元素-暴力解法.gif new file mode 100644 index 00000000..0ccba4dc Binary files /dev/null and b/video/27.移除元素-暴力解法.gif differ diff --git a/video/27.移除元素-暴力解法.mp4 b/video/27.移除元素-暴力解法.mp4 new file mode 100644 index 00000000..5024f2d7 Binary files /dev/null and b/video/27.移除元素-暴力解法.mp4 differ diff --git a/video/27.移除元素.mp4 b/video/27.移除元素.mp4 new file mode 100644 index 00000000..9dc869a1 Binary files /dev/null and b/video/27.移除元素.mp4 differ diff --git a/video/344.反转字符串.gif b/video/344.反转字符串.gif new file mode 100644 index 00000000..b99ef086 Binary files /dev/null and b/video/344.反转字符串.gif differ diff --git a/video/344.反转字符串.mp4 b/video/344.反转字符串.mp4 new file mode 100644 index 00000000..80877057 Binary files /dev/null and b/video/344.反转字符串.mp4 differ diff --git a/video/450.删除二叉搜索树中的节点.mp4 b/video/450.删除二叉搜索树中的节点.mp4 new file mode 100644 index 00000000..a835887d Binary files /dev/null and b/video/450.删除二叉搜索树中的节点.mp4 differ diff --git a/video/654.最大二叉树.mp4 b/video/654.最大二叉树.mp4 new file mode 100644 index 00000000..70515bfb Binary files /dev/null and b/video/654.最大二叉树.mp4 differ diff --git a/video/701.二叉搜索树中的插入操作.mp4 b/video/701.二叉搜索树中的插入操作.mp4 new file mode 100644 index 00000000..a3f00c95 Binary files /dev/null and b/video/701.二叉搜索树中的插入操作.mp4 differ diff --git a/video/中序遍历迭代(统一写法).mp4 b/video/中序遍历迭代(统一写法).mp4 new file mode 100644 index 00000000..6f3c1cc2 Binary files /dev/null and b/video/中序遍历迭代(统一写法).mp4 differ diff --git a/video/对称二叉树.mp4 b/video/对称二叉树.mp4 new file mode 100644 index 00000000..96d907fd Binary files /dev/null and b/video/对称二叉树.mp4 differ diff --git a/video/替换空格.mp4 b/video/替换空格.mp4 new file mode 100644 index 00000000..223743cd Binary files /dev/null and b/video/替换空格.mp4 differ diff --git a/video/翻转二叉树.mp4 b/video/翻转二叉树.mp4 new file mode 100644 index 00000000..73636b7b Binary files /dev/null and b/video/翻转二叉树.mp4 differ