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# 对称二叉树
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 二叉树的层序遍历
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 二叉树的锯齿形层序遍历
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 二叉树的最大深度
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 从前序与中序遍历序列构造二叉树
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 从中序与后序遍历序列构造二叉树
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 二叉树的层序遍历 II
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 将有序数组转换为二叉搜索树
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 有序链表转换二叉搜索树
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 平衡二叉树
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 二叉树的最小深度
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 路径总和
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 路径总和 II
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 二叉树展开为链表
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 不同的子序列
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 填充每个节点的下一个右侧节点指针
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 填充每个节点的下一个右侧节点指针 II
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 杨辉三角
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 杨辉三角 II
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 三角形最小路径和
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 买卖股票的最佳时机
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 买卖股票的最佳时机 II
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 买卖股票的最佳时机 III
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 二叉树中的最大路径和
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 验证回文串
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 单词接龙 II
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 单词接龙
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 最长连续序列
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 求根节点到叶节点数字之和
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 被围绕的区域
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 分割回文串
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 分割回文串 II
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 克隆图
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 加油站
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 分发糖果
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 只出现一次的数字
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 只出现一次的数字 II
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 复制带随机指针的链表
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 单词拆分
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 单词拆分 II
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 环形链表
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 环形链表 II
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 重排链表
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 二叉树的前序遍历
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 二叉树的后序遍历
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# LRU 缓存机制
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 对链表进行插入排序
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 排序链表
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 直线上最多的点数
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 逆波兰表达式求值
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 翻转字符串里的单词
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 乘积最大子数组
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 寻找旋转排序数组中的最小值
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 寻找旋转排序数组中的最小值 II
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 最小栈
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 上下翻转二叉树
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 用 Read4 读取 N 个字符
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 用 Read4 读取 N 个字符 II
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 至多包含两个不同字符的最长子串
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 相交链表
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 相隔为 1 的编辑距离
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 寻找峰值
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 缺失的区间
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 最大间距
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 比较版本号
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 分数到小数
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 两数之和 II - 输入有序数组
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# Excel表列名称
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 多数元素
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 两数之和 III - 数据结构设计
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# Excel表列序号
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 阶乘后的零
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 二叉搜索树迭代器
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 地下城游戏
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 组合两个表
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 第二高的薪水
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 第N高的薪水
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 分数排名
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 最大数
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 连续出现的数字
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 超过经理收入的员工
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 查找重复的电子邮箱
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 从不订购的客户
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 部门工资最高的员工
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 部门工资前三高的所有员工
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 翻转字符串里的单词 II
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 重复的DNA序列
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 买卖股票的最佳时机 IV
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 旋转数组
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 颠倒二进制位
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 位1的个数
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 统计词频
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 有效电话号码
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 转置文件
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 第十行
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 删除重复的电子邮箱
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 上升的温度
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 打家劫舍
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 二叉树的右视图
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
# 岛屿数量
以下错误的选项是?
## aop
### before
```cpp
```
### after
```cpp
```
## 答案
```cpp
```
## 选项
### A
```cpp
```
### B
```cpp
```
### C
```cpp
```
此差异已折叠。
此差异已折叠。
此差异已折叠。
此差异已折叠。
此差异已折叠。
此差异已折叠。
此差异已折叠。
此差异已折叠。
此差异已折叠。
此差异已折叠。
此差异已折叠。
此差异已折叠。
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