# 归档 2017年1月

## LeetCode Weekly Contest 17解题报告 作者是 在线疯狂 发布于 2017年1月29日 在 LeetCode.

LeetCode Weekly Contest 17是LeetCode举办的第二十一场正式周赛，共3道题目，比赛时长1.5小时。

LeetCode 501. Find Mode in Binary Tree

LeetCode 495. Teemo Attacking

LeetCode 499. The Maze II

## 题目描述：

LeetCode 499. The Maze II

There is a ball in a maze with empty spaces and walls. The ball can go through empty spaces by rolling up (u), down (d), left (l) or right (r), but it won't stop ...

## 题目描述：

LeetCode 495. Teemo Attacking

In LLP world, there is a hero called Teemo and his attacking can make his enemy Ashe be in poisoned condition. Now, given the Teemo's attacking ascending time series towards Ashe and the poisoning time ...

## 题目描述：

LeetCode 501. Find Mode in Binary Tree

Given a binary tree with duplicates. You have to find all the mode(s) in given binary tree.

For example:
Given binary tree `[1,null,2,2]`,

```   1
\
2
/
2
```

return `[2 ...`

## LeetCode Weekly Contest 16B解题报告 作者是 在线疯狂 发布于 2017年1月22日 在 LeetCode.

LeetCode Weekly Contest 16B是LeetCode举办的第二十场正式周赛，共3道题目，比赛时长1.5小时。

LeetCode 492. Construct the rectangle

LeetCode 486. Predict the Winner

LeetCode 483. Smallest Good Base