LeetCode Weekly Contest 40是LeetCode举办的第四十五场正式周赛，共4道题目，比赛时长1.5小时。
比赛链接：https://leetcode.com/contest/leetcode-weekly-contest-40/
题解列表：
LeetCode 637. Average of Levels in Binary Tree
归档 2017年7月
LeetCode Weekly Contest 40解题报告
[LeetCode]Decode Ways II
作者是
发布于
在
LeetCode.
题目描述：
A message containing letters from A-Z is being encoded to numbers using the following mapping way:
'A' -> 1 'B' -> 2 ... 'Z' -> 26
Beyond that, now the encoded string can also contain ...
[LeetCode]Shopping Offers
作者是
发布于
在
LeetCode.
题目描述：
In LeetCode Store, there are some kinds of items to sell. Each item has a price.
However, there are some special offers, and a special offer consists of one or more different kinds of items ...
[LeetCode]Solve the Equation
作者是
发布于
在
LeetCode.
题目描述：
LeetCode 640. Solve the Equation
Solve a given equation and return the value of x in the form of string "x=#value". The equation contains only '+', '-' operation, the variable x and its coefficient.
If there ...
[LeetCode]Average of Levels in Binary Tree
作者是
发布于
在
LeetCode.
题目描述：
LeetCode 637. Average of Levels in Binary Tree
Given a non-empty binary tree, return the average value of the nodes on each level in the form of an array.
Example 1:
Input:
3
/ \
9 20
/ \
15 7
Output: [3 ...