# 档案日期2017的25

## LeetCode Weekly Contest 38解题报告 作者是 在线疯狂 发布于 2017年6月25日 在 LeetCode.

LeetCode Weekly Contest 38是LeetCode举办的第四十三场正式周赛，共4道题目，比赛时长1.5小时。

LeetCode 628. Maximum Product of Three Numbers

LeetCode 630. Course Schedule III

LeetCode 629. K Inverse Pairs Array

LeetCode 631. Design Excel Sum Formula

## 题目描述：

LeetCode 631. Design Excel Sum Formula

Your task is to design the basic function of Excel and implement the function of sum formula. Specifically, you need to implement the following functions:

`Excel(int H, char W):` This is the ...

## 题目描述：

LeetCode 629. K Inverse Pairs Array

Given two integers n and k, find how many different arrays consist of numbers from 1 to n such that there are exactly k inverse pairs.

We define an inverse pair as following ...

## 题目描述：

LeetCode 630. Course Schedule III

There are `n` different online courses numbered from `1` to `n`. Each course has some duration(course length) `t` and closed on `dth` day. A course should be taken continuously for `t` days ...

## 题目描述：

LeetCode  628. Maximum Product of Three Numbers

Given an integer array, find three numbers whose product is maximum and output the maximum product.

Example 1:

```Input: [1,2,3]
Output: 6
```

Example 2:

```Input: [1,2,3,4]
Output ...```