# 归档 2017年9月

## 题目描述：

LeetCode 681. Next Closest Time

Given a time represented in the format "HH:MM", form the next closest time by reusing the current digits. There is no limit on how many times a digit can be reused.

You may ...

## 题目描述：

LeetCode 682. Baseball Game

You're now a baseball game point recorder.

Given a list of strings, each string can be one of the 4 following types:

1. `Integer` (one round's score): Directly represents the number of points you get in ...

## LeetCode Weekly Contest 50解题报告 作者是 在线疯狂 发布于 2017年9月17日 在 LeetCode.

LeetCode Weekly Contest 50是LeetCode举办的第五十三场正式周赛，共4道题目，比赛时长1.5小时。

LeetCode 680. Valid Palindrome II

LeetCode 677. Map Sum Pairs

LeetCode 678. Valid Parenthesis String

LeetCode 679. 24 Game

## 题目描述：

LeetCode 679. 24 Game

You have 4 cards each containing a number from 1 to 9. You need to judge whether they could operated through `*`, `/`, `+`, `-`, `(`, `)` to get the value of 24.

Example 1:

```Input: [4, 1, 8, 7]
Output ...```

## 题目描述：

LeetCode 678. Valid Parenthesis String

Given a string containing only three types of characters: '(', ')' and '*', write a function to check whether this string is valid. We define the validity of a string by ...