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。
比赛链接：https://leetcode.com/contest/leetcode-weekly-contest-50/
题解列表：
LeetCode 680. Valid Palindrome II
归档 2017年9月17日
LeetCode Weekly Contest 50解题报告
[LeetCode]24 Game
作者是
发布于
在
LeetCode.
题目描述：
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 ...
[LeetCode]Valid Parenthesis String
作者是
发布于
在
LeetCode.
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 ...
[LeetCode]Map Sum Pairs
作者是
发布于
在
LeetCode.
题目描述：
Implement a MapSum class with insert, and sum methods.
For the method insert, you'll be given a pair of (string, integer). The string represents the key and the integer represents the value. If the ...
[LeetCode]Valid Palindrome II
作者是
发布于
在
LeetCode.
题目描述：
LeetCode 680. Valid Palindrome II
Given a non-empty string s, you may delete at most one character. Judge whether you can make it a palindrome.
Example 1:
Input: "aba" Output: True
Example 2:
Input: "abca" Output: True Explanation: You ...