题目描述：
LeetCode 684. Redundant Connection
We are given a "tree" in the form of a 2D-array, with distinct values for each node.
In the given 2D-array, each element pair [u, v] represents that v is a child of u in ...
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[LeetCode]Redundant Connection
[LeetCode]Next Closest Time
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LeetCode.
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 ...
[LeetCode]Baseball Game
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LeetCode.
题目描述：
You're now a baseball game point recorder.
Given a list of strings, each string can be one of the 4 following types:
Integer(one round's score): Directly represents the number of points you get in ...
LeetCode Weekly Contest 50解题报告
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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。
比赛链接：https://leetcode.com/contest/leetcode-weekly-contest-50/
题解列表：
LeetCode 680. Valid Palindrome II
[LeetCode]24 Game
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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 ...