LeetCode Weekly Contest 43是LeetCode举办的第四十八场正式周赛,共4道题目,比赛时长1.5小时。
比赛链接:https://leetcode.com/contest/leetcode-weekly-contest-43/
题解列表:
LeetCode Weekly Contest 43是LeetCode举办的第四十八场正式周赛,共4道题目,比赛时长1.5小时。
比赛链接:https://leetcode.com/contest/leetcode-weekly-contest-43/
题解列表:
Imagine you have a special keyboard with the following keys:
Key 1: (A)
: Prints one 'A' on screen.
Key 2: (Ctrl-A)
: Select the whole screen.
Key 3: (Ctrl-C)
: Copy selection to buffer.
Key 4 ...
In the world of Dota2, there are two parties: the Radiant
and the Dire
.
The Dota2 senate consists of senators coming from two parties. Now the senate wants to make a decision about a change ...
Initially on a notepad only one character 'A' is present. You can perform two operations on this notepad for each step:
Copy All
: You can copy all the characters present on the notepad (partial ...LeetCode 652. Find Duplicate Subtrees
Given a binary tree, return all duplicate subtrees. For each kind of duplicate subtrees, you only need to return the root node of any one of them.
Two trees are duplicate if they have ...