In a row of trees, the i-th tree produces fruit with type tree[i]. You start at any tree of your choice, then repeatedly perform the following steps: Add one piece of fruit from this tree to your baskets.  If you cannot, stop. Move to the next tree t…

sliding window(滑动窗口)算法 class Solution(object): def totalFruit(self, tree): """ :type tree: List[int] :rtype: int """ count=collections.Counter() left=ans=0 for i,val in enumerate(tree): count[val]+=1 while (len(count)>=3):…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址: https://leetcode.com/problems/fruit-into-baskets/description/ 题目描述: In a row of trees, the i-th tree produces fruit with type tree[i]. You start at any tree of your choice, then repeatedly…

In a row of trees, the i-th tree produces fruit with type tree[i]. You start at any tree of your choice, then repeatedly perform the following steps: Add one piece of fruit from this tree to your baskets. If you cannot, stop. Move to the next tree to…

In a row of trees, the i-th tree produces fruit with type tree[i]. You start at any tree of your choice, then repeatedly perform the following steps: Add one piece of fruit from this tree to your baskets.  If you cannot, stop. Move to the next tree t…

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Given a string S, find the length of the longest substring T that contains at most two distinct characters.For example,Given S = “eceba”,T is “ece” which its length is 3. 这道题给我们一个字符串,让我们求最多有两个不同字符的最长子串.那么我们首先想到的是用哈希表来做,哈希表记录每个字符的出现次数,然后如果哈希表中的映射数量超过两…

原题链接在这里:https://leetcode.com/problems/longest-substring-with-at-most-two-distinct-characters/ 题目: Given a string, find the length of the longest substring T that contains at most 2 distinct characters. For example, Given s = “eceba”, T is "ece"…

Given a string s , find the length of the longest substring t  that contains at most 2 distinct characters. Example 1: Input: "eceba" Output: 3 Explanation: tis "ece" which its length is 3. Example 2: Input: "ccaabbb" Output:…