You are visiting a farm that has a single row of fruit trees arranged from left to right. The trees are represented by an integer array fruits where fruits[i] is the type of fruit the ith tree produces.
You want to collect as much fruit as possible. However, the owner has some strict rules that you must follow:
\n\nGiven the integer array fruits, return the maximum number of fruits you can pick.
\n
Example 1:
\n\n\nInput: fruits = [1,2,1]\nOutput: 3\nExplanation: We can pick from all 3 trees.\n\n\n
Example 2:
\n\n\nInput: fruits = [0,1,2,2]\nOutput: 3\nExplanation: We can pick from trees [1,2,2].\nIf we had started at the first tree, we would only pick from trees [0,1].\n\n\n
Example 3:
\n\n\nInput: fruits = [1,2,3,2,2]\nOutput: 4\nExplanation: We can pick from trees [2,3,2,2].\nIf we had started at the first tree, we would only pick from trees [1,2].\n\n\n
\n
Constraints:
\n\n1 <= fruits.length <= 1050 <= fruits[i] < fruits.length你正在探访一家农场，农场从左到右种植了一排果树。这些树用一个整数数组 fruits 表示，其中 fruits[i] 是第 i 棵树上的水果 种类 。
你想要尽可能多地收集水果。然而，农场的主人设定了一些严格的规矩，你必须按照要求采摘水果：
\n\n给你一个整数数组 fruits ，返回你可以收集的水果的 最大 数目。
\n\n
示例 1：
\n\n\n输入：fruits = [1,2,1]\n输出：3\n解释：可以采摘全部 3 棵树。\n\n\n
示例 2：
\n\n\n输入：fruits = [0,1,2,2]\n输出：3\n解释：可以采摘 [1,2,2] 这三棵树。\n如果从第一棵树开始采摘，则只能采摘 [0,1] 这两棵树。\n\n\n
示例 3：
\n\n\n输入：fruits = [1,2,3,2,2]\n输出：4\n解释：可以采摘 [2,3,2,2] 这四棵树。\n如果从第一棵树开始采摘，则只能采摘 [1,2] 这两棵树。\n\n\n
示例 4：
\n\n\n输入：fruits = [3,3,3,1,2,1,1,2,3,3,4]\n输出：5\n解释：可以采摘 [1,2,1,1,2] 这五棵树。\n\n\n
\n\n
提示：
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