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0904-fruit-into-baskets/README.md

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+<h2><a href="https://leetcode.com/problems/fruit-into-baskets/">904. Fruit Into Baskets</a></h2><h3>Medium</h3><hr><div><p>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 <code>fruits</code> where <code>fruits[i]</code> is the <strong>type</strong> of fruit the <code>i<sup>th</sup></code> tree produces.</p>
+
+<p>You want to collect as much fruit as possible. However, the owner has some strict rules that you must follow:</p>
+
+<ul>
+	<li>You only have <strong>two</strong> baskets, and each basket can only hold a <strong>single type</strong> of fruit. There is no limit on the amount of fruit each basket can hold.</li>
+	<li>Starting from any tree of your choice, you must pick <strong>exactly one fruit</strong> from <strong>every</strong> tree (including the start tree) while moving to the right. The picked fruits must fit in one of your baskets.</li>
+	<li>Once you reach a tree with fruit that cannot fit in your baskets, you must stop.</li>
+</ul>
+
+<p>Given the integer array <code>fruits</code>, return <em>the <strong>maximum</strong> number of fruits you can pick</em>.</p>
+
+<p>&nbsp;</p>
+<p><strong class="example">Example 1:</strong></p>
+
+<pre><strong>Input:</strong> fruits = [<u>1,2,1</u>]
+<strong>Output:</strong> 3
+<strong>Explanation:</strong> We can pick from all 3 trees.
+</pre>
+
+<p><strong class="example">Example 2:</strong></p>
+
+<pre><strong>Input:</strong> fruits = [0,<u>1,2,2</u>]
+<strong>Output:</strong> 3
+<strong>Explanation:</strong> We can pick from trees [1,2,2].
+If we had started at the first tree, we would only pick from trees [0,1].
+</pre>
+
+<p><strong class="example">Example 3:</strong></p>
+
+<pre><strong>Input:</strong> fruits = [1,<u>2,3,2,2</u>]
+<strong>Output:</strong> 4
+<strong>Explanation:</strong> We can pick from trees [2,3,2,2].
+If we had started at the first tree, we would only pick from trees [1,2].
+</pre>
+
+<p>&nbsp;</p>
+<p><strong>Constraints:</strong></p>
+
+<ul>
+	<li><code>1 &lt;= fruits.length &lt;= 10<sup>5</sup></code></li>
+	<li><code>0 &lt;= fruits[i] &lt; fruits.length</code></li>
+</ul>
+</div>