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2338-minimum-consecutive-cards-to-pick-up/README.md

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+<h2><a href="https://leetcode.com/problems/minimum-consecutive-cards-to-pick-up">2338. Minimum Consecutive Cards to Pick Up</a></h2><h3>Medium</h3><hr><p>You are given an integer array <code>cards</code> where <code>cards[i]</code> represents the <strong>value</strong> of the <code>i<sup>th</sup></code> card. A pair of cards are <strong>matching</strong> if the cards have the <strong>same</strong> value.</p>
+
+<p>Return<em> the <strong>minimum</strong> number of <strong>consecutive</strong> cards you have to pick up to have a pair of <strong>matching</strong> cards among the picked cards.</em> If it is impossible to have matching cards, return <code>-1</code>.</p>
+
+<p>&nbsp;</p>
+<p><strong class="example">Example 1:</strong></p>
+
+<pre>
+<strong>Input:</strong> cards = [3,4,2,3,4,7]
+<strong>Output:</strong> 4
+<strong>Explanation:</strong> We can pick up the cards [3,4,2,3] which contain a matching pair of cards with value 3. Note that picking up the cards [4,2,3,4] is also optimal.
+</pre>
+
+<p><strong class="example">Example 2:</strong></p>
+
+<pre>
+<strong>Input:</strong> cards = [1,0,5,3]
+<strong>Output:</strong> -1
+<strong>Explanation:</strong> There is no way to pick up a set of consecutive cards that contain a pair of matching cards.
+</pre>
+
+<p>&nbsp;</p>
+<p><strong>Constraints:</strong></p>
+
+<ul>
+	<li><code>1 &lt;= cards.length &lt;= 10<sup>5</sup></code></li>
+	<li><code>0 &lt;= cards[i] &lt;= 10<sup>6</sup></code></li>
+</ul>