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+<h2><a href="https://leetcode.com/problems/largest-perimeter-triangle">976. Largest Perimeter Triangle</a></h2><h3>Easy</h3><hr><p>Given an integer array <code>nums</code>, return <em>the largest perimeter of a triangle with a non-zero area, formed from three of these lengths</em>. If it is impossible to form any triangle of a non-zero area, return <code>0</code>.</p>
+
+<p>&nbsp;</p>
+<p><strong class="example">Example 1:</strong></p>
+
+<pre>
+<strong>Input:</strong> nums = [2,1,2]
+<strong>Output:</strong> 5
+<strong>Explanation:</strong> You can form a triangle with three side lengths: 1, 2, and 2.
+</pre>
+
+<p><strong class="example">Example 2:</strong></p>
+
+<pre>
+<strong>Input:</strong> nums = [1,2,1,10]
+<strong>Output:</strong> 0
+<strong>Explanation:</strong> 
+You cannot use the side lengths 1, 1, and 2 to form a triangle.
+You cannot use the side lengths 1, 1, and 10 to form a triangle.
+You cannot use the side lengths 1, 2, and 10 to form a triangle.
+As we cannot use any three side lengths to form a triangle of non-zero area, we return 0.
+</pre>
+
+<p>&nbsp;</p>
+<p><strong>Constraints:</strong></p>
+
+<ul>
+<li><code>3 &lt;= nums.length &lt;= 10<sup>4</sup></code></li>
+<li><code>1 &lt;= nums[i] &lt;= 10<sup>6</sup></code></li>
+</ul>