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31 lines
1.1 KiB
HTML
31 lines
1.1 KiB
HTML
<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>
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<p> </p>
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<p><strong class="example">Example 1:</strong></p>
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<pre>
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<strong>Input:</strong> nums = [2,1,2]
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<strong>Output:</strong> 5
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<strong>Explanation:</strong> You can form a triangle with three side lengths: 1, 2, and 2.
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</pre>
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<p><strong class="example">Example 2:</strong></p>
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<pre>
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<strong>Input:</strong> nums = [1,2,1,10]
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<strong>Output:</strong> 0
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<strong>Explanation:</strong>
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You cannot use the side lengths 1, 1, and 2 to form a triangle.
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You cannot use the side lengths 1, 1, and 10 to form a triangle.
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You cannot use the side lengths 1, 2, and 10 to form a triangle.
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As we cannot use any three side lengths to form a triangle of non-zero area, we return 0.
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</pre>
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<p> </p>
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<p><strong>Constraints:</strong></p>
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<ul>
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<li><code>3 <= nums.length <= 10<sup>4</sup></code></li>
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<li><code>1 <= nums[i] <= 10<sup>6</sup></code></li>
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</ul>
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