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31 lines
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31 lines
1.3 KiB
HTML
<p>Given an integer array <code>nums</code> of <code>2n</code> integers, group these integers into <code>n</code> pairs <code>(a<sub>1</sub>, b<sub>1</sub>), (a<sub>2</sub>, b<sub>2</sub>), ..., (a<sub>n</sub>, b<sub>n</sub>)</code> such that the sum of <code>min(a<sub>i</sub>, b<sub>i</sub>)</code> for all <code>i</code> is <strong>maximized</strong>. Return<em> the maximized sum</em>.</p>
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<p> </p>
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<p><strong>Example 1:</strong></p>
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<pre>
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<strong>Input:</strong> nums = [1,4,3,2]
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<strong>Output:</strong> 4
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<strong>Explanation:</strong> All possible pairings (ignoring the ordering of elements) are:
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1. (1, 4), (2, 3) -> min(1, 4) + min(2, 3) = 1 + 2 = 3
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2. (1, 3), (2, 4) -> min(1, 3) + min(2, 4) = 1 + 2 = 3
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3. (1, 2), (3, 4) -> min(1, 2) + min(3, 4) = 1 + 3 = 4
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So the maximum possible sum is 4.</pre>
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<p><strong>Example 2:</strong></p>
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<pre>
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<strong>Input:</strong> nums = [6,2,6,5,1,2]
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<strong>Output:</strong> 9
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<strong>Explanation:</strong> The optimal pairing is (2, 1), (2, 5), (6, 6). min(2, 1) + min(2, 5) + min(6, 6) = 1 + 2 + 6 = 9.
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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>1 <= n <= 10<sup>4</sup></code></li>
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<li><code>nums.length == 2 * n</code></li>
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<li><code>-10<sup>4</sup> <= nums[i] <= 10<sup>4</sup></code></li>
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</ul>
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