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39 lines
1.6 KiB
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39 lines
1.6 KiB
HTML
<p>You are given an integer array <code>nums</code> and a <strong>positive</strong> integer <code>k</code>. You can choose any <strong>subsequence</strong> of the array and sum all of its elements together.</p>
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<p>We define the <strong>K-Sum</strong> of the array as the <code>k<sup>th</sup></code> <strong>largest</strong> subsequence sum that can be obtained (<strong>not</strong> necessarily distinct).</p>
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<p>Return <em>the K-Sum of the array</em>.</p>
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<p>A <strong>subsequence</strong> is an array that can be derived from another array by deleting some or no elements without changing the order of the remaining elements.</p>
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<p><strong>Note</strong> that the empty subsequence is considered to have a sum of <code>0</code>.</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 = [2,4,-2], k = 5
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<strong>Output:</strong> 2
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<strong>Explanation:</strong> All the possible subsequence sums that we can obtain are the following sorted in decreasing order:
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- 6, 4, 4, 2, <u>2</u>, 0, 0, -2.
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The 5-Sum of the array is 2.
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</pre>
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<p><strong>Example 2:</strong></p>
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<pre>
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<strong>Input:</strong> nums = [1,-2,3,4,-10,12], k = 16
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<strong>Output:</strong> 10
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<strong>Explanation:</strong> The 16-Sum of the array is 10.
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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>n == nums.length</code></li>
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<li><code>1 <= n <= 10<sup>5</sup></code></li>
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<li><code>-10<sup>9</sup> <= nums[i] <= 10<sup>9</sup></code></li>
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<li><code>1 <= k <= min(2000, 2<sup>n</sup>)</code></li>
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</ul>
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