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52 lines
1.3 KiB
HTML
52 lines
1.3 KiB
HTML
<p>给定一个链表数组，每个链表都已经按升序排列。</p>
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<p>请将所有链表合并到一个升序链表中，返回合并后的链表。</p>
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<p> </p>
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<p><strong>示例 1：</strong></p>
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<pre>
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<strong>输入：</strong>lists = [[1,4,5],[1,3,4],[2,6]]
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<strong>输出：</strong>[1,1,2,3,4,4,5,6]
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<strong>解释：</strong>链表数组如下：
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[
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1->4->5,
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1->3->4,
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2->6
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]
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将它们合并到一个有序链表中得到。
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1->1->2->3->4->4->5->6
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</pre>
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<p><strong>示例 2：</strong></p>
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<pre>
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<strong>输入：</strong>lists = []
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<strong>输出：</strong>[]
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</pre>
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<p><strong>示例 3：</strong></p>
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<pre>
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<strong>输入：</strong>lists = [[]]
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<strong>输出：</strong>[]
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</pre>
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<p> </p>
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<p><strong>提示：</strong></p>
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<ul>
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<li><code>k == lists.length</code></li>
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<li><code>0 <= k <= 10^4</code></li>
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<li><code>0 <= lists[i].length <= 500</code></li>
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<li><code>-10^4 <= lists[i][j] <= 10^4</code></li>
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<li><code>lists[i]</code> 按 <strong>升序</strong> 排列</li>
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<li><code>lists[i].length</code> 的总和不超过 <code>10^4</code></li>
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</ul>
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<p> </p>
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<p><meta charset="UTF-8" />注意：本题与主站 23 题相同： <a href="https://leetcode-cn.com/problems/merge-k-sorted-lists/">https://leetcode-cn.com/problems/merge-k-sorted-lists/</a></p>
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