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35 lines
650 B
HTML
35 lines
650 B
HTML
<p>给定两个整数 <code>n</code> 和 <code>k</code>，返回范围 <code>[1, n]</code> 中所有可能的 <code>k</code> 个数的组合。</p>
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<p>你可以按 <strong>任何顺序</strong> 返回答案。</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>n = 4, k = 2
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<strong>输出：</strong>
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[
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[2,4],
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[3,4],
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[2,3],
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[1,2],
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[1,3],
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[1,4],
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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>n = 1, k = 1
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<strong>输出：</strong>[[1]]</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>1 <= n <= 20</code></li>
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<li><code>1 <= k <= n</code></li>
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</ul>
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