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20 lines
398 B
HTML
20 lines
398 B
HTML
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<p>幂集。编写一种方法,返回某集合的所有子集。集合中<strong>不包含重复的元素</strong>。</p>
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<p>说明:解集不能包含重复的子集。</p>
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<p><strong>示例:</strong></p>
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<pre><strong> 输入</strong>: nums = [1,2,3]
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<strong> 输出</strong>:
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[
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[3],
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[1],
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[2],
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[1,2,3],
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[1,3],
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[2,3],
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[1,2],
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[]
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]
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</pre>
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