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23 lines
557 B
HTML
23 lines
557 B
HTML
<p>无重复字符串的排列组合。编写一种方法，计算某字符串的所有排列组合，字符串每个字符均不相同。</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>：S = "qwe"
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<strong> 输出</strong>：["qwe", "qew", "wqe", "weq", "ewq", "eqw"]
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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>：S = "ab"
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<strong> 输出</strong>：["ab", "ba"]
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</pre>
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<p><strong>提示：</strong></p>
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<ol>
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<li>字符都是英文字母。</li>
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<li>字符串长度在[1, 9]之间。</li>
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</ol>
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