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leetcode-problemset/leetcode-cn/problem (Chinese)/生成不含相邻零的二进制字符串 [generate-binary-strings-without-adjacent-zeros].html

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2024-07-16 16:03:30 +08:00
<p>给你一个正整数 <code>n</code></p>
<p>如果一个二进制字符串 <code>x</code> 的所有长度为 2 的<span data-keyword="substring-nonempty">子字符串</span>中包含 <strong>至少</strong> 一个 <code>"1"</code>,则称 <code>x</code> 是一个<strong> 有效</strong> 字符串。</p>
<p>返回所有长度为 <code>n</code><strong> 有效</strong> 字符串,可以以任意顺序排列。</p>
<p>&nbsp;</p>
<p><strong class="example">示例 1</strong></p>
<div class="example-block">
<p><strong>输入:</strong> <span class="example-io">n = 3</span></p>
<p><strong>输出:</strong> <span class="example-io">["010","011","101","110","111"]</span></p>
<p><strong>解释:</strong></p>
<p>长度为 3 的有效字符串有:<code>"010"</code><code>"011"</code><code>"101"</code><code>"110"</code><code>"111"</code></p>
</div>
<p><strong class="example">示例 2</strong></p>
<div class="example-block">
<p><strong>输入:</strong> <span class="example-io">n = 1</span></p>
<p><strong>输出:</strong> <span class="example-io">["0","1"]</span></p>
<p><strong>解释:</strong></p>
<p>长度为 1 的有效字符串有:<code>"0"</code><code>"1"</code></p>
</div>
<p>&nbsp;</p>
<p><strong>提示:</strong></p>
<ul>
<li><code>1 &lt;= n &lt;= 18</code></li>
</ul>