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leetcode-cn/problem (Chinese)/分割字符串 [partition-string].html
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167
leetcode-cn/problem (Chinese)/分割字符串 [partition-string].html
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<p>给你一个字符串 <code>s</code>，按照以下步骤将其分割为 <strong>互不相同的段 </strong>：</p>
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<ul>
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<li>从下标 0 开始构建一个段。</li>
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<li>逐字符扩展当前段，直到该段之前未曾出现过。</li>
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<li>只要当前段是唯一的，就将其加入段列表，标记为已经出现过，并从下一个下标开始构建新的段。</li>
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<li>重复上述步骤，直到处理完整个字符串 <code>s</code>。</li>
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</ul>
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<p>返回字符串数组 <code>segments</code>，其中 <code>segments[i]</code> 表示创建的第 <code>i</code> 段。</p>
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<p> </p>
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<p><strong class="example">示例 1：</strong></p>
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<div class="example-block">
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<p><strong>输入：</strong> <span class="example-io">s = "abbccccd"</span></p>
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<p><strong>输出：</strong> <span class="example-io">["a","b","bc","c","cc","d"]</span></p>
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<p><strong>解释：</strong></p>
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<table style="border: 1px solid black;">
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<tbody>
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<tr>
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<th style="border: 1px solid black;">下标</th>
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<th style="border: 1px solid black;">添加后的段</th>
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<th style="border: 1px solid black;">已经出现过的段</th>
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<th style="border: 1px solid black;">当前段是否已经出现过？</th>
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<th style="border: 1px solid black;">新段</th>
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<th style="border: 1px solid black;">更新后已经出现过的段</th>
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</tr>
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<tr>
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<td style="border: 1px solid black;">0</td>
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<td style="border: 1px solid black;">"a"</td>
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<td style="border: 1px solid black;">[]</td>
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<td style="border: 1px solid black;">否</td>
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<td style="border: 1px solid black;">""</td>
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<td style="border: 1px solid black;">["a"]</td>
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</tr>
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<tr>
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<td style="border: 1px solid black;">1</td>
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<td style="border: 1px solid black;">"b"</td>
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<td style="border: 1px solid black;">["a"]</td>
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<td style="border: 1px solid black;">否</td>
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<td style="border: 1px solid black;">""</td>
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<td style="border: 1px solid black;">["a", "b"]</td>
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</tr>
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<tr>
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<td style="border: 1px solid black;">2</td>
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<td style="border: 1px solid black;">"b"</td>
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<td style="border: 1px solid black;">["a", "b"]</td>
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<td style="border: 1px solid black;">是</td>
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<td style="border: 1px solid black;">"b"</td>
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<td style="border: 1px solid black;">["a", "b"]</td>
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</tr>
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<tr>
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<td style="border: 1px solid black;">3</td>
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<td style="border: 1px solid black;">"bc"</td>
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<td style="border: 1px solid black;">["a", "b"]</td>
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<td style="border: 1px solid black;">否</td>
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<td style="border: 1px solid black;">""</td>
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<td style="border: 1px solid black;">["a", "b", "bc"]</td>
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</tr>
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<tr>
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<td style="border: 1px solid black;">4</td>
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<td style="border: 1px solid black;">"c"</td>
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<td style="border: 1px solid black;">["a", "b", "bc"]</td>
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<td style="border: 1px solid black;">否</td>
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<td style="border: 1px solid black;">""</td>
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<td style="border: 1px solid black;">["a", "b", "bc", "c"]</td>
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</tr>
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<tr>
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<td style="border: 1px solid black;">5</td>
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<td style="border: 1px solid black;">"c"</td>
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<td style="border: 1px solid black;">["a", "b", "bc", "c"]</td>
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<td style="border: 1px solid black;">是</td>
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<td style="border: 1px solid black;">"c"</td>
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<td style="border: 1px solid black;">["a", "b", "bc", "c"]</td>
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</tr>
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<tr>
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<td style="border: 1px solid black;">6</td>
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<td style="border: 1px solid black;">"cc"</td>
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<td style="border: 1px solid black;">["a", "b", "bc", "c"]</td>
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<td style="border: 1px solid black;">否</td>
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<td style="border: 1px solid black;">""</td>
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<td style="border: 1px solid black;">["a", "b", "bc", "c", "cc"]</td>
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</tr>
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<tr>
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<td style="border: 1px solid black;">7</td>
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<td style="border: 1px solid black;">"d"</td>
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<td style="border: 1px solid black;">["a", "b", "bc", "c", "cc"]</td>
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<td style="border: 1px solid black;">否</td>
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<td style="border: 1px solid black;">""</td>
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<td style="border: 1px solid black;">["a", "b", "bc", "c", "cc", "d"]</td>
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</tr>
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</tbody>
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</table>
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<p>因此，最终输出为 <code>["a", "b", "bc", "c", "cc", "d"]</code>。</p>
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</div>
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<p><strong class="example">示例 2：</strong></p>
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<div class="example-block">
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<p><strong>输入：</strong> <span class="example-io">s = "aaaa"</span></p>
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<p><strong>输出：</strong> <span class="example-io">["a","aa"]</span></p>
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<p><strong>解释：</strong></p>
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<table style="border: 1px solid black;">
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<tbody>
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<tr>
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<th style="border: 1px solid black;">下标</th>
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<th style="border: 1px solid black;">添加后的段</th>
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<th style="border: 1px solid black;">已经出现过的段</th>
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<th style="border: 1px solid black;">当前段是否已经出现过？</th>
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<th style="border: 1px solid black;">新段</th>
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<th style="border: 1px solid black;">更新后已经出现过的段</th>
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</tr>
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<tr>
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<td style="border: 1px solid black;">0</td>
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<td style="border: 1px solid black;">"a"</td>
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<td style="border: 1px solid black;">[]</td>
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<td style="border: 1px solid black;">否</td>
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<td style="border: 1px solid black;">""</td>
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<td style="border: 1px solid black;">["a"]</td>
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</tr>
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<tr>
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<td style="border: 1px solid black;">1</td>
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<td style="border: 1px solid black;">"a"</td>
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<td style="border: 1px solid black;">["a"]</td>
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<td style="border: 1px solid black;">是</td>
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<td style="border: 1px solid black;">"a"</td>
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<td style="border: 1px solid black;">["a"]</td>
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</tr>
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<tr>
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<td style="border: 1px solid black;">2</td>
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<td style="border: 1px solid black;">"aa"</td>
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<td style="border: 1px solid black;">["a"]</td>
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<td style="border: 1px solid black;">否</td>
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<td style="border: 1px solid black;">""</td>
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<td style="border: 1px solid black;">["a", "aa"]</td>
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</tr>
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<tr>
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<td style="border: 1px solid black;">3</td>
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<td style="border: 1px solid black;">"a"</td>
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<td style="border: 1px solid black;">["a", "aa"]</td>
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<td style="border: 1px solid black;">是</td>
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<td style="border: 1px solid black;">"a"</td>
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<td style="border: 1px solid black;">["a", "aa"]</td>
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</tr>
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</tbody>
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</table>
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<p>因此，最终输出为 <code>["a", "aa"]</code>。</p>
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</div>
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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 <= s.length <= 10<sup>5</sup></code></li>
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<li><code>s</code> 仅包含小写英文字母。</li>
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</ul>
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