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41 lines
1.4 KiB
HTML
41 lines
1.4 KiB
HTML
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<p>给你一个字符串 <code>s</code>,「<code>k</code> 倍重复项删除操作」将会从 <code>s</code> 中选择 <code>k</code> 个相邻且相等的字母,并删除它们,使被删去的字符串的左侧和右侧连在一起。</p>
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<p>你需要对 <code>s</code> 重复进行无限次这样的删除操作,直到无法继续为止。</p>
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<p>在执行完所有删除操作后,返回最终得到的字符串。</p>
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<p>本题答案保证唯一。</p>
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<p> </p>
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<p><strong>示例 1:</strong></p>
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<pre><strong>输入:</strong>s = "abcd", k = 2
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<strong>输出:</strong>"abcd"
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<strong>解释:</strong>没有要删除的内容。</pre>
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<p><strong>示例 2:</strong></p>
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<pre><strong>输入:</strong>s = "deeedbbcccbdaa", k = 3
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<strong>输出:</strong>"aa"
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<strong>解释:
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</strong>先删除 "eee" 和 "ccc",得到 "ddbbbdaa"
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再删除 "bbb",得到 "dddaa"
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最后删除 "ddd",得到 "aa"</pre>
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<p><strong>示例 3:</strong></p>
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<pre><strong>输入:</strong>s = "pbbcggttciiippooaais", k = 2
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<strong>输出:</strong>"ps"
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</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 <= s.length <= 10^5</code></li>
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<li><code>2 <= k <= 10^4</code></li>
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<li><code>s</code> 中只含有小写英文字母。</li>
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</ul>
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