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https://gitee.com/coder-xiaomo/leetcode-problemset
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"translatedContent": "<p>返回 <code>s</code> 字典序最小的子序列,该子序列包含 <code>s</code> 的所有不同字符,且只包含一次。</p>\n\n<p><strong>注意:</strong>该题与 316 <a href=\"https://leetcode.com/problems/remove-duplicate-letters/\">https://leetcode.com/problems/remove-duplicate-letters/</a> 相同</p>\n\n<p> </p>\n\n<p><strong>示例 1:</strong></p>\n\n<pre>\n<strong>输入:</strong><code>s = \"bcabc\"</code>\n<strong>输出<code>:</code></strong><code>\"abc\"</code>\n</pre>\n\n<p><strong>示例 2:</strong></p>\n\n<pre>\n<strong>输入:</strong><code>s = \"cbacdcbc\"</code>\n<strong>输出:</strong><code>\"acdb\"</code></pre>\n\n<p> </p>\n\n<p><strong>提示:</strong></p>\n\n<ul>\n\t<li><code>1 <= s.length <= 1000</code></li>\n\t<li><code>s</code> 由小写英文字母组成</li>\n</ul>\n",
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"isPaidOnly": false,
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"difficulty": "Medium",
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"likes": 140,
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"dislikes": 0,
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"similarQuestions": "[]",
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@@ -155,7 +155,7 @@
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"__typename": "CodeSnippetNode"
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}
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"stats": "{\"totalAccepted\": \"19K\", \"totalSubmission\": \"32.7K\", \"totalAcceptedRaw\": 18989, \"totalSubmissionRaw\": 32705, \"acRate\": \"58.1%\"}",
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"hints": [
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"Greedily try to add one missing character. How to check if adding some character will not cause problems ? Use bit-masks to check whether you will be able to complete the sub-sequence if you add the character at some index i."
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],
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