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@@ -149,7 +149,7 @@
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"__typename": "CodeSnippetNode"
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}
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],
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"stats": "{\"totalAccepted\": \"34.2K\", \"totalSubmission\": \"42.2K\", \"totalAcceptedRaw\": 34170, \"totalSubmissionRaw\": 42168, \"acRate\": \"81.0%\"}",
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"stats": "{\"totalAccepted\": \"34.2K\", \"totalSubmission\": \"42.2K\", \"totalAcceptedRaw\": 34178, \"totalSubmissionRaw\": 42178, \"acRate\": \"81.0%\"}",
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"hints": [
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"方法1:假设你有abc的所有排列。你怎么用它来得到abcd的所有排列?",
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"方法1:abc的排列组合表示abc的所有组合方式。现在,我们要创建abcd的所有组合方式。选择abcd的特定组合,如bdca。这个bdca字符串也代表abc的一种排列方式:删除d,你会得到bca。那么给定字符串bca,你是否可以创建包含d 的所有“相关”排列组合?",
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