Baozi Training Leetcode solution 47 permutations II

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Комментарии
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@George Chen: No, you don't need to unless they ask

BaoziTraining
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Thanks. nice sharing! btw, may I ask two things to this question while tech interviewing?
Is it better to code sorting algo. manually and show interviewer iteration solutions instead of calling built-in method and recursive way. no offense, just curious.

georgechen
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Would you please explain more example why sorting is needed ?

ted
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Why do we need the visited array again?

keworld
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