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i want to generate unique id in c. what should i do?
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3 ответов
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you could generate a random string , then use a hashmap to cache the result. if you generate a string already in cache you throw away the result & regenerate to make sure its unique. If it is unique? Store it in cache and return it.
advantage is hashmap lookup time is 0(1) best case , so its as fast as accessing array element.
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can i ask. what is id, a unique string or unique number??
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string