Java Core December: Collections. Лекция #17 (Часть 3)

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Курс " Программирование на Java с нуля " - 24%
Автор курса: Иван Головач
  1. Golovach Courses
  2. лекции
  3. Collections Framework
  4. deque
  5. java
  6. уроки
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Комментарии
Автор

0:00 - о принципах создания хеш-функций
12:36 - HashSet и теория вероятности

filaroso
Автор

Почему именно 31? Я нашел ответ.
Of the remaining four, I'd probably select P(31), as it's the cheapest to calculate on a RISC machine (because 31 is the difference of two powers of two). P(33) is similarly cheap to calculate, but it's performance is marginally worse, and 33 is composite, which makes me a bit nervous.
Josh
То есть все-таки есть некоторая разница между умножениемн 31 и на

CETuK