June 2018
Beginner to intermediate
240 pages
3h 54m
Russian
Content preview from Алгоритмы и структуры данных. Извлечение информации на языке Java
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2
Анализ алгоритмов
Как мы видели в предыдущей главе, Java предоставляет две реа-
лизации интерфейса List: ArrayList и LinkedList. Для одних
приложений быстрее работает вторая реализация, для других —
первая.
Чтобы решить, какая из них лучше подходит для конкретного
приложения, можно использовать такой способ: попробовать
обе и посмотреть, сколько каждой из них требуется времени.
Данный подход, который называется профилированием, чреват
несколькими проблемами.
1. Прежде чем вы сможете сравнить алгоритмы, вы должны
реализовать их оба.
2. Результаты могут зависеть от того, какой компьютер вы ис-
пользуете. Один алгоритм хорошо работает на одной маши-
не, второй — на другой.
29
Глава 2. Анализ алгоритмов
3. Результаты могут зависеть от размера задачи ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.