Stream API #3
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Stream API #3
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StreamAPI/src/WordCounter.java
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| private Map<String, Integer> count() throws IOException { | ||
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| return Arrays.stream(Files.readAllLines(file.toPath()).stream() // список строк |
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Вот это мне не нравится. Ты, получается, весь файл грузишь в память. А если это дамп википедии? Используй Files.lines и сделай единый стрим, без этого вложенного
StreamAPI/src/WordCounter.java
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| } else { | ||
| previous.put(next, 1); | ||
| private static Map<String, Integer> MyAccumulator(Map<String, Integer> previous, List<String> next) { | ||
| for (String word : next) { |
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Не, так не интересно. Сделай без цикла тут.
StreamAPI/src/WordCounter.java
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| private static Map<String, Integer> MyAccumulator(Map<String, Integer> previous, List<String> next) { | ||
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| return WordCounter.MyCombiner(previous, next.stream().filter((w) -> w.length() > 0) | ||
| .collect(Collectors.groupingBy(String::toLowerCase, Collectors.summingInt((w) -> 1)))); |
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Да не должен accumulator выполнять такую сложную работу. Верни фильтрацию и преобразование к нижнему регистру назад в основной стрим.
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