How to loop over and edit stream values (string)

Question

Given this string we want count word occurrence (term frquency)

String input="this a test of tests",

This will split our phrase into words

Stream<String> stream = Stream.of(input.toLowerCase().split("\\s")).parallel();

How to edit a the stream values ,as follow : if a element of the stream ends with an "s" character then remove it.

use filter operation on your stream.

AdamSkywalker
– AdamSkywalker

2016-04-28 16:17:16 +00:00
Commented Apr 28, 2016 at 16:17 — AdamSkywalker
– AdamSkywalker, Commented Apr 28, 2016 at 16:17

user4910279 · Accepted Answer · 2016-04-29 00:51:55Z

1

Try this.

    String input="this a test of tests";
    Map<String, Long> map = Stream.of(input.toLowerCase().split("\\s")).parallel()
        .map(s -> s.replaceFirst("s$", ""))
        .collect(Collectors.groupingBy(Function.identity(), Collectors.counting()));
    System.out.println(map);

result:

{a=1, test=2, thi=1, of=1}

answered Apr 29, 2016 at 0:51

user4910279

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