Split a string, two words at a time

Question

I have

String input = "one two three four five six seven";

Is there a regex that works with String.split() to grab (up to) two words at a time, such that:

String[] pairs = input.split("some regex");
System.out.println(Arrays.toString(pairs));

results in this:

[one two,two three, three four,four five,five six,six seven]

score 5 · Answer 1 · answered Dec 08 '13 at 07:41

5

String[] elements = input.split(" ");
List<String> pairs = new ArrayList<>();
for (int i = 0; i < elements.length - 1; i++) {
    pairs.add(elements[i] + " " + elements[i + 1]);
}

answered Dec 08 '13 at 07:41

JB Nizet

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score 2 · Answer 2 · answered Dec 08 '13 at 07:42

2

No. With String.split(), the things you get out can't overlap.

e.g. you can get: "one two three four" -> {"one","two","three","four"}, but not {"one two","two three", "three four"}

answered Dec 08 '13 at 07:42

jgon

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But JB Nizet's answer will certainly solve your problem – jgon Dec 08 '13 at 07:42

Split a string, two words at a time

2 Answers2