CODEWITHSUNDEEP
javaarrayslambda
Berry
Berry

Reputation: 2308

Is it possible to convert a string to an int[] using only lambda expressions?

I was thinking of converting this String: 1 2 3 4 5 6 to an int[] using only lambda expressions. I was thinking of something along the lines of

int[] x = Arrays.asList(scan.nextLine().split(" ")).stream.forEach(it -> Integer.parseInt(it)); but this is syntactically invalid.

Upvotes: 3

Views: 694

Answers (2)

Jason
Jason

Reputation: 11822

If you don't mind the result being an Integer[]:

String s = "1 2 3 4 5";
int[] x = Arrays.stream(s.split(" "))
        .mapToInt(Integer::parseInt)
        .toArray();

Upvotes: 1

sprinter
sprinter

Reputation: 27976

Just a couple of small improvement on @Jason's answer to remove the conversion to list and return an int[] rather than Integer[]:

int[] result = Pattern.compile(" ").splitAsStream("1 2 3 4 5")
    .mapToInt(Integer::parseInt)
    .toArray();

Upvotes: 7

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