Read the question, write Java on the right, then Run or Check.
QuestionHint and solution stay closed until you open them
Read one line; print how many whitespace-separated words it has.
Examples
Input
hello world
Output
2
Input
one
Output
1
Hint
- line.trim().isEmpty() ? 0 : line.trim().split("\\s+").length
Show correct code
Peek only after you have tried. You can still Check your own version.
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
String line = in.nextLine().trim();
System.out.println(line.isEmpty() ? 0 : line.split("\\s+").length);
}
}
Main.javaJava 21 · javac · Ctrl + Enter runs
ResultIdle
Run to see output. Check grades the tests.