Read the question, write Java on the right, then Run or Check.
QuestionHint and solution stay closed until you open them
Read a line; count digit characters.
Examples
Input
ab12c3
Output
3
Hint
- Character.isDigit
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();
int c = 0;
for (int i = 0; i < line.length(); i++) if (Character.isDigit(line.charAt(i))) c++;
System.out.println(c);
}
}
Main.javaJava 21 · javac · Ctrl + Enter runs
ResultIdle
Run to see output. Check grades the tests.