Question

Hello I have a question about Java.

example

So when you put “sum 1 2 3” in console, you do not seperate those. Need a space between sum 1, 2 in the console.

What is Sum?

sum 1 2 3

6 (answer)

sum 123456

21

sum 7 4 2

13

public static void main (String[] args) {

System.out.Println(“What is Sum?”);

String a=“”;

a = scnr.nextLine();

String[] b = a.split(“”);

if(b[0].equals(“sum”) {

}

I don’t know how to make code for the sum. Please help me by above code.

Answer 1

//TestCode.java
import java.util.Scanner;
public class TestCode {
    public static void main(String[] args){
        Scanner scnr = new Scanner(System.in);
        System.out.println("What is Sum?");
        String a="";
        a = scnr.nextLine();
        int sum = 0;
        char ch;
        for(int i = 0;i<a.length();i++){
            ch = a.charAt(i);
            if(ch>='0' && ch<='9'){
                sum += (ch-'0');
            }
        }
        System.out.println(sum);
    }
}