2.6
import java.util.Scanner;
public class Red{
public static void main(String[] args){
Scanner input =new Scanner(System.in);
System.out.println("Enter a number between 0 and 1000: ");
int number=input.nextInt();
int x,y,z,sun;
x=number/100;
y=(number%100)/10;
z=(number%100)%10;
sun=x+y+z;
System.out.println("the sun of the digits is" +sun);
}
}
2.15
import java.util.Scanner;
public class ComputeDistance{
public static void main(String[] args){
double number;
Scanner input =new Scanner(System.in);
System.out.print("Enter x1 and y1:");
double x1 =input.nextDouble();
double y1 =input.nextDouble();
System.out.print("Enter x2 and y2:");
double x2 =input.nextDouble();
double y2 =input.nextDouble();
number =(x2-x1)*(x2-x1)+(y2-y1)*(y2-y1);
double distance =Math.pow(number,0.5);
System.out.println("the distance between the two points is" +distance);
}
}