/*程序员龚猛，求整数各个位上的和*/
import java.util.Scanner;
public class Helloworld
{
public static void main(String[] args)
{
Scanner input=new Scanner(System.in);
System.out.print("Enter a number 0 and 1000 :");
int number =input.nextInt();
int bit=number%10;
number=number/10;
int ten=number%10;
number=number/10;
int kil=number%10;
System.out.println("The sum of the digits is "+(bit+ten+kil))
}
}
/*程序员龚猛，两点的距离*/
package HelloWorld;
import java.util.Scanner;
public class HelloWorld {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.print("输入x1和y1:");
double x1 =input.nextDouble();
double y1 =input.nextDouble();
System.out.print("输入x2和y2:");
double x2 =input.nextDouble();
double y2 =input.nextDouble();
double x =Math.pow((x2 - x1),2);
double y =Math.pow((y2 - y1),2);
System.out.println("两个点之间的距离是："+ Math.pow((x+y),0.5));
}
}