求一些java程序设计的考试编写程序题答案,求救啊

1：import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int x = sc.nextInt(); int y = sc.nextInt(); int z = x * y; for(int i = 1;i <= z;i++){ if(x % i == 0 && y % i == 0){ System.out.print(i + "t"); } } } } 2：import java.util.Arrays; import java.util.Scanner; public class Main　{ public static void main(String[] args) { Scanner sc = new Scanner(System.in); float f[] = new float[10]; for(int i = 0;i < 10;i++){ f[i] = sc.nextFloat(); } Arrays.sort(f); for(int i = 0;i < f.length;i++){ System.out.print(f[i] + "t"); } } } 3： public class Point { double x; double y; public Point(){ x = 0.0; y = 0.0; } public static void main(String[] args) { ／／主方法里面的东西你自己写。还有什么要求没实现的，你再追问 } public double distance(Point point1,Point point2){ double result = 0; result = Math.sqrt((point1.x-point2.x)*(point1.x-point2.x) +(point1.y-point2.y)*(point1.y-point2.y)) ; return result; } @Override public String toString() { return "(" + x + "," + y + ")"; } }