java×÷Òµ03

package homework03;
import java.util.Scanner;
/*
* ±àдһ¸öÀ࣬¸ÃÀàÓÐÒ»¸ö·½·¨
* public int f£¨int a£¬int b£©{
*
* }
* È»ºó±àдһ¸ö¸ÃÀàµÄ×ÓÀ࣬ҪÇóÖØд·½·¨f()£¬¶øÇÒÖØдµÄ·½·¨½«·µ»ØÁ½¸öÕûÊýµÄ×îС¹«±¶Êý¡£ÒªÇó£º
* ÔÚÖØдµÄ·½·¨µÄ·½·¨ÌåÖÐÊ×Ïȵ÷Óñ»Òþ²ØµÄ·½·¨·µ»ØaºÍbµÄ×î´ó¹«Ô¼Êým,È»ºó½«a*b/m·µ»Ø£»ÔÚÓ¦ÓóÌÐòµÄ
* Ö÷ÀàÖзֱðʹÓø¸ÀàºÍ×ÓÀà´´½¨¶ÔÏ󣬲¢·Ö±ðµ÷Ó÷½·¨f()¼ÆËãÁ½¸öÕýÕûÊýµÄ×î´ó¹«Ô¼ÊýºÍ×îС¹«±¶Êý¡£
*/
class Father{
public int f(int a,int b){ //·µ»Ø×î´ó¹«Ô¼Êý
int r;
do {
if (a < b) {
int t = a;
a = b;
b = t;
}
r = a % b;
a= b;
b = r;
} while (r != 0);
return a;
}
}
class Son extends Father{
public int f(int a,int b){ //ÖØд¸¸ÀຯÊýpublic int f(int a,int b);·µ»Ø×îС¹«±¶Êý¡£
return a*b/super.f(a, b);
}
}
public class ch05_1 {
public static void main(String[] args) {
Scanner s = new Scanner(System.in);
System.out.println("ÇëÊäÈëµÚÒ»¸öÕûÊý : ");
int a = s.nextInt();
System.out.println("ÇëÊäÈëµÚ¶þ¸öÕûÊý : ");
int b = s.nextInt();
System.out.println("Óɸ¸ÀàµÄ·½·¨¼ÆËãµÄ×î´ó¹«Ô¼Êý£º"+new Father().f(a,b));
System.out.println("ÓÉ×ÓÀàÖØдµÄ·½·¨¼ÆËãµÄ×îС¹«±¶Êý£º"+new Son().f(a, b));
}
}

ÔËÐÐʾÀý£º
ÇëÊäÈëµÚÒ»¸öÕûÊý :
12
ÇëÊäÈëµÚ¶þ¸öÕûÊý :
9
Óɸ¸ÀàµÄ·½·¨¼ÆËãµÄ×î´ó¹«Ô¼Êý£º3
ÓÉ×ÓÀàÖØдµÄ·½·¨¼ÆËãµÄ×îС¹«±¶Êý£º36
package homework03;
/*
* Ê×Ïȱàдһ¸ö³éÏóÀ࣬ҪÇó¸ÃÀàÓÐÈçÏÂ3¸ö³éÏó·½·¨£º
* public abstract void f(int x);
* public abstract void g(int x,int y);
* public abstract double h(double x);
* È»ºó·Ö±ð¸ø³ö¸ÃÀàµÄ3¸ö×ÓÀà¡£ÒªÇó£ºÔÚÓ¦ÓóÌÐòµÄÖ÷ÀàÖÐʹÓÃÕâЩ×ÓÀà´´½¨¶ÔÏó£¬È»ºóÈÃËüÃǵÄ
* ÉÏתÐͶÔÏóµ÷Ó÷½·¨£ºf(),g()ºÍh()¡£
*/
abstract class F{
public abstract void f(int x);
public abstract void g(int x,int y);
public abstract double h(double x);
}
class s1 extends F{
public void f(int x) {
System.out.println("×ÓÀà1µÄfº¯Êý ´òÓ¡²ÎÊý£º"+x);
}
public void g(int x, int y) {
System.out.println("×ÓÀà1µÄgº¯Êý ´òÓ¡²ÎÊý(int)x=£º"+x+" y="+y);
}