简单的鸡兔同笼问题,算法没错,能运行,就是运行时会出问题,老师在判断的地方出错,求大神指点,不胜感激!import java.util.*;
public class ChickenAndRabbit {
int head=0;
int leg=0;
int temp=0;
public void Head(){
//判断头的个数是否小于零
if(head<=0){
Scanner sc=new Scanner(System.in);
System.out.print("头的个数输入有误,应为正整数,请输入头的个数:");
head=sc.nextInt();
}
}
public void Leg(){
//判断腿的个数是否为奇数
if(leg%2==1){
Scanner cs=new Scanner(System.in);
System.out.print("输入的脚的个数有误,应输入偶数,请输入脚的个数:");
leg=cs.nextInt();
}
//判断腿的个数是否小于零
if(leg<=0){
Scanner cs=new Scanner(System.in);
System.out.print("脚的个数输入有误,应为正偶数,请输入脚的个数:");
leg=cs.nextInt();
}
if(leg<head){
Scanner cs=new Scanner(System.in);
System.out.print("脚的个数输入有误,应大于头的个数,请输入脚的个数:");
leg=cs.nextInt();
}
}
public static void main(String[] args) {
int chicken;
int rabbit;
int head;
int leg;
System.out.print("请输入头的个数:");
Scanner sc=new Scanner(System.in);
head=sc.nextInt();
ChickenAndRabbit h=new ChickenAndRabbit();
h.Head();
System.out.print("请输入脚的个数:");
Scanner cs=new Scanner(System.in);
leg=cs.nextInt();
ChickenAndRabbit l=new ChickenAndRabbit();
l.Leg();
//引入Head方法判断
//引入Leg方法判断
//计算语句
rabbit=(leg-2*head)/2;
chicken=head-rabbit;
System.out.println("鸡的个数是:"+chicken);
System.out.println("兔的个数是:"+rabbit);
}
}
public class ChickenAndRabbit {
int head=0;
int leg=0;
int temp=0;
public void Head(){
//判断头的个数是否小于零
if(head<=0){
Scanner sc=new Scanner(System.in);
System.out.print("头的个数输入有误,应为正整数,请输入头的个数:");
head=sc.nextInt();
}
}
public void Leg(){
//判断腿的个数是否为奇数
if(leg%2==1){
Scanner cs=new Scanner(System.in);
System.out.print("输入的脚的个数有误,应输入偶数,请输入脚的个数:");
leg=cs.nextInt();
}
//判断腿的个数是否小于零
if(leg<=0){
Scanner cs=new Scanner(System.in);
System.out.print("脚的个数输入有误,应为正偶数,请输入脚的个数:");
leg=cs.nextInt();
}
if(leg<head){
Scanner cs=new Scanner(System.in);
System.out.print("脚的个数输入有误,应大于头的个数,请输入脚的个数:");
leg=cs.nextInt();
}
}
public static void main(String[] args) {
int chicken;
int rabbit;
int head;
int leg;
System.out.print("请输入头的个数:");
Scanner sc=new Scanner(System.in);
head=sc.nextInt();
ChickenAndRabbit h=new ChickenAndRabbit();
h.Head();
System.out.print("请输入脚的个数:");
Scanner cs=new Scanner(System.in);
leg=cs.nextInt();
ChickenAndRabbit l=new ChickenAndRabbit();
l.Leg();
//引入Head方法判断
//引入Leg方法判断
//计算语句
rabbit=(leg-2*head)/2;
chicken=head-rabbit;
System.out.println("鸡的个数是:"+chicken);
System.out.println("兔的个数是:"+rabbit);
}
}
public class ChickenAndRabbit
{
int head=0;
int leg=0;
int temp=0;
public void Head()
{
//判断头的个数是否小于零
if(head<=0)
{
Scanner sc=new Scanner(System.in);
System.out.print("头的个数输入有误,应为正整数,请输入头的个数:");
head=sc.nextInt();
}
} public void Leg()
{
//判断腿的个数是否为奇数
if(leg%2==1)
{
Scanner cs=new Scanner(System.in);
System.out.print("输入的脚的个数有误,应输入偶数,请输入脚的个数:");
leg=cs.nextInt();
}
//判断腿的个数是否小于零
if(leg<=0)
{
Scanner cs=new Scanner(System.in);
System.out.print("脚的个数输入有误,应为正偶数,请输入脚的个数:");
leg=cs.nextInt();
}
if(leg<2*head) //脚数至少得是头的2倍。
{
Scanner cs=new Scanner(System.in);
System.out.print("脚的个数输入有误,应大于头的个数的2倍,请输入脚的个数:");
leg=cs.nextInt();
}
} public static void main(String[] args)
{
int chicken;
int rabbit;
int head;
int leg;
System.out.print("请输入头的个数:");
Scanner sc=new Scanner(System.in);
head=sc.nextInt();
ChickenAndRabbit h=new ChickenAndRabbit();
h.head=head; //把此处main方法的head 赋值给对象h.
h.Head(); //调用对象的方法判断。
head=h.head; //合格后取出敷给main方法变量head.
System.out.print("请输入脚的个数:");
Scanner cs=new Scanner(System.in);
leg=cs.nextInt();
//ChickenAndRabbit l=new ChickenAndRabbit(); //已经有了对象了,不要再建了。都用h 就行。
h.leg=leg; //原理同上head.
h.Leg();
leg=h.leg;
//引入Head方法判断
//引入Leg方法判断
//计算语句
rabbit=(leg-2*head)/2;
chicken=head-rabbit;
System.out.println("鸡的个数是:"+chicken);
System.out.println("兔的个数是:"+rabbit);
}
}