【程序1】?? 題目：古典問題：有一對兔子，從出生后第3個月起每個月都生一對兔子，小兔子長到第四個月后每個月又生一對兔子，假如兔子都不死，問每個月的兔子總數(shù)為多少？??
1.程序分析：?? 兔子的規(guī)律為數(shù)列1,1,2,3,5,8,13,21.... ?
public?class?exp2{
public?static?void?main(String args[]){
int?i=0;
for(i=1;i<=20;i++)
System.out.println(f(i));
}
public?static?int?f(int?x)
{
if(x==1 || x==2)
return?1;
else
return?f(x-1)+f(x-2);
}
}
或
public?class?exp2{
public?static?void?main(String args[]){
int?i=0;
math mymath = new?math();
for(i=1;i<=20;i++)
System.out.println(mymath.f(i));
}
}
classmatht
public?int?f(int?x)
{
if(x==1 || x==2)
return?1;
else
return?f(x-1)+f(x-2)
加油聯(lián)系我?
