#include <stdio.h>
#include <math.h>
void main(){
	int a,b,i,k,s=1,t,x,y;
	scanf("%d %d",&a,&b);
	while(a!=b){
		s=1;
		if(a>b){x=b;y=a;}
		else if(a<b){x=a;y=b;}
		for(i=x;i<=y;i++){
			k=i;
			t=1;
			while(k!=1){
				if(k%2==0){ k=k/2; t++;}
				else{
					k=3*k+1;
					t++;}
			}
			if(t>s) s=t;
		}
		printf("%d %d %d\n",a,b,s);
		scanf("%d %d",&a,&b);
	}
}

• 输入结束判断有问题,还有没有考虑A=B的情况! (436) davydc 2005-12-28 13:10:43