题解 1095: The 3n + 1 problem

解题思路:

注意事项:还得先比较输入的两个数的大小！！！

参考代码

#include<stdio.h>
int main()
{
    int a,b,m,n,j,temp;
    int sum=1;
    int k=0;
    while(~scanf("%d%d",&m,&n))
    {
        a=m;
        b=n;
        if(m>n)
        {
            temp=a;
            a=b;
            b=temp;
        }
        k=0;
        for(int i=a;i<b;i++)
        {
            j=i;
            while(j!=1)
            {
                if(j%2==0)
                {
                    j=j/2;
                    sum++;
                }
                else 
                {
                    j=j*3+1;
                    sum++;
                }
                if(sum>k)
                {
                    k=sum;
                }
            }
            sum=1;   
        }
        printf("%d %d %d\n",m,n,k);
    }
    
    
    return 0;
}