此解可AC （C语言代码）

解题思路:

注意事项:

参考代码:

#include<stdio.h>

int main()

{

int i, j, k, count = 1, max = 0, t;

while (scanf("%d %d", &i, &j) != EOF)

{

printf("%d %d ", i, j);

max = 0;

if (i > j)

{

t = i;

i = j;

j = t;

}

for (k = i; k <= j; k++)

{

count = 1;

t = k;

while (t > 1)

{

if (t % 2 == 0)

t /= 2;

else

t = 3 * t + 1;

count++;

}

if (max < count)

max = count;

}

printf("%d\n", max);

}

return 0;

}