LL python op

1 --> 2 --> 3 --> 4 --> 5
1 --> 2 --> 3 --> 4 --> 5 --> 12 --> 13 --> 3
8
3
5
True
1 --> 3 --> 4 --> 5 --> 13 --> 3
13
1
True
31 --> 1 --> 3 --> 4 --> 5 --> 13 --> 3
31
1 --> 3 --> 4 --> 5 --> 13 --> 3
1 --> 3 --> 4 --> 5 --> 13 --> 3
Empty List!!!
1,3,4,5,13,3
2
[1, 3, 4, 5, 13, 3]
{1, 3, 4, 5, 13}
3 --> 13 --> 5 --> 4 --> 3 --> 1
1 --> 3 --> 3 --> 4 --> 5 --> 13
1 --> 3 --> 3 --> 4 --> 5 --> 13