Introduction - If you have any usage issues, please Google them yourself
Initialization cycle double linked list H Turn the tail interpolation into the A, B, C, D, e elements The output cycle double chain H The output cycle double linked list length H The third element of the output cycle double linked list H The output element a position In the fourth elements into the f element position The output cycle double chain H The output cycle double chain H Remove the third element circular doubly linked list H The output cycle double chain H