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