Introduction - If you have any usage issues, please Google them yourself
Given a single linked list with a header node, node structure, assuming that the list gives only the head pointer list. On the premise of not changing the list, please design a possible and efficient algorithm, the penultimate K position on the search list nodes (k is a positive integer). If the search is successful, the data domain algorithm for the output of the node values, and returns 1 otherwise, only to return 0.