/* struct ListNode { int val; struct ListNode *next; ListNode(int x) : val(x), next(NULL) { } };*/ class Solution { public: ListNode* FindKthToTail(ListNode* pListHead, unsigned int k) { if (!pListHead||k<=0) { return nullptr; } auto slow=pListHead; auto fast =pListHead; while (k--) { if (fast) {...