摘要：题目： Given a binary tree containing digits from0-9only, each root-to-leaf path could represent a number. An example is the root-to-leaf path1->2->3whic 阅读全文

摘要：题目： Reverse a linked list from position m to n. Do it in-place and in one-pass. For example: Given1->2->3->4->5->NULL, m = 2 and n = 4, For example: G 阅读全文

摘要：题目： A linked list is given such that each node contains an additional random pointer which could point to any node in the list or null. Return a deep 阅读全文

摘要：题目： Given a singly linked list L: L 0→L 1→…→L n-1→L n,reorder it to: L 0→L n →L 1→L n-1→L 2→L n-2→…You must do this in-place without altering the node 阅读全文