1025 反转链表 (25分) 给定一个常数 K 以及一个单链表 L,请编写程序将 L 中每 K 个结点反转.例如:给定 L 为 1→2→3→4→5→6,K 为 3,则输出应该为 3→2→1→6→5→4:如果 K 为 4,则输出应该为 4→3→2→1→5→6,即最后不到 K 个元素不反转. 输入格式: 每个输入包含 1 个测试用例.每个测试用例第 1 行给出第 1 个结点的地址.结点总个数正整数 N (≤105 ).以及正整数 K (≤N),即要求反转的子链结点的个数.结点的地址是 5 位非…
7-2 Block Reversing (25分) Given a singly linked list L. Let us consider every K nodes as a block (if there are less than K nodes at the end of the list, the rest of the nodes are still considered as a block). Your job is to reverse all the blocks i…
1020 Tree Traversals (25分) Suppose that all the keys in a binary tree are distinct positive integers. Given the postorder and inorder traversal sequences, you are supposed to output the level order traversal sequence of the corresponding binary tre…
1074 Reversing Linked List (25 分) Given a constant K and a singly linked list L, you are supposed to reverse the links of every K elements on L. For example, given L being 1→2→3→4→5→6, if K=3, then you must output 3→2→1→6→5→4; if K=4, you must outp…
1052 Linked List Sorting (25 分) A linked list consists of a series of structures, which are not necessarily adjacent in memory. We assume that each structure contains an integer key and a Next pointer to the next structure. Now given a linked list,…
1043 Is It a Binary Search Tree (25 分) A Binary Search Tree (BST) is recursively defined as a binary tree which has the following properties: The left subtree of a node contains only nodes with keys less than the node's key. The right subtree of a…
1032 Sharing (25 分) To store English words, one method is to use linked lists and store a word letter by letter. To save some space, we may let the words share the same sublist if they share the same suffix. For example, loading and being are store…