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 (≤).以及正整数 K (≤),即要求反转的子链结点的个数.结点的地址是 5 位非负整数,NULL 地址用 − 表示. 接下来有
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
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
1086 Tree Traversals Again (25分) An inorder binary tree traversal can be implemented in a non-recursive way with a stack. For example, suppose that when a 6-node binary tree (with the keys numbered from 1 to 6) is traversed, the stack operations ar
1032 Sharing (25)(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 "
题目地址 https://pta.patest.cn/pta/test/16/exam/4/question/679 5-17 Hashing (25分) The task of this problem is simple: insert a sequence of distinct positive integers into a hash table, and output the positions of the input numbers. The hash function is
题目地址 https://pta.patest.cn/pta/test/16/exam/4/question/675 5-13 Insert or Merge (25分) According to Wikipedia: Insertion sort iterates, consuming one input element each repetition, and growing a sorted output list. Each iteration, insertion sort rem