Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST. 這題的關鍵是能找出當前鏈表的中間節點,然后再遞歸左右的子鏈表,開始的時候程序 ...
題目: Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST. 題解: 之前做過一道是從sorted array轉換到BinarySearchTree的,方法還是一樣二分法。但是構造樹的方法不是由頂至下了,是要由低至上的建立。 代碼如 ...
2014-08-01 04:25 1 2781 推薦指數:
Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST. 這題的關鍵是能找出當前鏈表的中間節點,然后再遞歸左右的子鏈表,開始的時候程序 ...
原題地址:http://oj.leetcode.com/problems/convert-sorted-list-to-binary-search-tree/ 題意:將一條排序好的鏈表轉換為二叉查找樹,二叉查找樹需要平衡。 解題思路:兩個思路:一,可以使用快慢指針來找到中間的那個節點 ...
題目: Given an array where elements are sorted in ascending order, convert it to a height balanced BST. 題解: 先復習下什么是二叉搜索樹(引自Wikipedia): 二叉查找樹(Binary ...
看起來很難,但是仔細想一下,實質就是二叉樹的中序遍歷的問題,中序遍歷有遞歸和非遞歸(至少兩種寫法)。 遞歸: 非遞歸 Divide a ...
原題地址:http://oj.leetcode.com/problems/convert-sorted-array-to-binary-search-tree/ 題意:將一個排序好的數組轉換為一顆二叉查找樹,這顆二叉查找樹要求是平衡的。 解題思路:由於要求二叉查找樹是平衡的。所以我們可以選在數 ...
Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST. For this problem, a height-balanced ...
Convert a BST to a sorted circular doubly-linked list in-place. Think of the left and right pointers as synonymous to the previous and next ...
Given an array where elements are sorted in ascending order, convert it to a height balanced BST. For this problem, a height-balanced binary tree ...