https://discuss.leetcode.com/topic/65596/python-o-nlogn-short-solution-with-explanation
这里讨论了一种方法,可以看一下:https://discuss.leetcode.com/topic/4659/c-in-order-traversal-and-please-do-not-rely-on-buggy-int_max-int_min-solutions-any-more
https://leetcode.com/problems/recover-binary-search-tree/discuss/32535/No-Fancy-Algorithm-just-Simple-and-Powerful-In-Order-Traversal 描述 解析 解决方法是利用中序遍历找顺序不对的两个点,最后swap一下就好。 因为这中间的错误是两个点进行了交换,所以就是大的跑前面来了,小的跑后面去了。 所以在中序...
思路 下面是看到的一个大佬的思路讲解,非常清楚了,原文在:https://leetcode.com/problems/validate-binary-search-tree/discuss/158094/Python-or-Min-Max-tmPython | 给你把Min Max来由说透 - 公瑾™ > 类型:DFS遍历> Time Complexity O(n)> Space Complexity O(h) LC里面各种花式炫技巧,炫答案,但没看到...
看了Discuss,也上网搜了一下,发现空间O(1)可以用 Morris遍历的方法。单独写了一篇博客,方法介绍如下: 1. AI检测代码解析 javascript:void(0) 1. AI检测代码解析 下面是leetcode这道题目我的解答。没有使用O(1)空间复杂度,使用了O(n)空间复杂度。 还用到了Java里面 Arrays.sort方法,也需要注意toArray函数的...
It's also a leetcode problem.The in-order traversal gives you an ordering of the elements. You can reconstruct the original binary tree by adding elements to a binary search tree in the pre-order traversal order, with "<=>" determined by the in-order traversal, instead of using <, >,...
Leetcode - Unique Binary Search Trees II My code: My test result: 这道题目也没做出来。但是看了解题思路后,觉得太强大了。这么短的十... Richardo92阅读 765评论 0赞 1 [Leetcode95]Unique Binary Search Trees II 和对递归怎... 题目描述 Given an integer n, generate all structurally unique......
My code: privateintend=0;publicTreeNodeformBST(int[]nums){if(nums==null||nums.length==0)returnnull;end=nums.length-1;returnddfs(nums,Integer.MIN_VALUE,Integer.MAX_VALUE);}privateTreeNodeddfs(int[]nums,intmin,intmax){if(end<0)returnnull;if(nums[end]>min&&nums[end]<max){TreeNoderoot...
Can you solve this real interview question? Shortest Path in Binary Matrix - Given an n x n binary matrix grid, return the length of the shortest clear path in the matrix. If there is no clear path, return -1. A clear path in a binary matrix is a path f
Can you solve this real interview question? Median of Two Sorted Arrays - Given two sorted arrays nums1 and nums2 of size m and n respectively, return the median of the two sorted arrays. The overall run time complexity should be O(log (m+n)). Examp