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  • binary tree+tree order2022-08-11 22:30:11

    二叉树的前中序确定后序:http://acm.hdu.edu.cn/showproblem.php?pid=1710 二叉树的后中序确定层序:https://pintia.cn/problem-sets/994805342720868352/problems/994805485033603072 二叉树的前中序确定后序变形:https://pintia.cn/problem-sets/994805342720868352/problems/99480

  • 查找算法binary_search2022-07-31 13:31:49

    #include <iostream> #include <vector> #include <algorithm> using namespace std; class Print { public: void operator()(int i) { cout << i << endl; } }; int main() { vector<int> v; for(int i = 0; i

  • [LeetCode] 1161. Maximum Level Sum of a Binary Tree2022-07-31 06:31:07

    Given the root of a binary tree, the level of its root is 1, the level of its children is 2, and so on. Return the smallest level x such that the sum of all the values of nodes at level x is maximal. Example 1: Input: root = [1,7,0,7,-8,null,null]

  • LeetCode 108 Convert Sorted Array to Binary Search Tree DFS2022-07-29 06:31:26

    Given an integer array nums where the elements are sorted in ascending order, convert it to a height-balanced binary search tree. A height-balanced binary tree is a binary tree in which the depth of the two subtrees of every node never differs by more tha

  • LeetCode 103 Binary Tree Zigzag Level Order Traversal 双端队列 Deque2022-07-28 04:33:41

    Given the root of a binary tree, return the zigzag level order traversal of its nodes' values. (i.e., from left to right, then right to left for the next level and alternate between). Solution 由于是 \(zigzag\) 的形式,刚开始的思路是用 \(stack\) 来维护反序,但是

  • [LeetCode] 919. Complete Binary Tree Inserter2022-07-26 01:32:00

    A complete binary tree is a binary tree in which every level, except possibly the last, is completely filled, and all nodes are as far left as possible. Design an algorithm to insert a new node to a complete binary tree keeping it complete after the inser

  • LeetCode 102 Binary Tree Level Order Traversal 层序BFS2022-07-24 06:00:14

    Given the root of a binary tree, return the level order traversal of its nodes' values. (i.e., from left to right, level by level). Solution 用 \(BFS\) 即可,每次将该层的节点 \(pop\), 然后 \(push\) 其子数的节点 点击查看代码 /** * Definition for a binary tree n

  • Vector 35 Binary Ninja for Mac(反编译器二进制分析平台)2022-07-19 16:32:57

    Binary Ninja是一个交互式反汇编器、反编译器和二进制分析平台,Vector 35 为多种架构的反汇编提供第一方支持,包括 x86、x86-64、ARMv7(带有 Thumb2)、ARMv8 (AArch64)、PowerPC、6502、Z80 和 MIps,我们的反编译器输出到 C 和 BNIL,并且可以按需切换。非常适用于在 Windows 上运行的逆

  • LeetCode 226 Invert Binary Tree DFS2022-07-19 04:31:07

    Given the root of a binary tree, invert the tree, and return its root. Solution: 直接使用 \(DFS\) 进行递归即可: 点击查看代码 /** * Definition for a binary tree node. * struct TreeNode { * int val; * TreeNode *left; * TreeNode *right; * T

  • [Google] LeetCode 366 Find Leaves of Binary Tree 思维+DFS2022-07-19 03:02:40

    Given the root of a binary tree, collect a tree's nodes as if you were doing this: Collect all the leaf nodes. Remove all the leaf nodes. Repeat until the tree is empty. Solution 给定一个二叉树,每次输出叶子节点,然后去除叶子节点,不断重复直到根节点也被删除。这道

  • LeetCode 704 Binary Search 模板2022-07-16 04:00:08

    Given an array of integers nums which is sorted in ascending order, and an integer target, write a function to search target in nums. If target exists, then return its index. Otherwise, return \(-1\). You must write an algorithm with \(O(\log n)\) ru

  • MFC二叉树绘制2022-07-15 14:34:43

    MFC二叉树绘制 二叉树问题:提供DEMO程序,已具备功能包括:按先序输入序列生成二叉树,输出二叉树先序、中序、后序遍历序列。 在此基础上完成如下任务: (1) 实现二叉树的分层遍历,输出遍历序列。 (2) 对二叉树进行镜像操作。 (3) 绘制二叉树。 (4) 给出一个结点到另一个结点的最短路径

  • 树结构Tree2022-07-14 14:33:40

    树结构 平衡顺序二叉树 通过平衡顺序二叉树查数据的时候,也就等同于二分查找的操作 Binary Search 2,3树 二三树 二三树有 node2 和 node3 两种节点,树的规则如图

  • cf1370 E. Binary Subsequence Rotation2022-07-08 20:32:57

    题意: 给定等长的两个01串 \(a,b\),每次操作可选 \(a\) 的一个子列进行 “右移一位” 操作。问把 \(a\) 变成 \(b\) 至少要几次操作 “右移一位” 操作:\(a_1a_2a_3a_4a_5\to a_5a_1a_2a_3a_4\) 思路: 若0的总数和1的总数不同则无解 被操作的子列满足:\(a_i\neq b_i\),且相邻的 \(a_i\)

  • [LeetCode] 1650. Lowest Common Ancestor of a Binary Tree III2022-07-08 07:31:42

    Given two nodes of a binary tree p and q, return their lowest common ancestor (LCA). Each node will have a reference to its parent node. The definition for Node is below: class Node { public int val; public Node left; public Node right;

  • odoo的Binary类型的的图片展示2022-06-30 15:34:00

    1.解码使用io.BytesIO使image对象对去ba icon = Image.open(io.BytesIO(base64.b64decode(self.qr_code))) 读取二进制的文件的方法2.编码,读取图片并编码,并返回给Binary,并显示图片with open(save_image_path, 'rb') as f: res = f.read() self.result_image = base64.b6

  • You are not using binary logging2022-06-30 09:38:31

    Error Code : 1381You are not using binary logging show variables like 'log_bin'        在mysqld配置项下面加上log_bin=mysql_bin [mysqld] log_bin = mysql_bin   重启数据库    

  • Django filter operators2022-06-30 09:36:05

    operators = { 'exact': '= %s', 'iexact': 'LIKE %s', 'contains': 'LIKE BINARY %s', 'icontains': 'LIKE %s', 'regex': 'REGE

  • [转]docker images 导入和导出2022-06-29 11:33:40

      原文:https://www.cnblogs.com/yanling-coder/p/11715486.html ------------- docker images 导入和导出   docker images 导入和导出   目录 docker images 导入和导出 1、前言 2、docker image 的保存 3、docker image 的导入 4、打上目标环境的tag 5、将本地的image上

  • LeetCode98. Validate Binary Search Tree2022-06-27 22:05:39

    题意 判断一共二叉搜索数是否合法 解法 中序遍历, 判断是否为升序序列 代码 long long pre = LLONG_MIN; bool isValidBST(TreeNode* root) { if (root == nullptr) return true; if (!isValidBST(root->left)) return false; if (root->val <= pre) return fals

  • 数据结构(13) - 折半排序(二分排序)2022-06-25 18:00:24

    折半插入排序(binary insertion sort)是对插入排序算法的一种改进,由于排序算法过程中,就是不断的依次将元素插入前面已排好序的序列中。由于前半部分为已排好序的数列,这样我们不用按顺序依次寻找插入点,可以采用折半查找的方法来加快寻找插入点的速度。 1 /** 2 * C data structur

  • tensorflow中使用Adam出现name ‘Adam‘ is not defined【转】2022-06-24 22:01:11

    转自Colab中使用Adam出现name ‘Adam‘ is not defined 错误场景 在本地运行正常,之前在tensorflow上运行也正常;之后重新运行colab上的代码,出现如下错误: 尝试安装其他包,并查询Adam所在库,没有解决问题 错误原因及解决方案 错因:tensorflow自带的Keras库已经更新,无法按照原来的方式来

  • [IDEA SCALA] Failed to locate the winutils binary in the hadoop binary path2022-06-22 23:36:57

    运行了一个Scala程序发现报错    发现自己一直没有配置本地hadoop的环境   1.编辑系统环境变量添加HADOOP_HOME(hadoop压缩包的解压路径)   2.接着在Path添加一行   3.配置好之后再测试    4.在 IDEA 中配置 Run Configuration,添加 HADOOP_HOME 变量       还是报错,

  • FTP 两种传输模式 Binary 和 ASCII 的区别2022-06-20 01:34:27

    https://blog.csdn.net/liaowenxiong/article/details/115534121 常规作法 一般来说,我们最好都用 Binary 模式来传输资源,这样可以保证不出错。如果有文本格式转换的问题,即unix格式的文本和dos格式的文本之间的转换,有很多工具可以做的,不要在ftp传输的时候冒险,尤其是你如果对这些东

  • mysql emoji搜索2022-06-16 11:35:29

    and BINARY lower(content) like lower(#{keyword}) binary:二进制比较,确保emoji搜索正确 lower():将字段和搜索关键字转成小写比较 “

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