题目链接:http://www.lightoj.com/volume_showproblem.php?problem=1080 1080 - Binary Simulation PDF (English) problem=1080" style="color:rgb(79,107,114)">Statistics problem=1080" style="color:rgb(79,107,114)">Forum Time Limit:…

1080 - Binary Simulation    PDF (English) Statistics Forum Time Limit: 2 second(s) Memory Limit: 64 MB Given a binary number, we are about to do some operations on the number. Two types of operations can be here. 'I i j'    which means invert the bit…

提高自己的实力, 也为了证明, 开始板刷lightoj,每天题量>=1: 题目的类型会在这边说明,具体见分页博客: SUM=54; 1000 Greetings from LightOJ [简单A+B] 1001 Opposite Task  [简单题] 1002 Country Roads[搜索题] 1003 Drunk[判环] 1004 Monkey Banana Problem [基础DP] 1006 Hex-a-bonacci[记忆化搜索] 1008 Fibsieve`s Fantabu…

  深度学习主机环境配置: Ubuntu16.04+Nvidia GTX 1080+CUDA8.0 发表于2016年07月15号由52nlp 接上文<深度学习主机攒机小记>,这台GTX1080主机准备好之后,就是配置深度学习环境了,这里选择了比较熟悉Ubuntu系统,不过是最新的16.04版本,另外在Nvidia GTX1080的基础上安装相关GPU驱动,外加CUDA8.0,因为都比较新,所以踩了很多坑. 1. 安装Ubuntu16.04 不考虑双系统,直接安装 Ubuntu16.04,从ub…

摘要:这2个单词 还是用英文解释,比较准确.按我的理解:simulation就是模拟,可以做些改变. emulation是仿真,是按照原来的样子进行部署,不可以改变. Yes, the concepts are very different. A simulation is a system that behaves similar to something else, but is implemented in an entirely different way. It provides th…

致谢源代码网址:https://github.com/Tutorgaming/kamtoa-simulation kamtoa simulation学习与示例分析(一) 源码学习与分析是学习ROS,包括RVIZ和Gazebo等必须的过程,大量代码的阅读能够提高加快理解熟练使用ROS Kinetic. 首先,先看文件组织: 一般README中有详细的使用说明,包括安装,使用和示例教程. CMakeLists.txt: # toplevel CMakeLists.txt for a catkin w…

接上文<深度学习主机环境配置: Ubuntu16.04+Nvidia GTX 1080+CUDA8.0>,我们继续来安装 TensorFlow,使其支持GeForce GTX 1080显卡. 1 下载和安装cuDNN cuDNN全称 CUDA Deep Neural Network library,是NVIDIA专门针对深度神经网络设计的一套GPU计算加速库,被广泛用于各种深度学习框架,例如Caffe, TensorFlow, Theano, Torch, CNTK等. The NVIDIA…

1．在主机上插上GPU之后,查看设备: $ nvidia-smi Tue Dec :: +-----------------------------------------------------------------------------+ | NVIDIA-SMI 375.66 Driver Version: 375.66 | |-------------------------------+----------------------+----------------------+ |…

Priority Queue 类似一个Queue,但是按照priority的大小顺序来出队 一般存在两种方式来实施 排序法(ordered),在元素入队时即进行排序,这样插入操作为O(N),但出队为O(1) 不排序法(unordered),元素直接插入到后面,出队时先排序后提取,插入操作为O(1),出队为O(N) 采用二叉树 用队列模拟二叉树,root为a[1],子元素为a[2k]或a[2k+1] 父元素总是比子元素要大,提取max为a[1] 不符合规则的子元素(其value比父元素大)可以不断…

Leetcode之深度优先搜索(DFS)专题-1080. 根到叶路径上的不足节点(Insufficient Nodes in Root to Leaf Paths) 这篇是DFS专题的第一篇,所以我会写下具体的解题步骤和过程,以及我当时的思路,有改进的地方,希望指正,共同进步. 给定一棵二叉树的根 root,请你考虑它所有 从根到叶的路径:从根到任何叶的路径.(所谓一个叶子节点,就是一个没有子节点的节点) 假如通过节点 node 的每种可能的 “根-叶” 路径上值的总和全都小于给定的 limit…

二叉树(Binary Tree)是最简单的树形数据结构,然而却十分精妙.其衍生出各种算法,以致于占据了数据结构的半壁江山.STL中大名顶顶的关联容器--集合(set).映射(map)便是使用二叉树实现.由于篇幅有限,此处仅作一般介绍(如果想要完全了解二叉树以及其衍生出的各种算法,恐怕要写8~10篇). 1)二叉树(Binary Tree) 顾名思义,就是一个节点分出两个节点,称其为左右子节点:每个子节点又可以分出两个子节点,这样递归分叉,其形状很像一颗倒着的树.二叉树限制了每个节点最多有两个子节…

出现场景:当点击"分类"再返回"首页"时,发生error退出   BUG描述:Caused by: java.lang.IllegalArgumentException: Binary XML file line #23: Duplicate id 0x7f0d0054, tag null, or parent id 0xffffffff with another fragment for com.example.sxq123.iljmall.FragmentCat…

题目链接:Balanced Binary Tree | LeetCode OJ Given a binary tree, determine if it is height-balanced. For this problem, a height-balanced binary tree is defined as a binary tree in which the depth of the two subtrees of every node never differ by more tha…

题目链接:Recover Binary Search Tree | LeetCode OJ Two elements of a binary search tree (BST) are swapped by mistake. Recover the tree without changing its structure. Note: A solution using O(n) space is pretty straight forward. Could you devise a constan…

题目链接:Validate Binary Search Tree | LeetCode OJ Given a binary tree, determine if it is a valid binary search tree (BST). Assume a BST is defined as follows: The left subtree of a node contains only nodes with keys less than the node's key. The right…

Sept. 22, 2015 学一道算法题, 经常回顾一下. 第二次重温, 决定增加一些图片, 帮助自己记忆. 在网上找他人的资料, 不如自己动手. 把从底向上树的算法搞通俗一些. 先做一个例子: 9/22/2015 Go over one example to build some muscle memory about this bottom up, O(1) solution to find the root node in subtree function. Sorted List: 1…

Sept. 13, 2015 Spent more than a few hours to work on the leetcode problem, and my favorite blogs about this problems: 1. http://siddontang.gitbooks.io/leetcode-solution/content/tree/construct_binary_tree.html 2.http://blog.csdn.net/linhuanmars/artic…

先来介绍一下线段树. 线段树是一个把线段,或者说一个区间储存在二叉树中.如图所示的就是一棵线段树,它维护一个区间的和. 蓝色数字的是线段树的节点在数组中的位置,它表示的区间已经在图上标出,它的值就是这段区间的和. 比如说线段树1号节点表示[1,5]区间,它的值是13,也就是原数组1号位到5号位所有数字加起来的和. 不难发现线段树的下标有这样的性质: 1. 设一个节点的下号是o,那么它的左子树是o*2,右子树是o*2+1. 2. 线段树的大小是原数组的大小*2-1. 3. 线段树叶节点表示区间的长…

A binary watch has 4 LEDs on the top which represent the hours (0-11), and the 6 LEDs on the bottom represent the minutes (0-59). Each LED represents a zero or one, with the least significant bit on the right. For example, the above binary watch read…

Given a binary tree, find all leaves and then remove those leaves. Then repeat the previous steps until the tree is empty. Example: Given binary tree 1 / \ 2 3 / \ 4 5 Returns [4, 5, 3], [2], [1]. Explanation: 1. Remove the leaves [4, 5, 3] from the…

One way to serialize a binary tree is to use pre-oder traversal. When we encounter a non-null node, we record the node's value. If it is a null node, we record using a sentinel value such as #. _9_ / \ 3 2 / \ / \ 4 1 # 6 / \ / \ / \ # # # # # # For…

Given a binary tree, return the vertical order traversal of its nodes' values. (ie, from top to bottom, column by column). If two nodes are in the same row and column, the order should be from left to right. Examples: Given binary tree [3,9,20,null,n…

Given a binary tree, find the length of the longest consecutive sequence path. The path refers to any sequence of nodes from some starting node to any node in the tree along the parent-child connections. The longest consecutive path need to be from p…

Serialization is the process of converting a data structure or object into a sequence of bits so that it can be stored in a file or memory buffer, or transmitted across a network connection link to be reconstructed later in the same or another comput…

Given a non-empty binary search tree and a target value, find k values in the BST that are closest to the target. Note: Given target value is a floating point. You may assume k is always valid, that is: k ≤ total nodes. You are guaranteed to have onl…

Given a non-empty binary search tree and a target value, find the value in the BST that is closest to the target. Note: Given target value is a floating point. You are guaranteed to have only one unique value in the BST that is closest to the target.…

Given a binary tree, return all root-to-leaf paths. For example, given the following binary tree: 1 / \ 2 3 \ 5 All root-to-leaf paths are: ["1->2->5", "1->3"] 这道题给我们一个二叉树,让我们返回所有根到叶节点的路径,跟之前那道Path Sum II 二叉树路径之和之二很类似,比那道稍微简单一…

Given an array of numbers, verify whether it is the correct preorder traversal sequence of a binary search tree. You may assume each number in the sequence is unique. Follow up: Could you do it using only constant space complexity? 这道题让给了我们一个一维数组,让我们…

Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree. According to the definition of LCA on Wikipedia: “The lowest common ancestor is defined between two nodes v and w as the lowest node in T that has both v and w…

Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST. According to the definition of LCA on Wikipedia: “The lowest common ancestor is defined between two nodes v and w as the lowest node in T that has…