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DFS/BFS-A - Red and Black
A - Red and Black There is a rectangular room, covered with square tiles. Each tile is colored either red or black. A man is standing on a black tile. ...
分类:其他好文   时间:2020-01-23 13:54:42    阅读次数:86
用于 ExpressionAnimations 动画模型的表达式构建器
ExpressionBuilder https://github.com/Drutol/MALClient/tree/mal-alternative-api/ExpressionBuilder Welcome to the ExpressionBuilder classes! The Express ...
分类:其他好文   时间:2020-01-22 18:34:25    阅读次数:96
[XState] Invoking a Promise for Asynchronous State Transitions in XState
Unbeknownst to many, promises are state machines. They exist in either an idle, pending, resolved or rejected state. Because they can be modeled as st ...
分类:其他好文   时间:2020-01-21 18:32:33    阅读次数:82
*Unique Paths
Unique Paths A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below). The robot can only move either down or r ...
分类:其他好文   时间:2020-01-21 18:21:24    阅读次数:105
Climbing Stairs
You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you cl ...
分类:其他好文   时间:2020-01-21 16:15:13    阅读次数:70
spark教程(四)-SparkContext 和 RDD 算子
SparkContext SparkContext 是在 spark 库中定义的一个类,作为 spark 库的入口点; 它表示连接到 spark,在进行 spark 操作之前必须先创建一个 SparkContext 的实例,并且只能创建一个; 利用 SparkContext 实例创建的对象都是 RD ...
分类:其他好文   时间:2020-01-18 12:44:55    阅读次数:66
LeetCode 780. Reaching Points
原题链接在这里:https://leetcode.com/problems/reaching-points/ 题目: A move consists of taking a point (x, y) and transforming it to either (x, x+y) or (x+y, y) ...
分类:其他好文   时间:2020-01-17 13:51:06    阅读次数:117
一文快速了解Posix IO 缓冲
1. 背景知识 IO写入的过程是这样的: 用户数据 – 进程IO缓冲区 – 内核缓冲区 – (磁盘缓冲区 磁盘) 通常我们认为一个写请求(注意我们讨论的粒度一定是一个request,在不同环节request可能会被拆分合并)落盘,则是在它从内核缓冲区(内存中的一块区域)刷到磁盘上(不关心磁盘缓冲区) ...
分类:其他好文   时间:2020-01-16 19:19:56    阅读次数:115
[LC] 156. Binary Tree Upside Down
Given a binary tree where all the right nodes are either leaf nodes with a sibling (a left node that shares the same parent node) or empty, flip it up ...
分类:其他好文   时间:2020-01-15 13:37:21    阅读次数:80
Distinguishing between 32-bit and 64-bit A64 instructions
Distinguishing between 32-bit and 64-bit A64 instructionsMost integer instructions in the A64 instruction set have two forms, which operate on either ...
分类:其他好文   时间:2020-01-13 20:02:44    阅读次数:108
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