Using Hash Set to Determine if a String is the Permutation of An

  • 时间：2020-09-09 13:08:38
  • 分类：网络文摘
  • 阅读：148 次
Given two strings s1 and s2, write an algorithm to determine if s1 is one permutation of s2. For example: s1 = “abc”, s2 = “bca” output: true s1 = “abc”, s2 = “bad” output: false Algorithm to ... ...

K Closest Points to Origin using Custom Sorting Algorithm in C++

  • 时间：2020-09-09 13:08:38
  • 分类：网络文摘
  • 阅读：144 次
We have a list of points on the plane. Find the K closest points to the origin (0, 0). (Here, the distance between two points on a plane is the Euclidean distance.) You may return the answer in any order. The answer is guaranteed to be uni... ...

Three ways of Running a continuous NodeJS Application on Your Se

  • 时间：2020-09-09 13:08:38
  • 分类：网络文摘
  • 阅读：176 次
Let’s say, I have an application that is written in NodeJs, that process the latest blocks of the steem blockchain and write data into a database. I have three ways of running it on my server. Using Screen Command As you probably know... ...

DFS and BFS Algorithms to Find All the Lonely Nodes of a Binary

  • 时间：2020-09-09 13:08:38
  • 分类：网络文摘
  • 阅读：150 次
In a binary tree, a lonely node is a node that is the only child of its parent node. The root of the tree is not lonely because it does not have a parent node. Given the root of a binary tree, return an array containing the values of all l... ...

Illustrating the Blockchain via SteemJs – Blocks are Chain

  • 时间：2020-09-09 13:08:38
  • 分类：网络文摘
  • 阅读：156 次
Blockchain is a fancy word, and not many people understand it. If you want to explain this to your GF/partner, what would be the most simple way? Right, blocks are chained in one way, as time goes on, in particular for STEEM blockchain, eve... ...

SteemJs: How Many Witnesses are Running on 23.1?

  • 时间：2020-09-09 13:08:38
  • 分类：网络文摘
  • 阅读：179 次
How many witnesses are running on 23.1 and how many of them are active? It turns out answering this question does not require preprocess blocks on steem blockchain e.g. SteemSQL. Rather, we can get the answer by pure SteemJS. Get All Witnes... ...

How to Design a Browser History using Double-ended Queue (deque)

  • 时间：2020-09-09 13:08:38
  • 分类：网络文摘
  • 阅读：148 次
You have a browser of one tab where you start on the homepage and you can visit another url, get back in the history number of steps or move forward in the history number of steps. Implement the BrowserHistory class: BrowserHistory(string ... ...

Are Top 20 Witnesses Voting Each Other? Introducing Witness-voti

  • 时间：2020-09-09 13:08:38
  • 分类：网络文摘
  • 阅读：161 次
Let’s introduce a concept i.e. witness-voting factor that represent the average witness voting each other in the TOP 20. The maximum value is 20, and the minimal is 0. If the witness-voting factor is 20, it means that all top 20 witne... ...

Boost the Visibility of Your Blog With In-Person Events

  • 时间：2020-09-09 12:59:00
  • 分类：网络文摘
  • 阅读：160 次
Most bloggers focus on improving the visibility and reach of their blog on blog-adjacent channels. They invest more heavily in strategies like search engine optimization (SEO), social media marketing, and even paid advertising to capitalize... ...

Google’s Perfect World: A New Technical SEO Framework

  • 时间：2020-09-09 12:59:00
  • 分类：网络文摘
  • 阅读：168 次
Every so often, a new framework is hyped for search engine optimization. Brian Dean’s “skyscraper technique” for link building comes to mind. So does Rand Fishkin’s “on-SERP” strategy for increasing page one real estate for your links. The ... ...