SteemJs: How Many Witnesses are Running on 23.1?
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. …
Illustrating the Blockchain via SteemJs – Blocks are Chained
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 …
DFS and BFS Algorithms to Find All the Lonely Nodes of a Binary Tree
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 …
Three ways of Running a continuous NodeJS Application on Your Server
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 …
K Closest Points to Origin using Custom Sorting Algorithm in C++/Java
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 …
Using Hash Set to Determine if a String is the Permutation of Another String
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 …