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. …
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 …
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 …
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 …
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 …
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 …