Tag: programming
Given a string s, return the length of the longest substring between two equal characters, excluding the two characters. If there is no such substring return -1. A substring …
August 31, 2020
algorithms, Binary Tree, c / c++, C/C++, code, data structure, interviews, Java, programming languages, Python
A Binary Search Tree (BST) is a commonly used data structure that can be used to search for an item in O(LogN) time. A BST has the following characteristics: …
Many questions are interesting but the answers are not obvious or easy to get. For example: Who comments most in the last 24 hours? I am going to show …
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. …
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. …
