Daniel Ray's Blog
I like computer science and programming. I hope you enjoy my blog.
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06
Jul 2020
Stacks
A stack is a container, like an array. However, each element of an array can be accessed directly and in constant time. ...
27
Jun 2020
There are more real numbers than natural numbers
The natural numbers are the numbers 1, 2, 3, 4, 5, .... Real numbers are numbers such as 10.4541, 1, -2358.541, etc., et...
19
Jun 2020
Turing Machines
In a previous post, I gave an informal explanation of the P=NP? problem. In that post, I described both deterministic an...
19
Jun 2020
An Informal Explanation of the P=NP? Problem
You have an easy job. Every hour your manager comes into your office and gives you a positive integer. Your job is simpl...
19
Jun 2020
The K-Nearest Neighbors Algorithm
The k-nearest neighbors algorithm is a simple machine-learning algorithm that classifies a new data point according to t...
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