DEV Community: Charlie Barajas

Shortest Tour Problem (Udacity)

Charlie Barajas — Thu, 10 Jul 2025 22:42:33 +0000

Udacity's course on Theoretical Computer Science provides lots of solutions and special problems regarding the NP = P field in TCS.

The Shortest Tour is a problem that describes whether we can find the best and shortest path of a tour in a series of distances where tour_guide = 0 initially and best_tour_guide = (tour_guide) + distance(n,n+1) for i in house(i, i+1).

This is an example...

First PHP Script..

Charlie Barajas — Sun, 06 Jul 2025 03:08:51 +0000

<?php
//script goes here

$str = "Hello & Welcome to Simplilearn";

$num = 5;

$float = 7.6;

echo "

" .$str . "

";
echo "

" .$num . "

";
echo "

" .$float . "

";
?>

I just created my first PHP hello world script using SimpliLearn's free introductory course on the PHP language.

ClassList in JS

Charlie Barajas — Mon, 30 Jun 2025 01:25:46 +0000

The ClassList is a JS method that adds or removes classes and helps with providing layout, formatting, font-style, and other CSS methods.

FreeCodeCamp provides a free course on Introduction to JavaScript and is thoroughly and extensively.

Course on MatLab using Uni Email Membership

Charlie Barajas — Mon, 23 Jun 2025 01:20:59 +0000

How MATLAB is providing free courses (with university email) to help with big data and analytics.

Matlab is an excellent platform for learning from basic arrays to complex API and object instance tools, such as pointers and data clusters.

OpenHPI Embeddig NLP Systems Free course!

Charlie Barajas — Sat, 21 Jun 2025 21:32:57 +0000

The OpenHPI course is amazing for learning about NLP vector database and data models for vector similarity models! The course is entirely free and has a certificate.

TCM Security Post

Charlie Barajas — Thu, 19 Jun 2025 05:50:55 +0000

This came from the Practical Help Desk Course on TCM Security.

I highly recommend this course for three reasons:

Ease of course content
Avoids unnecessarily complex labs but still has hands-on guides with Linux/Windows administration features

Great for beginners entering their first IT role!

Memory Management in JS

Charlie Barajas — Wed, 18 Jun 2025 02:16:36 +0000

Hello,

Today, I took a lecture from freecodecamp.com's Full Stack JavaScript course and learned about memory management. When a variable is created, it retains its memory address.

function createLargeArray() {
let largeArray = new Array(1000000);
return function() {
console.log(largeArray.length);
};
}

let printArrayLength = createLargeArray();
printArrayLength();

This snippet demonstrates that although createLargeArray() can't be trashed, it is still closed, and the return access means that more memory is used than expected.

Cybrary Lab Active Directory Basics Completd

Charlie Barajas — Wed, 11 Jun 2025 03:28:48 +0000

Here is a lab I conpleted on the Cybrary website.

Odin Project Web Dev Assignment

Charlie Barajas — Tue, 10 Jun 2025 04:42:11 +0000

Check out this Pen I made!

DEV Community: Charlie Barajas

Shortest Tour Problem (Udacity)

First PHP Script..

" .$str . "

"; echo "

" .$num . "

"; echo "

" .$float . "

"; ?>

ClassList in JS

Course on MatLab using Uni Email Membership

How MATLAB is providing free courses (with university email) to help with big data and analytics.

OpenHPI Embeddig NLP Systems Free course!

TCM Security Post

Memory Management in JS

Cybrary Lab Active Directory Basics Completd

Here is a lab I conpleted on the Cybrary website.

Odin Project Web Dev Assignment

";
echo "

";
echo "

";
?>