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Juan Cruz Martinez: Founder & Author of Live Code Stream

Hi, I'm Juan!

I'm the founder of Live Code Stream. I built this site to support developers during their learning journey.

I have more than 10 years of experience as a software engineer, worked on multiple top companies and locations around the world.

My focus is on web development but I have passion for AI and Blockchain.

Learn More...

Coding streams

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Interacting with Smart Contracts from Web Apps
Introduction to building web apps that work with Ethereum Smart Contracts.
November 7, 2020
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Password Cracker
Kittens kittens everywhere.
September 16, 2020
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Chief Hopper
Find the minimum units of energy with which bot should start to successfully complete the game.
September 10, 2020
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Special String Again
Find Special sub-strings in a string.
September 5, 2020
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Blog

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How to animate the web with React
Learn different options on how to animate the web using React.
March 3, 2021
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Beginner’s Guide to Data Encryption with NodeJS
Learn the basics of encryption and how it can be used with NodeJS to protect your data.
February 28, 2021
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JavaScript reducer - A simple, yet powerful array method
Learn about the ins and outs of the reduce array function, how it works, and how to build your own.
February 13, 2021
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The battle of the JS frameworks: Angular’s developer point of view
We know and love React, but what’s about Angular that gets so much love and attention? Let’s find out
February 10, 2021
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Solving the programming challenge

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Matrix Layer RotationHard
Rotate the matrix R times and print the resultant matrix.
November 30, 2020
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Bigger is GreaterMedium
Rearrange the letters of a string to construct another string such that the new string is lexicographically greater than the original.
October 27, 2020
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What's NextMedium
Given a compressed binary integer, find the next largest binary integer having the same number of 1s and compress that number.
October 18, 2020
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Climbing the LeaderboardMedium
Help Alice track her progress toward the top of the leaderboard!
October 15, 2020
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Larry's ArrayMedium
Determine whether the array can be sorted using a special permutation
October 8, 2020
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Morgan and a String!Expert
Find the lexicographically minimal string that can be formed by the combination of two strings.
September 28, 2020
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Author(s) Featured On
Detailed - The 50 Best Web Development Blogs Level Up Coding - Best of Level Up Coding (August 2020)