Which encryption algorithm is easier - AES, RSA, Blowfish, Twofish?

Question

JavaScript

Of the last 2 - logically it should be Blowfish, but what about the first 2?
I want to study so that I can implement it on any platform without third-party libraries. Or change something - so that it cannot be deciphered by third-party means, and at the same time the difference does not shine too much.
And also for training thinking and specific knowledge.
But you have to start simple.

Answer 1

And if you google, you can find a better solution.
number.toLocaleString()

Answer 2

which one do you like better...
only
it's encryption
This hashing is a
different thing altogether.

Answer 3

As I understand it, the most cryptographically strong encryption is symmetrical. So AES fits perfectly.

Answer 4

The simplest encryption algorithm in terms of implementation is RSA (each function takes one line). It is not the easiest generation of encryption keys to pay for this.