[FIX] Pre-existing algorithms do not fit the contribution guidelines

Detailed description

Some of the older algorithms existing in this repository do not fit the contribution guidelines.

A short list of examples:

• Armstrong number
• binary exponent
• check prime
• complex numbers
• square root double

Context

Educating new developers on coding standards is a major priority; As the industry today relies heavily on documentation; If you were to ask any API developer/user on what the most important part of their development and use it will always be:

• Code quality
• documentation

having a fast and performant algorithm is good but whats the point if you cant understand how it works or even why it works.

I think it is in the best interest of us to document our algorithms.

As i consider all algorithms must be:

• beautiful
• understandable
• educational

Possible implementation

No response

Additional information

Others in the past have made major changes like this to this repository and i think its time for us to do the same. to keep the torch moving.

An homage to @kvedala for their part in trying to standardize this repository #805