How can I obtain some algorithm skills, please introduce some references

Answer 1

Algorithms are merely just a math formula to make some calculation for a certain group of values before they can be stored or used during the execution if your code.
Knowledge of math is actually mandatory but you could always contact a mathematical professional to create your algorithm that you need to be incorporating into your code or program.

Answer 2

There are A LOT of free sources online where you can learn all you can about algorithms till you're blue in the face. I would give them to you but I am not sure if this site allows external links to other free learning websites.

Answer 3

Hey so I posted my references in a thread I just created. It has many math lessons from top universities for free. Check it out.