Discussion: provide more solution for each problems

[yuluo-yx]

ideas

• There are many ways to solve a problem. I think we can write down the different solutions to some problems together.

• Write problem solutions in different languages.

[LinuxSuRen]

Of course, I practive my coding skills recently, and record the process in this repository. Please feel free to share yours if you are a user of LeetCode too.