Jobdo: Add a folder

Codes in this folder are my answers for the exercises in
https://ac.jobdu.com

Signed-off-by: guofengliu <lgf612@sina.com>
Algorithms: Add a folder

Codes in this folder are for the practices in Mastering Algorithms
with C.

Signed-off-by: guofengliu <lgf612@sina.com>