grepper rank
1)No Belt => just start,not in the flow of saving.
2)white Belt => staert habit of saving code
3)yellow Belt=> represent at least 4 months of experience
4)Orange Belt=> represent at least 8 months of experience
5)Green Belt => represent at least 1 year of experience
6)Blue Belt=> represent at least 2 years of experience
7)Purple Belt=> represent at least 4 years of experience
8)Brown Belt=> represent at least 8 years of experience
9)black Belt=> represent highest level of experience