raul-gracia/GROUPED_BY_COMMAS_KATA.md

## GROUPED_BY_COMMAS_KATA.md

      
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              GROUPED_BY_COMMAS_KATA.md
            
          
    Kata: Grouped by commas

Finish the solution so that it takes an input 'n' (integer)
and returns a string that is the decimal representation of
the number grouped by commas after every 3 digits.
Assume: 0 <= n < 1000000000
1 -> "1"
10 -> "10"
100 -> "100"
1000 -> "1,000"
10000 -> "10,000"
100000 -> "100,000"
1000000 -> "1,000,000"
35235235 -> "35,235,235"

  
## solution.rb
def solution(n)
end