Adding commas to a number

Question

I\'m trying to make a number like 1234567 go to be 1,234,567, but need some help. My thoughts were that I could use a split with \\d{3} and then join a , to that. T

Answer 1

i dont know if ruby has already an option to format numbers but in regex you can do this

/\G([+-]?\d+?)(?=(?:\d{3})++(?=\.\d++$|$))/g

then replace with this

\1,

sample: http://regex101.com/r/bA9cV2