Here s the string: 04046955104021109
I need it to be formatted like so: 040469551-0402-1109
What s the shortest/most efficient way to do that with ruby?
Two simple inserts will work just fine:
example_string.insert(-9, - ).insert(-5, - )
The negative numbers mean that you are counting from the end of the string. You could also count from the beginning if you d like:
example_string.insert(9, - ).insert(14, - )
how about
s = "04046955104021109"
"#{s[0,9]}-#{s[9,4]}-#{s[13, 4]}"
Here s a little script to show the match:
pattern = /A(d*?)(d{4})(d{4})/
s = "04046955104021109"
output = s.gsub(pattern, 1-2-3 )
Sometimes I think Regexp s are overused, and actually I kind of like Harpastum s solution, but for the record...
>> s = 04046955104021109
>> s.sub /(....)(....)$/, -1-2
=> "040469551-0402-1109"
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