How to split a CamelCase string in its substrings in Ruby?

user_1034 0
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I have a nice CamelCase string such as ImageWideNice or ImageNarrowUgly. Now I want to break that string in its substrings, such as Image, Wide or Narrow, and Nice or Ugly.

I thought this could be solved simply by

camelCaseString =~ /(Image)((Wide)|(Narrow))((Nice)|(Ugly))/

But strangely, this will only fill $1 and $2, but not $3.

Do you have a better idea for splitting that string?

string-split ruby regex
8 Answers
I/p:- "ImageWideNice".scan(/[A-Z][a-z]+/).join(",")

O/p:- "Image,Wide,Nice"
user_43649680 
def solution(string)
  final_str = []
  string.chars.each do |x|
    final_str << " "  if x.upcase == x 
    final_str << x
  end
  final_str.join
end
user_42567190
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