ruby - 在 Ruby 中压缩双字符

Question

压缩字符串中多字符的最佳方法是什么？

Example:
hahahahahaha => ha
lalalala => la
awdawdawdawd => awd

str.squeeze("ha")  # doesn't work
str.tr("haha", "ha") # doesn't work 

Answer 1

def squeeze(s)
  s.gsub(/(.+?)\1+/, '\1')
end

puts squeeze('hahahaha')                  # => 'ha'
puts squeeze('awdawdawd')                 # => 'awd'
puts squeeze('hahahaha something else')   # => 'ha something else'