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  1. regex = /([^\s@]+)((?:@[^\s@]+)*@)([^\s@]+)/
  2. text = "aaa@xxx@bbb aaa@xxx@bbb aaa@bbb aaa@xxx@xxx@xxx@bbb"
  3.  
  4. puts(text.gsub(regex){"#{$1.upcase}#{$2}#{$3.upcase}"})
Success #stdin #stdout 0.01s 6252KB
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Standard input is empty
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AAA@xxx@BBB AAA@xxx@BBB AAA@BBB AAA@xxx@xxx@xxx@BBB
https://ideone.com/7kjYcr
language:
Ruby (ruby 2.5.5)
created:
3 years ago
visibility:
secret

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