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  1. array1 = ["unit 1 : Unit 1","unit 2 : Unit 2","unit 3 : Unit 3","test : Test", "system1"]
  2. array2 = ["unit 1","unit 2","unit 3","test"]
  3. array1.each do |element|
  4.     #see if element exists in array 2
  5.     #if array2.include? element[/\A([^:]*?)\s*:/, 1]
  6.     if array2.include? element.split(' : ').first
  7.          #print the name of that element
  8.          puts element
  9.     end
  10. end
  11. puts array1.inspect
  12. puts array2.inspect
Success #stdin #stdout 0.02s 9784KB
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stdin
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Standard input is empty
stdout
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unit 1 : Unit 1
unit 2 : Unit 2
unit 3 : Unit 3
test : Test
["unit 1 : Unit 1", "unit 2 : Unit 2", "unit 3 : Unit 3", "test : Test", "system1"]
["unit 1", "unit 2", "unit 3", "test"]
https://ideone.com/msEgJV
language:
Ruby (ruby 2.5.5)
created:
9 years ago
visibility:
secret

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