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Jul 15th, 2019
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  1. func checkArray(array1: Array<String>, array2: Array<String>) -> Array<String> {
  2. var list = Array<String>()
  3. var set = Set<String>()
  4.  
  5. for item in array1 {
  6. set.insert(item)
  7. }
  8.  
  9. for item in array2 {
  10. if set.contains(item) {
  11. list.append(item)
  12. }
  13. }
  14. return list
  15. }
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