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- func checkArray(array1: Array<String>, array2: Array<String>) -> Array<String> {
- var list = Array<String>()
- var set = Set<String>()
- for item in array1 {
- set.insert(item)
- }
- for item in array2 {
- if set.contains(item) {
- list.append(item)
- }
- }
- return list
- }
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