ios两个数组找出重复元素

let array1 = [1, 2, 3, 4, 5]
let array2 = [4, 5, 6, 7, 8]

let set1 = Set(array1)
let set2 = Set(array2)

let intersection = set1.intersection(set2)

print(intersection) // 输出: [4, 5]

let array1 = [1, 2, 3, 4, 5]
let array2 = [4, 5, 6, 7, 8]

let duplicates = array1.filter { array2.contains($0) }

print(duplicates) // 输出: [4, 5]

let array1 = [1, 2, 3, 4, 5]
let array2 = [4, 5, 6, 7, 8]

var duplicates = [Int]()

for element in array1 {
    if array2.contains(element) && !duplicates.contains(element) {
        duplicates.append(element)
    }
}

print(duplicates) // 输出: [4, 5]