Algorithm(SWIFT)-2つ抽出して追加

問題の説明

せいげんじょうけん

I/O例

I/O例説明

に答える

import Foundation

func solution(_ numbers:[Int]) -> [Int] {
    
    var arr = [Int]()

    for i in 0 ..< numbers.count-1 {
        for j in i + 1 ..< numbers.count {
            
            if !arr.contains(numbers[i] + numbers[j]) {
                arr.append(numbers[i] + numbers[j])
            }
        }
    }
  
    return arr.sorted()
}

import Foundation

func solution(_ numbers:[Int]) -> [Int] {
    
    var st = Set<Int>()
    
    for i in 0 ..< numbers.count - 1 {
        for j in i + 1 ..< numbers.count {
            st.insert(numbers[i] + numbers[j])
        }
    }
    
    return st.sorted()
}