백준 - 보물 - Swift

• 수학
• 그리디 알고리즘
• 정렬

import Foundation

let N = Int(readLine()!)!
let arrayA = readLine()!.split(separator: " ").map{Int(String($0))!}
let arrayB = readLine()!.split(separator: " ").map{Int(String($0))!}

let sortedA = arrayA.sorted(by: { $0 < $1})
let sortedB = arrayB.sorted(by: { $0 > $1})

var sum = 0
for i in 0 ..< N {
   sum += sortedA[i] * sortedB[i]
}
print(sum)

https://www.acmicpc.net/problem/1026

1026번: 보물