Swift：如何檢查與多個集合的交集？-有解無憂

我有一個由 1 到 52 的 5 個亂數生成的主集；我想將這個主集合與其他 13 個集合進行比較，每個集合包含 1 到 52 之間的 4 個數字。有沒有辦法檢查是否有任何 2 個集合，每個集合包含來自主集合的 2 個數字？

import UIKit

var firstCard = 0
var secondCard = 0
var thirdCard = 0
var fourthCard = 0
var fifthCard = 0

func generateRandomNumber(_ from:Int, _ to:Int, _ qut:Int?) -> [Int]
{
   var myRandomNumbers = [Int]()
   var numberOfNumbers = qut

let lower = UInt32(from)
let higher = UInt32(to 1)
    
    if numberOfNumbers == nil || numberOfNumbers! > (to-from)   1
    {
        numberOfNumbers = (to-from)   1
    }
    
    while myRandomNumbers.count != numberOfNumbers
    {
        let myNumber = arc4random_uniform(higher - lower)   lower
        
        if !myRandomNumbers.contains(Int(myNumber))
        {
            myRandomNumbers.append(Int(myNumber))
        }
    }
    
    return myRandomNumbers

}

let myArray = generateRandomNumber(1, 53, 5)

firstCard = myArray[0]
secondCard = myArray[1]
thirdCard = myArray[2]
fourthCard = myArray[3]
fifthCard = myArray[4]


let mainSetA = Set([firstCard, secondCard, thirdCard, fourthCard, fifthCard])

let setB: Set = [1, 2, 3, 4]
let setC: Set = [5, 6, 7, 8]
let setD: Set = [9, 10, 11, 12]
let setE: Set = [13, 14, 15, 16]
let setF: Set = [17, 18, 19, 20]
let setG: Set = [21, 22, 23, 24]
let setH: Set = [25, 26, 27, 28]
let setI: Set = [29, 30, 31, 32]
let setJ: Set = [33, 34, 35, 36]
let setK: Set = [37, 38, 39, 40]
let setL: Set = [41, 42, 43, 44]
let setM: Set = [45, 46, 47, 48]
let setN: Set = [49, 50, 51, 52]

不知道接下來要做什么...

uj5u.com熱心網友回復：

像這樣的事情可能會有所幫助：

let mainSet = Set([1, 2, 3, 4])

在這里，我有四組中的三組，其中至少包含主集中的兩個專案：

let inputs: [Set<Int>] = [
    Set([9, 8, 7, 1]),
    Set([9, 8, 1, 2]),
    Set([9, 1, 2, 3]),
    Set([9, 0, 3, 4])
]

過濾輸入集合陣列，以找到該集合與主集合之間的交集至少為 2 的任何地方：

let matchingSets = inputs.filter {
    $0.intersection(mainSet).count >= 2
}

轉載請註明出處，本文鏈接：https://www.uj5u.com/ruanti/338938.html

標籤：迅速放路口

上一篇：將帶引數的閉包傳遞給SwiftUI視圖

下一篇：UML 活動圖