HackerRank - Cracking the Coding Interview - Linked Lists: Detect a Cycle : Swift solution suggestion

linked-lists-detect-a-cycle.swift

import Foundation

class Node {
    var data: Int
    var next: Node?

    init(data: Int) {
        self.data = data
    }
}

private func hasCycle(head: Node) -> Bool {
    var current: Node = head
    for _ in 0...100 {
        if current.next != nil {
            current = current.next!
        } else {
            return false
        }
    }
    return true
}

//  Awkward way to create LinkedList manually with Nodes

var head: Node = Node(data: 1)
var nodeTwo: Node = Node(data: 2)
var nodeThree: Node = Node(data: 3)
head.next = nodeTwo
nodeTwo.next = nodeThree
nodeThree.next = nodeTwo

print(hasCycle(head: head) ? "1" : "0")