[Swift 알고리즘] 예상 대진표

https://programmers.co.kr/learn/courses/30/lessons/12985

import Foundation

func solution(_ n:Int, _ a:Int, _ b:Int) -> Int {

    var answer = 0

    var aValue = a
    var bValue = b
    while aValue != bValue {
        if aValue % 2 == 1 {
            aValue = aValue / 2 + 1
        } else {
            aValue = aValue / 2
        }

        if bValue % 2 == 1 {
            bValue = bValue / 2 + 1
        } else {
            bValue = bValue / 2
        }

        answer += 1

    }
    return answer
}