2577번 '숫자의 개수'

import Foundation
 
var number = 1
var array: [Int] = [0,0,0,0,0,0,0,0,0,0]
for _ in 0...2{
    if let value = readLine(){
        number *= Int(value.trimmingCharacters(in: .whitespaces))!
    }
}
//print(number)
let numberToString = String(number)
for i in 0..<numberToString.count{
    let index = Int(numberToString[numberToString.index(numberToString.startIndex, offsetBy: i)].description)!
    switch(index){
    case 0:
        array[0] += 1
    case 1:
        array[1] += 1
    case 2:
        array[2] += 1
    case 3:
        array[3] += 1
    case 4:
        array[4] += 1
    case 5:
        array[5] += 1
    case 6:
        array[6] += 1
    case 7:
        array[7] += 1
    case 8:
        array[8] += 1
    case 9:
        array[9] += 1
    default:
        break
    }
}
for i in array{
    print(i)
}