//: Playground - noun: a place where people can play

import UIKit

let a: String = "123435436436567789970";
let b: String = "1112223344556677889900";

var odd = ""
var even = ""
var evenb = ""
var oddb = ""
var sum = ""
var average = ""
var pak = 2

for ping in a.characters{

    var toAdd = "\(ping)"
    switch toAdd.lowercased() {
    case "2", "4", "6", "8", "0":
        even = even + toAdd
        break;

    default:
        break

    }
}

for ping in a.characters{
    var toAdd = "\(ping)"
    switch toAdd.lowercased() {
    case "1", "3", "5", "7", "9" :
    odd = odd + toAdd
    break;

    default:
        break
    }
}

for ping in b.characters{

    var toAdd = "\(ping)"
    switch toAdd.lowercased() {
    case "2", "4", "6", "8", "0":
        evenb = evenb + toAdd
        break;

    default:
        break

    }
}

for ping in b.characters{
    var toAdd = "\(ping)"
    switch toAdd.lowercased() {
    case "1", "3", "5", "7", "9" :
        oddb = oddb + toAdd
        break;

    default:
        break
    }
}



sum = even+odd

print("Even numbers in str: \(even.characters.count)")
print("Odd numbers in str: \(odd.characters.count)")

print("Even numbers in str2: \(evenb.characters.count)")
print("Odd numbers in str2: \(oddb.characters.count)")

print("Average: \(sum.characters.count/pak)")