func makeAnagram(a: String, b: String) -> Int {
    let alphabetic = 26
    
    var countsA = Array(repeating: 0, count: alphabetic)
    var countsB = Array(repeating: 0, count: alphabetic)
    
    for c in a.enumerated() {
        countsA[Int(c.element.asciiValue! - 97)] += 1
    }
    for c in b.enumerated() {
        countsB[Int(c.element.asciiValue! - 97)] += 1
    }
    
    var toBeRemoved = 0
    
    for i in 0..<alphabetic {
        toBeRemoved += abs(countsA[i] - countsB[i])
    }
    
    return toBeRemoved
}