// stride example
let names = ["anotonio", "jeff", "ibraheem", "li"]

for index in stride(from: 0, through: names.count - 1, by: 1) {
    print(names[index], terminator: " ")
} // anotonio jeff ibraheem li

for index in stride(from: names.count - 1, through: 0, by: -1) {
    print(names[index], terminator: " ")
} // li ibraheem jeff anotonio