Print a pyramid of stars given the height

pyramid.swift

import UIKit

//Write a function that accepts an Int and prints out a sideways pyramid of that height.

func pyramid(height: Int) {
    for i in 1...height {
        printStarline(height: i)
    }
    for i in stride(from: height-1, to: 0, by: -1)   {
        printStarline(height: i)
    }
}

func printStarline(height: Int) {
    var starline = ""
    for _ in 1...height {
        starline += "*"
    }
    print(starline)
}

func reversePyramid(height: Int) {
    var space = height - 1

    for i in 1...height {
        rightAlignStarline(space: space, stars: i)
        space -= 1
    }
    
    space += 2
    
    for i in stride(from: height-1, to: 0, by: -1) {
        rightAlignStarline(space: space, stars: i)
        space += 1
    }
    
}

func rightAlignStarline(space: Int, stars: Int) {
    let spaces = String(repeating: " ", count: space)
    
    let stars = String(repeating: "*", count: stars)
    
    let starline = spaces + stars
    
    print(starline)
}

pyramid(height: 5)

reversePyramid(height: 5)

// *
// **
// ***
// ****
// *****
// ****
// ***
// **
// *