如何在Swift中创建图像数组，并使用draw()将其绘制出来？

import UIKit

func createImageArrayAndDraw() -> UIImage? {
    var imageArray = [UIImage]()
    
    // 添加图像到数组中
    imageArray.append(UIImage(named: "image1")!)
    imageArray.append(UIImage(named: "image2")!)
    imageArray.append(UIImage(named: "image3")!)
    
    // 创建绘制图形的上下文
    UIGraphicsBeginImageContextWithOptions(CGSize(width: 300, height: 300), false, 0.0)
    
    // 遍历图像数组，绘制图像
    for image in imageArray {
        let rect = CGRect(x: 0, y: 0, width: 100, height: 100)
        image.draw(in: rect)
    }
    
    // 获取绘制后的图像
    let drawnImage = UIGraphicsGetImageFromCurrentImageContext()
    
    // 结束绘制上下文
    UIGraphicsEndImageContext()
    
    return drawnImage
}

// 调用函数创建图像数组并绘制
let resultImage = createImageArrayAndDraw()