Question

我正在制作一个拼图滑块程序，并尝试随机化图片框内的图像。我在互联网上做了一些研究，找不到我可以做的任何例子。这些是我的代码：

        Random r = new Random();

        PictureBox[] picBox = new PictureBox[9];
        picBox[0] = new PictureBox();
        picBox[1] = new PictureBox();
        picBox[2] = new PictureBox();
        picBox[3] = new PictureBox();
        picBox[4] = new PictureBox();
        picBox[5] = new PictureBox();
        picBox[6] = new PictureBox();
        picBox[7] = new PictureBox();
        picBox[8] = new PictureBox();

我也有位图数组：

        Bitmap[] pictures = new Bitmap[9];
        pictures[0] = new Bitmap(@"1.1Bright.jpg");
        pictures[1] = new Bitmap(@"1.2Bright.jpg");
        pictures[2] = new Bitmap(@"1.3Bright.jpg");
        pictures[3] = new Bitmap(@"2.1Bright.jpg");
        pictures[4] = new Bitmap(@"2.2Bright.jpg");
        pictures[5] = new Bitmap(@"2.3Bright.jpg");
        pictures[6] = new Bitmap(@"3.1Bright.jpg");
        pictures[7] = new Bitmap(@"3.2Bright.jpg");
        pictures[8] = new Bitmap(@"3.3Dark.jpg");

我尝试了几种方法，但我不知道如何将随机图片[]设置到picBox []中：

        for(int i=0; i<=8;i++)
        {
            picBox[i].Image= pictures[r.Next(0,9)];
        }

这里的问题是一些图片盒，例如picBox [1]和picBox [6]是重复的图片。我如何使它们不重复？非常感谢非常感谢。

Answer 1

只需填充数组并使用shuffle算法。

也许实现为扩展方法：

namespace ExtensionMethods
{
    public static class Extensions
    {
        static Random rng = new Random();

        public static void shuffle<T>(this T[] array)
        {
            // i is the number of items remaining to be shuffled.
            for (int i = array.Length; i > 1; i--)
            {
                // Pick a random element to swap with the i-th element.
                int j = rng.Next(i);  // 0 <= j <= i-1 (0-based array)
                // Swap array elements.
                T tmp = array[j];
                array[j] = array[i - 1];
                array[i - 1] = tmp;
            }
        }

    }
}

致电样本：

使用ExtensionMethods;

namespace ConsoleApplication
{

    static class Program
    {
        static void Main()
        {
            int[] array = new int[] {1,2,3,4,5,6,7,8,9};

            array.Shuffle();
        }
    }
}

Answer 2

创建一个等于图片数组大小的bool数组

bool[] usedPictures = new bool[pictures.Length];

将此数组的值设置为false。现在确定你的随机数，并测试是否使用了该元素，如：

int iCount = 0;
Random random = new Random();
while (iCount < pictures.Length)
{
    int attempt = random.Next(0, pictures.Length);

    //Ensures you will only use an available picture
    if (usedPictures[attempt] == false)
    {            
        picBox[attempt].Image= pictures[iCount];
        doorUsed[attempt] = true;
        iCount++;
    }
}

picturebox图像随机化C＃

2 个答案: