Question

我在创建滑动拼图时遇到问题。我正在尝试制作一种方法来重置＆amp;洗牌所有15个按钮，但问题是随机数重复。

当我写bool[] usednum = new bool[array.length];时出现错误，所以我增加了usednum数组的长度......

private void reset()
{
    int[] array = { 1, 2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 };
    int count = 0;
    Random r = new Random();
    bool[] usednum = new bool[50];

    for (int i = 0; i < usednum.Length; i++)
        usednum[i] = false;

    while (count < array.Length)
    {
        int temp = array[r.Next(array.Length)];
        if (usednum[temp] == false)
        {
            button1.Text = temp.ToString();
            usednum[temp] = true;
            count++;
        }

        temp = array[r.Next(array.Length)];
        if (usednum[temp] == false)
        {
            button2.Text = temp.ToString();
            usednum[temp] = true;
            count++;
        }

        temp = array[r.Next(array.Length)];
        if (usednum[temp] == false)
        {
            button3.Text = temp.ToString();
            usednum[temp] = true;
            count++;
        }

        temp = array[r.Next(array.Length)];
        if (usednum[temp] == false)
        {
            button4.Text = temp.ToString();
            usednum[temp] = true;
            count++;
        }

        temp = array[r.Next(array.Length)];
        if(usednum[temp] == false)
        {
            button5.Text = temp.ToString();
            usednum[temp] = true;
            count++;
        }

        temp = array[r.Next(array.Length)];
        if (usednum[temp] == false)
        {
            button6.Text = temp.ToString();
            usednum[temp] = true;
            count++;
        }
        /*.
        . 
        . 
        . to button 15*/

Answer 1

只需将数组洗牌：http://en.wikipedia.org/wiki/Shuffling

一个简单的shuffle算法（伪代码）

maxIndex = array.Length - 1
for index in 0 to maxIndex - 1
    swapIndex = random number between index and maxIndex
    swap (array, index, swapIndex)

Answer 2

而不是使用静态数组使用列表

var array = new int[] { 1, 2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 };
var unused = array.ToList();
var r = new Random();
while (unused.Count > 0)
{
       int c = r.Next(unused.Count - 1);
       int current = unused[c];
       unused.RemoveAt(c);
       //...
}

滑动拼图帮助随机瓷砖

2 个答案: