复制代码 代码如下:

/// <summary>

/// 产生无重复随机数

/// </summary>

/// <param name="num">个数</param>

/// <param name="minValue">最小数</param>

/// <param name="maxValue">最大数</param>

/// <returns>数组</returns>

public int[] getNum(int num, int minValue, int maxValue)

{

Random ra = new Random(unchecked((int)DateTime.Now.Ticks));

int[] arrNum = new int[num];//注意:数组中各元素的初始值是0,当0在取值范围内时要另处理

int tmp = 0;

for (int i = 0; i < num; i++)

{

tmp = getRandomNum(tmp, minValue, maxValue, ra);//取出值赋到数组中

if (Array.IndexOf(arrNum, tmp) < 0)//判断是否存在,不存在的话元素tmp的索引应为-1

{

arrNum[i] = tmp;

}

else

{

i = i - 1;

}

}

return arrNum;

}

public int getRandomNum(int tmp, int minValue, int maxValue, Random ra)

{

tmp = ra.Next(minValue, maxValue);

return tmp;

}