通过随机订购号码

Question

我有一些列表有5个数字（例如1 2 3 4 5）我想按顺序随机排列每次（页面刷新）示例：（2 4 3 1 5）（1 3 5 4 2）（5 1 2 3 4）中的C＃...代码，由于

var loadcards = (from card in db.GameCards 
        select card).Take(5).ToList(); 

    foreach (var item in loadcards) 
    { 
     Response.Write("<script>alert('" + item.cardId + "');</script>"); 
    } 

Answer 1

像这样：

int[] RandomizeOrder(int[] input) 
{ 
Random RNG = new Random(); 
bool[] cellMap = new bool[input.Length]; 
int[] output = new int[input.Length]; 
for(int i = 0; i < input.Length; i++) 
{ 
    int index = RNG.Next(input.Length) 
    while(cellMap[index) 
    index = RNG.Next(input.Length); 
    cellMap[index] = true; 
    output[index] = input[i];  
} 
return output; 
} 

PS：可以除去cellMap如果没有值是0