温故知新--数组（产生一个int数组，长度为100，并向其中随机插入1-100，并且不能重复。）

一：

Random rd = new Random(100);

int[] rdNumber = new int[100];

Hashtable ht = new Hashtable();

for (int i = 0; i < 100; i++)

{

int next = rd.Next(100);

while (ht.Contains(next))

{

next = rd.Next(100);

}

ht.Add(next, 0);

rdNumber[i] = next;

}

for (int i = 0; i < 100; i++)

{

Response.Write(rdNumber[i] + " ");

}

二:

Random rd = new Random(100);

int[] rdNumber = new int[100];

List<int> lt = new List<int>(100);

for (int i = 0; i < 100; i++)

{

lt.Add(i);

}

for (int i = 0; i < 100; i++)

{

int next = rd.Next(lt.Count);

rdNumber[i] = lt[next];

Response.Write(lt[next] + " ");

lt.Remove(lt[next]);

}