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private static void sort()
{
int[] arr = new int[] { 1 to 50 };
int[] keys = new int[arr.Length];
Random random = new Random();
for (int i = 0; i < keys.Length; i++)
{
keys[i] = random.Next();
}
Array.Sort(keys, arr); // arr 现在随机了
}
class Program
{
static void Main(string[] args)
{
DateTime dt1 = DateTime.Now;
IEnumerable<int> squares = Enumerable.Range(1, 50);
List<int> lst = new List<int>();
foreach (int i in squares)
{
lst.Add(i);
}
int[] rslt = new int[50];
Random rand = new Random();
for (int i = 49; i >= 0; i--)
{
int r = rand.Next(0, i);
rslt[i] = lst[r];
lst.RemoveAt(r);
}
Console.WriteLine("consume MilSec:" + (DateTime.Now - dt1).TotalMilliseconds.ToString());
int line = 0;
foreach (int t in rslt)
{
Console.WriteLine(line++ + ":" + t.ToString());
}
}
}
Random rd = new Random();
int[] a = new int[50];
for(int i=0;i<a.Length;i++)
{
int index = rd.Next(a.Length);
int tmp = a[index];
a[index] = a[i];
a[i] = tmp;
}
for(int i=0;i<a.Length;i++)
Console.Write(a[i]==0?i:a[i]);
IEnumerable<int> squares = Enumerable.Range(1, 50);
List<int> lst = new List<int>();
foreach(int i in squares)
{
lst.Add(i);
}
int[] rslt = new int[50]();
Random rand = new Random();
for(int i = 49; i>=0;i--)
{
int r = rand.Next(0, i);
rslt[i] = lst[r];
}
foreach(int t in rslt)
{
console.writeline(t);
}
int [] number = new int[50];
for (int i = 1; i < 51; i++)
{
number[i - 1] = i;
}
Random ran = new Random();
ran.Next(0, 50);
List<int> intList = new List<int>();
for (int i = intList.Count; i <= 50; i++)
{
int _number = ran.Next(0, 49);
if (intList.Count == 0)
{
intList.Add(number[_number]);
}
else
{
if (!intList.Contains(number[_number]))
intList.Add(number[_number]);
}
}
foreach (int item in intList)
{
this.div_1.InnerHtml += item + " , ";
}
public void RandSort(int[] _num)
{
for (int i = 0; i < _num.Length - 1; i++)
{
Random rd = new Random();
int temp = rd.Next(i,_num.Length);
int tempNum = _num[i];
_num[i] = _num[temp];
_num[temp] = tempNum;
Thread.Sleep(20);//注意:引入命名空间:System.Threading;
}
}