ASP.NET实现微信抢红包代码实例

正文

100块发30个红包

demo

/// 

 /// 抢红包
 /// 
 /// 
 /// 
 /// 
 public List qhb(int money, int num)
 {
  int min = 1;
  int pjs = money / num;
  List list = new List();
  Random rnd = new Random();
  for (int i = 0; i < num; i++)
  {
  int max = (money / (num - i)) * 2;
  int s = rnd.Next(min, max);
  s = checkmoney(s, min, max);
  list.Add(s);
  money -= s;
  }
  //前面数据都是合理的,结尾必须多退少补
  list = checklist(money, pjs, list);
  return list;
 }

/// 

 /// 余数处理
 /// 
 /// 
 /// 
 /// 
 public List checklist(int money, int pjs, List list)
 {
  if (money != 0)
  {
  if (money > 0)
  {

   List list_order = maopao(list);
   //给最小
   if (money / pjs == 0)
   {   
   list_order[0] += money;
   }
   else
   {
   for (int i = 0; i < money / pjs + 1; i++)
   {
    if (i == money / pjs)
    {
    list_order[i] += (money - (money / pjs) * pjs);
    }
    else
    {
    list_order[i] += pjs;
    }

   }
   }
   return list_order;
  }
  else
  {

   List list_order = maopao(list,"desc");
   //给最大
   if (money / pjs == 0)
   {

   list_order[0] += money;
   }
   else
   {
   for (int i = 0; i < -(money / pjs) + 1; i++)
   {
    if (i == -(money / pjs))
    {
    list_order[i] += (money - (money / pjs) * pjs);
    }
    else
    {
    list_order[i] -= pjs;
    }

   }
   }
   return list_order;
  }
  }
  return list;
 }

 /// 

  /// 冒泡排序
  /// 
  /// 
  /// 
  /// 
  public List maopao(List list,string order = "asc")
  {
  if (order != "asc")
  {
   for (int i = 0; i < list.Count; i++)
   {
   for (int j = 0; j < list.Count - i - 1; j++)
   {
    if (list[j + 1] > list[j])
   {
    int temp = list[j];
    list[j] = list[j + 1];
    list[j + 1] = temp;
 
    }
   }
   }
  }
  else 
  {
   for (int i = 0; i < list.Count; i++)
   {
   for (int j = 0; j < list.Count-i-1;j++)
   {
    if (list[j+1] < list[j])
    {
    int temp = list[j];
    list[j] = list[j+1];
    list[j+1] = temp;

   }
   }
  }
  }
  return list;
 }

/// 

 /// 打乱顺序
  /// 
  /// 
  /// 
 public List suiji(List list) 
  {
  Random rnd = new Random();
  for (int i = 0; i < list.Count; i++)
  {
   int temp = list[i];
   int j = rnd.Next(0, list.Count-1);
   list[i] = list[j];
   list[j] = temp;
  }
  return list;
 }

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