//如果存在超过2个以上的连续数字, 如: 10,1,2,3,4,5,6,7,8,9 中的1,2,3,4,5,6,7,8,9 , 则将1,2,3,4,5,6,7,8,9打乱
private List <int> ReOrderRanks(List <int> ranks)
{
var ranksStr = string.Join(",", ranks);//10,1,2,3,4,5,6,7,8,9
var max = ranks.Count;
var maxRanks = new List <int>();
for (var i = 1; i <= max; i++)
{
maxRanks.Add(i);
}
var maxRanksStr = string.Join(",", ranks); // 1,2,3,4,5,6,7,8,9,10
for (var len = max; len >= 3; len--)
{
var ranksByLen = GetRanksByLen(maxRanks, len);
var rankSection = ranksByLen.Where(rl => ranksStr.IndexOf(rl) > -1).FirstOrDefault();
if (rankSection != null)
{
var rList = rankSection.Split(',').Select(r => int.Parse(r)).ToList();
var disruptOrder = RandomUtil.DisruptOrder(rList);
ranksStr = ranksStr.Replace(rankSection, string.Join(",", disruptOrder));
break;
}
}
return(ranksStr.Split(',').Select(r => int.Parse(r)).ToList());;
}
/// <summary>
/// 计算名次
/// minCostMatrix 的计数从0开始, 加1返回
/// </summary>
/// <returns></returns>
private List <int> GetRanks(int[] minCostMatrix, List <BetRateModel> betRates)
{
var ranks = minCostMatrix.Select(m => m + 1).ToList();
// 自然数升序的情况, 通常是因为无论什么顺序, 奖金都相同, 如只有一个用户下注1号车的10个名次都是大,且金额相同
// 此时生成个随机数返回
var rankStr = string.Join(",", ranks);
// 用户下注1-9号车, 10没下注, 结果为 10,1,2,3,4,5,6,7,8,9, 后9位如果奖金相同, 后9位生成随机顺序
var motoRates = betRates.GroupBy(r => r.Num).Select(g => new { Num = g.Key, Val = g.Sum(r => r.Rate) }).ToList();
// 按奖金分组, 如果每组长度有超过2的, 这组如果在计算结果中是按升序存在的, 则打乱顺序
var valRates = motoRates.GroupBy(r => r.Val).Select(g => new { Val = g.Key, Count = g.Count() }).ToList();
foreach (var valRate in valRates)
{
if (valRate.Count > 2)
{
var motoNums = motoRates.Where(r => r.Val == valRate.Val).Select(r => r.Num).OrderBy(num => num).ToList();
var motoNumsStr = string.Join(",", motoNums);
if (rankStr.IndexOf(motoNumsStr) > -1)
{
var disruptOrder = RandomUtil.DisruptOrder(motoNums);
rankStr = rankStr.Replace(motoNumsStr, string.Join(",", disruptOrder));
}
ranks = rankStr.Split(',').Select(r => int.Parse(r)).ToList();
}
}
// 调高中奖几率
ranks = ImproveWinningRate(betRates, ranks);
// 如果存在超过2个以上的连续数字, 如: 10,1,2,3,4,5,6,7,8,9 中的1,2,3,4,5,6,7,8,9 , 则将1,2,3,4,5,6,7,8,9打乱
ranks = ReOrderRanks(betRates, ranks);
return(ranks);
}
