private bool _ALSXZ_SinglyLinked(UALS UA, UALS UB, int RCC, int EnoB) // *=*=* SinglyLinked subroutine *=*=*
{
bool solF = false;
foreach (var no in EnoB.IEGet_BtoNo())
{
int EnoBx = 1 << no;
Bit81 UEz = new Bit81(); //Covered cells
foreach (var P in UA.UCellLst.Where(p => (p.FreeB & EnoBx) > 0))
{
UEz.BPSet(P.rc);
}
foreach (var P in UB.UCellLst.Where(p => (p.FreeB & EnoBx) > 0))
{
UEz.BPSet(P.rc);
}
Bit81 Elm = (new Bit81(pBDL, EnoBx)) - (UA.B81 | UB.B81); //Scan Cells
foreach (var rc in Elm.IEGet_rc())
{
if ((UEz - ConnectedCells[rc]).IsZero())
{
pBDL[rc].CancelB |= EnoBx; solF = true;
}
}
}
return(solF);
}
private void _SolResult_ALSChain(Stack <UALSPair> SolStack)
{
string st = "ALS Chain";
if (SolInfoB)
{
int nc = 0, noB;
Color cr;
var SSrev = SolStack.ToList();
SSrev.Reverse();
foreach (var LKA in SSrev)
{
noB = (1 << LKA.nRCC);
UALS UA = LKA.ALSpre;
cr = _ColorsLst[nc++];
UA.UCellLst.ForEach(P => P.SetNoBBgColor(noB, AttCr, cr));
st += $"\r ALS {nc}: {UA.ToStringRCN()} -> #{(LKA.nRCC+1)}";
}
var LKB = SSrev.Last();
noB = (1 << LKB.nRCC);
cr = _ColorsLst[nc];
LKB.ALSnxt.UCellLst.ForEach(P => P.SetNoBBgColor(noB, AttCr, cr));
st += $"\r ALS {(nc+1)}: {LKB.ALSnxt.ToStringRCN()}";
ResultLong = st;
}
Result = "ALS Chain";
}
private void SuDoQueEx_SolResult(UALS ISPB, UALS ISPR)
{
Result = "SueDeCoq";
if (SolInfoB)
{
ISPB.UCellLst.ForEach(P => P.SetNoBBgColor(P.FreeB, AttCr, SolBkCr));
ISPR.UCellLst.ForEach(P => P.SetNoBBgColor(P.FreeB, AttCr, SolBkCr));
string ptmp = "";
ISPB.UCellLst.ForEach(p => { ptmp += $" {p.rc.ToRCString()}"; });
string po = "\r Cells";
if (ISPB.Level == 1)
{
po += "(block) ";
}
else
{
po += $"-{ISPB.Level}(block)";
}
po += $": {ISPB.ToStringRCN()}";
po += "\r Cells" + ((ISPR.Level == 1)? "": "-2");
po += ((ISPR.tfx < 9)? "(row)":"(col)");
po += ((ISPR.Level == 1)? " ": " ");
po += ": " + ISPR.ToStringRCN();
ResultLong = "SueDeCoq" + po;
}
}
public ALSLink(UALS ALSbase, UGrCells UGCellsA, UGrCells UGCellsB, int tfx)
{
this.ALSbase = ALSbase;
this.UGCellsA = UGCellsA;
this.UGCellsB = UGCellsB;
this.tfx = tfx;
this.type = S;
}
//Link by ALS-ALS RCC
public void QSearch_ALS2ALS_Link(bool doubly)
{
if (ALSLst == null)
{
PrepareALSLinkMan(1);
}
if (ALS2ALS_Link)
{
return;
}
ALS2ALS_Link = true;
var cmb = new Combination(ALSLst.Count, 2);
while (cmb.Successor())
{
UALS UA = ALSLst[cmb.Index[0]];
UALS UB = ALSLst[cmb.Index[1]];
int RCC = Get_AlsAlsRcc(UA, UB);
if (RCC == 0)
{
continue;
}
if (!doubly && RCC.BitCount() != 1)
{
continue;
}
if (UA.ConnLst == null)
{
UA.ConnLst = new List <UALSPair>();
}
if (UB.ConnLst == null)
{
UB.ConnLst = new List <UALSPair>();
}
foreach (var no in RCC.IEGet_BtoNo())
{
UALSPair LKX = new UALSPair(UA, UB, RCC, no);
if (!UA.ConnLst.Contains(LKX))
{
UA.ConnLst.Add(LKX);
}
LKX = new UALSPair(UB, UA, RCC, no);
if (!UB.ConnLst.Contains(LKX))
{
UB.ConnLst.Add(LKX);
}
}
}
}
//RCC
public int Get_AlsAlsRcc(UALS UA, UALS UB)
{
if ((UA.FreeB & UB.FreeB) == 0)
{
return(0); //no common digit
}
if (!(UA.B81 & UB.B81).IsZero())
{
return(0); //overlaps
}
if ((UA.rcbFilter & UB.B81).IsZero())
{
return(0); //no contact
}
int RCC = 0, Dir = UA.rcbDir & UB.rcbDir;
//[definition] rcbDir |= ( (1<<(P.b+18)) | (1<<(P.c+9)) | (1<<(P.r)) );
foreach (int tfx in Dir.IEGet_BtoNo(27))
{
Bit81 ComH = pHouseCells[tfx];
int FrAi = 0, FrAo = 0, FrBi = 0, FrBo = 0;
UA.UCellLst.ForEach(P => {
if (ComH.IsHit(P.rc))
{
FrAi |= P.FreeB;
}
else
{
FrAo |= P.FreeB;
}
});
UB.UCellLst.ForEach(P => {
if (ComH.IsHit(P.rc))
{
FrBi |= P.FreeB;
}
else
{
FrBo |= P.FreeB;
}
});
RCC |= (FrAi.DifSet(FrAo)) & (FrBi.DifSet(FrBo)); //RCC
}
return(RCC);
}
public int CompareTo(object obj)
{
UALS UB = obj as UALS;
if (this.Level != UB.Level)
{
return(this.Level - UB.Level);
}
if (this.Size != UB.Size)
{
return(this.Size - UB.Size);
}
if (this.tfx != UB.tfx)
{
return(this.tfx - UB.tfx);
}
return(this.ID - UB.ID);
}
private void ALSXYWing_SolResult(UALS UA, UALS UB, UALS UC, int RccAC, int RccBC)
{
string st = "ALS XY-Wing ";
if (SolInfoB)
{
UA.UCellLst.ForEach(P => P.SetNoBBgColor(RccAC, AttCr, SolBkCr));
UB.UCellLst.ForEach(P => P.SetNoBBgColor(RccBC, AttCr, SolBkCr2));
UC.UCellLst.ForEach(P => P.SetNoBBgColor(RccAC | RccBC, AttCr, SolBkCr3));
st += "\r ALS A: " + UA.ToStringRCN();
st += "\r ALS B: " + UB.ToStringRCN();
st += "\r ALS C: " + UC.ToStringRCN();
st += "\r RCC AC: #" + RccAC.ToBitStringN(9);
st += "\r RCC BC: #" + RccBC.ToBitStringN(9);
ResultLong = st;
}
Result = "ALS XY-Wing";
}
private void _SetGroupedLink(UALS P, UGrCells GS, UGrCells GD, int tfx)
{
ALSLink ALSLK = new ALSLink(P, GS, GD, tfx);
if (AlsInnerLink == null)
{
AlsInnerLink = new List <ALSLink>();
}
if (AlsInnerLink.Count > 0)
{
int ix = AlsInnerLink.FindIndex(Q => (Q.Equals(ALSLK)));
if (ix >= 0)
{
return;
}
}
AlsInnerLink.Add(ALSLK);
//WriteLine( $"ALSLink {GS.GCToString()} -> tfx:{tfx} {GD.GCToString()}" );
}
private bool _Search_ALSChain(UALSPair LK0, UALSPair LKpre, Stack <UALSPair> SolStack, int szCtrl, ref bool limitF)
{
int nRccPre = LKpre.nRCC;
foreach (var LKnxt in LKpre.ALSnxt.ConnLst.Where(p => (p.nRCC != nRccPre)))
{
UALS UAnxt = LKnxt.ALSnxt; //Next connected ALS
if (!UAnxt.singly)
{
continue;
}
int szCtrlX = szCtrl - UAnxt.Size; //ChainsSize:Accumulation of ALS size
if (szCtrlX < 0)
{
limitF = true; return(false);
} //Upper limit of ChainsSize has been exceeded
if (!(LKpre.rcUsed & UAnxt.B81).IsZero())
{
continue; //Stop if the next node has been searched
}
{ //===== Extend the link and try ahead =====
SolStack.Push(LKnxt); //Push the next Link onto the stack
Bit81 rcUsedNxt = LKpre.rcUsed | UAnxt.B81;
if (_CheckSolution_ALSChain(LK0, LKnxt, rcUsedNxt, SolStack))
{
return(true); //Check the solution
}
LKnxt.rcUsed = rcUsedNxt; //Used cells in the current phase of recursive search
if (_Search_ALSChain(LK0, LKnxt, SolStack, szCtrlX, ref limitF))
{
return(true); //Recursive Search
}
SolStack.Pop(); //Pop:Return trial
}
}
return(false);
}
private void ALSXZ_SolResult(int RCC, UALS UA, UALS UB)
{
string st = "ALS-XZ " + ((RCC.BitCount() == 1)? "(Singly Linked)": "(Doubly Linked)");
Result = st;
if (SolInfoB)
{
foreach (var P in UA.UCellLst)
{
P.SetNoBBgColor(P.FreeB, AttCr2, SolBkCr);
}
foreach (var P in UB.UCellLst)
{
P.SetNoBBgColor(P.FreeB, AttCr2, SolBkCr2);
}
st += "\r ALS1: " + UA.ToStringRCN();
st += "\r ALS2: " + UB.ToStringRCN();
st += "\r RCC: #" + RCC.ToBitStringN(9);
ResultLong = st;
}
}
public UALSPair(UALS ALSpre, UALS ALSnxt, int RCC, int nRCC, Bit81 rcB = null)
{
this.ALSpre = ALSpre; this.ALSnxt = ALSnxt; this.RCC = RCC; this.nRCC = nRCC;
this.rcUsed = rcB ?? (ALSpre.B81 | ALSnxt.B81);
}
public IEnumerable <UCell> _GetRestCells(UALS ISP, int selB)
{
return(pBDL.IEGetCellInHouse(ISP.tfx, selB).Where(P => !ISP.B81.IsHit(P.rc)));
}
public int PrepareALSLinkMan(int nPls) //QALS_Search
{
if (ALSLst != null)
{
return(ALSLst.Count());
}
int ALSSizeMax = GNPXApp000.ALSSizeMax;
int mx = 0; //tentative ID, reset later
ALSLst = new List <UALS>();
List <int> singlyMan = new List <int>();
for (int nn = 1; nn <= nPls; nn++)
{
for (int tf = 0; tf < 27; tf++)
{
List <UCell> Pcells = pBDL.IEGetCellInHouse(tf, 0x1FF).ToList();
if (Pcells.Count < 1)
{
continue;
}
int szMax = Min(Pcells.Count, 8 - nn);
szMax = Min(szMax, ALSSizeMax); //ALS size maximum value
for (int sz = 1; sz <= szMax; sz++)
{
Combination cmb = new Combination(Pcells.Count, sz);
while (cmb.Successor())
{
int FreeB = 0;
Array.ForEach(cmb.Index, q => FreeB |= Pcells[q].FreeB);
if (FreeB.BitCount() != (sz + nn))
{
continue;
}
List <UCell> Q = new List <UCell>();
Array.ForEach(cmb.Index, q => Q.Add(Pcells[q]));
//Check for existence of ALS with the same configuration
UALS UA = new UALS(mx++, sz, tf, FreeB, Q);
if (!UA.IsPureALS())
{
continue;
}
int hs = UA.GetHashCode();
if (singlyMan.Any(p => p == hs))
{
UA.singly = false;
}
else
{
singlyMan.Add(hs);
}
ALSLst.Add(UA);
}
}
}
}
ALSLst.Sort();
int ID = 0;
ALSLst.ForEach(P => P.ID = ID++);
// ALSLst.ForEach(P=>WriteLine(P));
return(ALSLst.Count());
}
private bool _ALSXZ_DoublyLinked(UALS UA, UALS UB, int RCC) // *=*=* DoublyLinked subroutine *=*=*
//----- RCC -----
{
Bit81 UEz = new Bit81(); //Covered cells
bool solF = false;
foreach (int no in RCC.IEGet_BtoNo())
{
int noB = 1 << no;
UEz.Clear();
foreach (var P in UA.UCellLst.Where(p => (p.FreeB & noB) > 0))
{
UEz.BPSet(P.rc);
}
foreach (var P in UB.UCellLst.Where(p => (p.FreeB & noB) > 0))
{
UEz.BPSet(P.rc);
}
Bit81 Elm = (new Bit81(pBDL, noB)) - (UA.B81 | UB.B81); //Scan Cells
foreach (var rc in Elm.IEGet_rc())
{
if ((UEz - ConnectedCells[rc]).IsZero())
{
pBDL[rc].CancelB |= noB; solF = true;
}
}
}
//----- ALS element digit other than RCC -----
int nRCC = UA.FreeB.DifSet(RCC);
foreach (int no in nRCC.IEGet_BtoNo())
{
int noB = 1 << no;
UEz.Clear();
foreach (var P in UA.UCellLst.Where(p => (p.FreeB & noB) > 0))
{
UEz.BPSet(P.rc);
}
Bit81 Elm = (new Bit81(pBDL, noB)) - (UA.B81 | UB.B81); //Scan Cells
foreach (var rc in Elm.IEGet_rc())
{
if ((UEz - ConnectedCells[rc]).IsZero())
{
pBDL[rc].CancelB |= noB; solF = true;
}
}
}
nRCC = UB.FreeB.DifSet(RCC);
foreach (int no in nRCC.IEGet_BtoNo())
{
int noB = 1 << no;
UEz.Clear();
foreach (var P in UB.UCellLst.Where(p => (p.FreeB & noB) > 0))
{
UEz.BPSet(P.rc);
}
Bit81 Elm = (new Bit81(pBDL, noB)) - (UA.B81 | UB.B81); //Scan Cells
foreach (var rc in Elm.IEGet_rc())
{
if ((UEz - ConnectedCells[rc]).IsZero())
{
pBDL[rc].CancelB |= noB; solF = true;
}
}
}
return(solF);
}
private bool _ALSXZsub(int sz)
{
if (ALSMan.ALSLst.Count < 2)
{
return(false);
}
var cmb = new Combination(ALSMan.ALSLst.Count, 2);
int nxt = 99;
while (cmb.Successor(nxt)) //Select two ALSs
{
UALS UA = ALSMan.ALSLst[cmb.Index[0]];
nxt = 0; if (!UA.singly || UA.Size == 1 || UA.Size > (sz - 2))
{
continue;
}
UALS UB = ALSMan.ALSLst[cmb.Index[1]];
nxt = 1; if (!UB.singly || UB.Size == 1 || (UA.Size + UB.Size) != sz)
{
continue;
}
int RCC = ALSMan.Get_AlsAlsRcc(UA, UB); //Common numbers, House contact, Without overlap
if (RCC == 0)
{
continue;
}
if (RCC.BitCount() == 1) //===== Singly Linked =====
{
int EnoB = (UA.FreeB & UB.FreeB).DifSet(RCC); //Exclude candidate digit
if (EnoB > 0 && _ALSXZ_SinglyLinked(UA, UB, RCC, EnoB))
{
SolCode = 2;
ALSXZ_SolResult(RCC, UA, UB);
if (__SimpleAnalizerB__)
{
return(true);
}
if (!pAnMan.SnapSaveGP(true))
{
return(true);
}
}
}
else if (RCC.BitCount() == 2) //===== Doubly Linked =====
{
if (_ALSXZ_DoublyLinked(UA, UB, RCC))
{
SolCode = 2;
ALSXZ_SolResult(RCC, UA, UB);
if (__SimpleAnalizerB__)
{
return(true);
}
if (!pAnMan.SnapSaveGP(true))
{
return(true);
}
}
}
}
return(false);
}
private bool _ALSXYWingSub(int szT)
{
//(ALS sorted by size)
foreach (var UC in ALSMan.ALSLst.Where(p => p.Size <= szT - 2))
{
if (!UC.singly)
{
continue;
}
int szS = szT - UC.Size;
UALS UA, UB, UApre = null;
int nxt = 0, RccAC = -1, RccBC = -1;
var cmb = new Combination(ALSMan.ALSLst.Count, 2);
while (cmb.Successor(nxt))
{
nxt = 0;
UA = ALSMan.ALSLst[cmb.Index[0]];
if (!UA.singly || UA == UC || UA.Size > szS - 1)
{
continue;
}
if (UA != UApre)
{
RccAC = ALSMan.Get_AlsAlsRcc(UA, UC); //RCC
if (RccAC.BitCount() != 1)
{
continue;
}
UApre = UA;
}
UB = ALSMan.ALSLst[cmb.Index[1]];
if (!UB.singly || UB.Size > (szS - UA.Size))
{
continue; //Skip using "Sort by size"
}
nxt = 1;
if (UB == UC || UB.Size != (szS - UA.Size))
{
continue;
}
if (!(UA.B81 & UB.B81).IsZero())
{
continue; //Overlap
}
RccBC = ALSMan.Get_AlsAlsRcc(UB, UC); //RCC
if (RccBC.BitCount() != 1)
{
continue;
}
if (RccAC == RccBC)
{
continue;
}
int EFrB = (UA.FreeB & UB.FreeB).DifSet(RccAC | RccBC);
if (EFrB == 0)
{
continue;
}
foreach (var no in EFrB.IEGet_BtoNo())
{
int noB = (1 << no);
Bit81 UE = new Bit81();
foreach (var P in UA.UCellLst.Where(p => (p.FreeB & noB) > 0))
{
UE.BPSet(P.rc);
}
foreach (var P in UB.UCellLst.Where(p => (p.FreeB & noB) > 0))
{
UE.BPSet(P.rc);
}
Bit81 TBD = (new Bit81(pBDL, noB)) - (UA.B81 | UB.B81 | UC.B81);
foreach (var rc in TBD.IEGet_rc())
{
if (!(UE - ConnectedCells[rc]).IsZero())
{
continue;
}
pBDL[rc].CancelB = noB; SolCode = 2;
}
if (SolCode > 0) //===== ALS XY-Wing found =====
{
ALSXYWing_SolResult(UA, UB, UC, RccAC, RccBC);
if (__SimpleAnalizerB__)
{
return(true);
}
if (!pAnMan.SnapSaveGP(true))
{
return(true);
}
}
}
}
}
return(false);
}
public readonly int nRCC = -1; //no:0...8(In the case of doubly, make links individually)
public LinkCellALS(UCell UC, UALS ALS, int nRCC)
{
this.UC = UC; this.ALS = ALS; this.nRCC = nRCC;
}