Skip to content

Navigation Menu

Sign in
Appearance settings

Search code, repositories, users, issues, pull requests...

Provide feedback

We read every piece of feedback, and take your input very seriously.

Saved searches

Use saved searches to filter your results more quickly
Sign up
Appearance settings

Commit 8699054

Browse files
committed
Solved.
1 parent eb8c0d9 commit 8699054

File tree

1 file changed

+88
-34
lines changed

1 file changed

+88
-34
lines changed

‎algorithm-1/C#/Solution-a1-3/solution-3.cs‎

Lines changed: 88 additions & 34 deletions
Original file line numberDiff line numberDiff line change
@@ -4,10 +4,25 @@
44
using System.Text;
55

66

7-
Test();
7+
Test1();
8+
Test2();
9+
Test3();
810

11+
static void Test1()
12+
{
13+
Console.WriteLine("==============");
14+
Console.WriteLine("Test2");
15+
Console.WriteLine("_____");
16+
int reqStepCount = 1;
17+
Game game_2 = new("[[1,2,3],[4,0,5]]");
18+
GameState resolvedState = game_2.GetSolution();
19+
Console.WriteLine(resolvedState.ToString());
20+
Console.WriteLine(resolvedState.Status.ToString());
21+
Console.WriteLine($"resolved in {resolvedState.StepCount} steps");
22+
Console.WriteLine($"Test result {(resolvedState.StepCount == reqStepCount ? "passed" : "failed")}.");
23+
}
924

10-
static void Test()
25+
static void Test2()
1126
{
1227
Console.WriteLine("==============");
1328
Console.WriteLine("Test2");
@@ -17,10 +32,23 @@ static void Test()
1732
GameState resolvedState = game_2.GetSolution();
1833
Console.WriteLine(resolvedState.ToString());
1934
Console.WriteLine(resolvedState.Status.ToString());
20-
Console.WriteLine($"resolved in {resolvedState.moveHist.Count} steps");
21-
Console.WriteLine($"Test result {(resolvedState.moveHist.Count == reqStepCount ? "passed" : "failed")}.");
35+
Console.WriteLine($"resolved in {resolvedState.StepCount} steps");
36+
Console.WriteLine($"Test result {(resolvedState.StepCount == reqStepCount ? "passed" : "failed")}.");
2237
}
2338

39+
static void Test3()
40+
{
41+
Console.WriteLine("==============");
42+
Console.WriteLine("Test2");
43+
Console.WriteLine("_____");
44+
int reqStepCount = -1;
45+
Game game_2 = new("[[1,2,3],[5,4,0]]");
46+
GameState resolvedState = game_2.GetSolution();
47+
Console.WriteLine(resolvedState.ToString());
48+
Console.WriteLine(resolvedState.Status.ToString());
49+
Console.WriteLine($"resolved in {resolvedState.StepCount} steps");
50+
Console.WriteLine($"Test result {(resolvedState.StepCount == reqStepCount ? "passed" : "failed")}.");
51+
}
2452

2553
[Flags]
2654
public enum Movements
@@ -40,8 +68,25 @@ public enum StateStatus
4068
}
4169
public class GameState
4270
{
43-
public static int RowNumber = 2;
44-
public static int ColNumber = 3;
71+
public static int rowNumber = 2;
72+
public static int colNumber = 3;
73+
74+
int _stepCount;
75+
public int StepCount
76+
{
77+
get
78+
{
79+
if(Status == StateStatus.FAILED)
80+
{
81+
return -1;
82+
}
83+
return _stepCount;
84+
}
85+
private set
86+
{
87+
_stepCount = value;
88+
}
89+
}
4590
public int[][] Values { get; set; }
4691
public int[] AddressOfVoid { get; set; } = new int[2];
4792
public Movements LastMovementFrom { get; set; }
@@ -57,9 +102,10 @@ public class GameState
57102
/// </remarks>
58103
/// <param name="initialState"></param>
59104
/// <param name="lastMovementFrom"></param>
60-
public GameState(int[][] initialState, Movements lastMovementFrom, List<Movements> movesHistory)
105+
public GameState(int[][] initialState, Movements lastMovementFrom, List<Movements> movesHistory,intt)
61106
{
62107
Status = StateStatus.IN_PROGRESS;
108+
StepCount = t;
63109
Values = new int[initialState.Length][];
64110
LastMovementFrom = lastMovementFrom;
65111
moveHist = new();
@@ -113,6 +159,7 @@ public void Move(Movements movement)
113159
break;
114160
}
115161
moveHist.Add(movement);
162+
StepCount++;
116163
}
117164
public override string ToString()
118165
{
@@ -142,25 +189,25 @@ public void SetAvailableMovements()
142189
{
143190
NextMovements |= Movements.TOP;
144191
}
145-
if (row + 1 < RowNumber)
192+
if (row + 1 < rowNumber)
146193
{
147194
NextMovements |= Movements.BOTTOM;
148195
}
149196
if (col - 1 >= 0)
150197
{
151198
NextMovements |= Movements.LEFT;
152199
}
153-
if (col + 1 < ColNumber)
200+
if (col + 1 < colNumber)
154201
{
155202
NextMovements |= Movements.RIGHT;
156203
}
157204
NextMovements ^= LastMovementFrom; // do not repeat last movement
158205
}
159206
private void _getAddressOfVoid()
160207
{
161-
for (int i = 0; i < RowNumber; i++)
208+
for (int i = 0; i < rowNumber; i++)
162209
{
163-
for (int j = 0; j < ColNumber; j++)
210+
for (int j = 0; j < colNumber; j++)
164211
{
165212
if (Values[i][j] == 0)
166213
{
@@ -176,7 +223,7 @@ class Game
176223
int rowNumber;
177224
int colNumber;
178225
GameState _initState;
179-
public HashSet<string> stateHist { get; set; }
226+
public Dictionary<string,int> stateHist { get; set; }
180227

181228
/// <summary>
182229
/// init state as "n,n,n/n,n,n" or "[[n,n,n],[n,n,n]]"
@@ -221,14 +268,14 @@ public Game(int[][] initialState)
221268
}
222269
public void SetState(int[][] initialState)
223270
{
224-
rowNumber = GameState.RowNumber;
225-
colNumber = GameState.ColNumber;
271+
rowNumber = GameState.rowNumber;
272+
colNumber = GameState.colNumber;
226273
if (!ValidateInput(initialState))
227274
{
228275
Console.WriteLine("Invalid game state as a starting point!");
229276
return;
230277
}
231-
_initState = new GameState(initialState, Movements.NONE, new List<Movements>());
278+
_initState = new GameState(initialState, Movements.NONE, new List<Movements>(),0);
232279
stateHist = new();
233280
}
234281
public GameState GetSolution()
@@ -237,64 +284,71 @@ public GameState GetSolution()
237284
}
238285
private GameState GetSolution(GameState state)
239286
{
240-
if (!stateHist.Add(state.ToString()))
287+
string stateToken = state.ToString();
288+
if (!stateHist.TryAdd(stateToken, state.StepCount))
241289
{
242-
state.Status = StateStatus.FAILED;
243-
return state;
290+
// This state has been passed before
291+
// if this rout reaches this state by longer path, then this path is failed.
292+
// -> The other one is more closer to the solution then this branch, no need to continue on this rout
293+
if(state.StepCount >= stateHist[stateToken])
294+
{
295+
state.Status = StateStatus.FAILED;
296+
return state;
297+
}
298+
stateHist[stateToken] = state.StepCount;
244299
}
245300
if (_isSolved(state))
246301
{
247302
state.Status = StateStatus.SUCCESS;
248303
return state;
249304
}
250305
state.SetAvailableMovements();
251-
List<GameState> newStates = new();
252-
CheckMovement(state, Movements.LEFT, newStates);
253-
CheckMovement(state, Movements.TOP, newStates);
254-
CheckMovement(state, Movements.RIGHT, newStates);
255-
CheckMovement(state, Movements.BOTTOM, newStates);
256-
306+
List<GameState> nextStates = new();
307+
CheckMovement(state, Movements.TOP, nextStates);
308+
CheckMovement(state, Movements.BOTTOM, nextStates);
309+
CheckMovement(state, Movements.RIGHT, nextStates);
310+
CheckMovement(state, Movements.LEFT, nextStates);
257311

258312
GameState resolvedState = state;
259313
int count = int.MaxValue;
260314
bool successFound = false;
261-
foreach (GameState newState in newStates)
315+
foreach (GameState newState in nextStates)
262316
{
263317
GameState newResolvedState = GetSolution(newState);
264318
if (successFound == false && newResolvedState.Status == StateStatus.SUCCESS)
265319
{
266320
successFound = true;
267321
resolvedState = newResolvedState;
268-
count = resolvedState.moveHist.Count;
322+
count = resolvedState.StepCount;
269323
}
270324
else if (successFound && newResolvedState.Status == StateStatus.SUCCESS)
271325
{
272-
if (newResolvedState.moveHist.Count < count)
326+
if (newResolvedState.StepCount < count)
273327
{
274328
resolvedState = newResolvedState;
275-
count = resolvedState.moveHist.Count;
329+
count = resolvedState.StepCount;
276330
}
277331
}
278332
else if(successFound == false)
279333
{
280-
if (newResolvedState.moveHist.Count < count)
334+
if (newResolvedState.StepCount < count)
281335
{
282336
resolvedState = newResolvedState;
283-
count = resolvedState.moveHist.Count;
337+
count = resolvedState.StepCount;
284338
}
285339
}
286340
}
287341
return resolvedState;
288342
}
289-
private void CheckMovement(GameState state, Movements movement, List<GameState> newStates)
343+
private void CheckMovement(GameState state, Movements movement, List<GameState> nexStates)
290344
{
291345
// check availablity
292346
bool isMovementAvailable = state.NextMovements.HasFlag(movement);
293-
if (isMovementAvailable==false) return;
347+
if (!isMovementAvailable) return;
294348
// we return early if this movement is not available
295349
GameState _state;
296-
_state = new GameState(state.Values, state.LastMovementFrom, state.moveHist);
297-
newStates.Add(_state);
350+
_state = new GameState(state.Values, state.LastMovementFrom, state.moveHist,state.StepCount);
351+
nexStates.Add(_state);
298352

299353
_state.Move(movement);
300354
}

0 commit comments

Comments
(0)

AltStyle によって変換されたページ (->オリジナル) /