Created
January 20, 2020 16:47
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| class Node: | |
| parent = None | |
| def __init__(self,state): | |
| self.state = state | |
| def setParent(self,parent): | |
| self.parent = parent | |
| def BackTrack(p): | |
| count=0 | |
| while(p.parent!=None): | |
| print(p.state) | |
| p = p.parent | |
| count+=1 | |
| print(p.state) | |
| print(count) | |
| def checkInClose(z,close): | |
| for i in close: | |
| if i.state==z: | |
| return False | |
| return True | |
| def MoveGen(p,open1,close): | |
| li = p.state | |
| pos = li.index(0) | |
| for i in range(-2,3): | |
| k = pos + i | |
| z = li.copy() | |
| if k>=0 and k<=6 and k!=pos: | |
| z[pos],z[k] = z[k],z[pos] | |
| # print(z) | |
| if checkInClose(z,close): | |
| stump = Node(z) | |
| stump.setParent(p) | |
| open1.append(stump) | |
| init_state = [1,1,1,0,2,2,2] | |
| goal_state = [2,2,2,0,1,1,1] | |
| root = Node(init_state) | |
| open1 = [root] | |
| close = [] | |
| while len(open1)>0: | |
| p = open1[-1] | |
| close.append(open1[-1]) | |
| open1.pop(-1) | |
| if p.state == goal_state: | |
| BackTrack(p) | |
| break | |
| else: | |
| MoveGen(p,open1,close) | |
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