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* minimax.py minimax algorithm is used for game like tic tac toe. It traces the path and selects the optimal move. * minimax.py Minimax is used in decision making and game theory to find the optimal move for a player, when your opponent also plays optimally. It is widely used in games like Tic-Tac-Toe, Chess. * Delete minimax.py * Update minimax.py * Minimax is a backtracking algorithm that is used in game theory to find the optimal move for a player, assuming that your opponent also plays optimally
29 lines
996 B
Python
29 lines
996 B
Python
import math
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''' Minimax helps to achieve maximum score in a game by checking all possible moves
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depth is current depth in game tree.
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nodeIndex is index of current node in scores[].
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if move is of maximizer return true else false
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leaves of game tree is stored in scores[]
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height is maximum height of Game tree
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'''
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def minimax (Depth, nodeIndex, isMax, scores, height):
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if Depth == height:
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return scores[nodeIndex]
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if isMax:
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return (max(minimax(Depth + 1, nodeIndex * 2, False, scores, height),
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minimax(Depth + 1, nodeIndex * 2 + 1, False, scores, height)))
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return (min(minimax(Depth + 1, nodeIndex * 2, True, scores, height),
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minimax(Depth + 1, nodeIndex * 2 + 1, True, scores, height)))
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if __name__ == "__main__":
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scores = [90, 23, 6, 33, 21, 65, 123, 34423]
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height = math.log(len(scores), 2)
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print("Optimal value : ", end = "")
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print(minimax(0, 0, True, scores, height))
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