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65 lines
2.0 KiB
65 lines
2.0 KiB
from File import File_chaine as File
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from Pile import Pile_chaine as Pile
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class Expression:
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def __init__(self, valeur, gauche=None, droite=None):
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self.valeur = valeur
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self.gauche = gauche
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self.droite = droite
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def evalue(self):
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if type(self.valeur) == int:
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return self.valeur
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if self.valeur == '+':
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return self.gauche.evalue() + self.droite.evalue()
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if self.valeur == '*':
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return self.gauche.evalue() * self.droite.evalue()
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if self.valeur == '/':
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return self.gauche.evalue() / self.droite.evalue()
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if self.valeur == '-':
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return self.gauche.evalue() - self.droite.evalue()
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def __str__(self):
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if type(self.valeur) == int:
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return str(self.valeur)
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if self.valeur == '+':
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return "("+ str (self.gauche) + "+" + str (self.droite) + ")"
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if self.valeur == '*':
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return "("+ str (self.gauche) + "*" + str (self.droite) + ")"
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if self.valeur == '/':
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return "("+ str (self.gauche) + "/" + str (self.droite) + ")"
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if self.valeur == '-':
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return "("+ str (self.gauche) + "-" + str (self.droite) + ")"
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if __name__ =="__main__":
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e = Expression('*',
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Expression(6, None, None),
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Expression('+',
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Expression(4, None, None),
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Expression(3, None, None)
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)
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)
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class Conversion:
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lst = [self.valeur,self.gauche, self.droite]
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def npi2tree (lst):
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"""fonction npi2tree prenant en paramètre une liste correspondant à l’expression en notation
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polonaise inversée et renvoyant l’arbre (de type Expression) correspondant"""
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p = Pile(lst)
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for i in lst ():
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# if + or * :
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# else :
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# return
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