forked from kalmar/DALGLI0
zad 2.
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68
zad2.py
Normal file
68
zad2.py
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def modulo(x,n):
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for i in range(len(x)):
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x[i] = x[i] % n
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return x
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def iloczyn(f,g,n):
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wynik = [0]*(len(f)+len(g)-1)
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for i in range(len(f)):
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for j in range(len(g)):
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wynik[i+j] += f[i]*g[j]
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return modulo(wynik,n)
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def liczmod(a,x,n):
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for i in range(n):
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if( (a*i) % n == x):
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return(i)
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return(-1)
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def sumujmod(a,b,n):
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if(len(a) < len(b)):
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wynik = b
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for i in range(len(a)):
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wynik[i] += a[i]
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else:
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wynik = a
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for i in range(len(b)):
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wynik[i] += b[i]
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return modulo(wynik,n)
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def redukcjazer(x):
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while x and x[-1] is 0:
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x.pop()
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return(x)
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def klasaReszt(f,g,n):
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wynik = f
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mnoznik = [0] * (len(f)-len(g)+2)
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for i in range(len(f)):
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if(liczmod(g[len(g)-1],wynik[len(f)-1-i],n) == -1):
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return("DivisionError")
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if(i > len(f)-len(g)):
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return redukcjazer(modulo(wynik,n))
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else:
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mnoznik.pop()
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mnoznik.pop()
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mnoznik.append(-1*liczmod(g[len(g)-1],wynik[len(f)-1-i],n))
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wynik = sumujmod(wynik, iloczyn(g, mnoznik ,n) ,n)
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def nwd(a,b,n):
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while(b != []):
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if(klasaReszt(a,b,n)):
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return "DivisionError"
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c = klasaReszt(a,b,n)
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a = b
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b = c
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return modulo(a,n)
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def main():
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n = int(input("Podaj n: "))
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print("R[x] dla R = Z/"+str(n))
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f = eval(input("Podaj f w formacie listy np: [1,1, 0,1]: "))
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g = eval(input("Podaj f w formacie listy np: [1, 1,0,1]: "))
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print(iloczyn(f,g,n))
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print(klasaReszt(f,g,n))
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print(nwd(f,g,n))
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if __name__ == "__main__":
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main()
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