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Subset.rank_gray() : rank_gray() is a sympy Python library function that returns the Gray code ranking of the subset.
Syntax :
sympy.combinatorics.subset.Subset.rank_gray()
Return :
Gray code ranking of the subset
Code #1 : rank_gray() Example
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.subsets import Subset
a = Subset(['c', 'd'], ['geek', 'for', 'c', 'd'])
print ("Subset a rank_gray : ", a.rank_gray)
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Output :
Subset a rank_gray : 2
Code #2 : rank_gray() Example
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.subsets import Subset
a = Subset([2, 3, 4], [1, 2, 3, 4, 5])
print ("Subset a rank_gray : ", a.rank_gray)
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Output :
Subset a rank_gray : 11
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