SymPy | Subset.rank_gray() in Python

SymPy | Subset.rank_lexicographic() in Python

Last Updated : 28 Aug, 2019

Subset.rank_lexicographic() : rank_lexicographic() is a sympy Python library function that returns the lexicographic ranking of the subset.

Syntax : sympy.combinatorics.subset.Subset.rank_lexicographic() Return : the lexicographic ranking of the subset.

Code #1 : rank_lexicographic() Example

Python3 1=1

# Python code explaining
# SymPy.Subset.rank_lexicographic()

# importing SymPy libraries
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.subsets import Subset

# Using from 
# sympy.combinatorics.subset.Subsets.rank_lexicographic()

# Creating Subset
a = Subset(['c', 'd'], ['geek', 'for', 'c', 'd'])

# rank_lexicographic value
print ("Subset a rank_lexicographic : ", a.rank_lexicographic)

Output :

Subset a rank_lexicographic : 14

Code #2 : rank_lexicographic() Example

Python3 1=1

# Python code explaining
# SymPy.Subset.rank_lexicographic()

# importing SymPy libraries
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.subsets import Subset

# Using from 
# sympy.combinatorics.subset.Subsets.rank_lexicographic()

# Creating Subset
a = Subset([2, 3, 4], [1, 2, 3, 4, 5])

# rank_lexicographic value
print ("Subset a rank_lexicographic : ", a.rank_lexicographic)

Output :

Subset a rank_lexicographic : 19

SymPy | Subset.rank_gray() in Python

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