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SymPy | Permutation.rank_trotterjohnson() in Python

Last Updated : 27 Aug, 2019
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Permutation.rank_trotterjohnson() : rank_trotterjohnson() is a sympy Python library function that returns the trotter johnson rank of non lexicographical permutation.
Syntax : sympy.combinatorics.permutations.Permutation.rank_trotterjohnson() Return : next permutation in lexicographical rank_trotterjohnson
Code #1 : rank_trotterjohnson() Example Python3 1=1
# Python code explaining
# SymPy.Permutation.rank_trotterjohnson()

# importing SymPy libraries
from sympy.combinatorics.partitions import Partition
from sympy.combinatorics.permutations import Permutation

# Using from 
# sympy.combinatorics.permutations.Permutation.rank_trotterjohnson() method 

# creating Permutation
a = Permutation([[2, 0], [3, 1]])

b = Permutation([1, 3, 5, 4, 2, 0])


print ("Permutation a - rank_trotterjohnson form : ", a.rank_trotterjohnson())
print ("Permutation b - rank_trotterjohnson form : ", b.rank_trotterjohnson())
Output :
Permutation a - rank_trotterjohnson form : 10 Permutation b - rank_trotterjohnson form : 555
Code #2 : rank_trotterjohnson() Example - 2D Permutation Python3 1=1
# Python code explaining
# SymPy.Permutation.rank_trotterjohnson()

# importing SymPy libraries
from sympy.combinatorics.partitions import Partition
from sympy.combinatorics.permutations import Permutation

# Using from 
# sympy.combinatorics.permutations.Permutation.rank_trotterjohnson() method 

# creating Permutation
a = Permutation([[2, 4, 0], 
                 [3, 1, 2],
                 [1, 5, 6]])


print ("Permutation a - rank_trotterjohnson form : ", a.rank_trotterjohnson())
Output :
Permutation a - rank_trotterjohnson form : 2420

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