SymPy | Permutation.length() in Python

SymPy | Permutation.length() in Python

Last Updated : 27 Aug, 2019

Permutation.length() : length() is a sympy Python library function that finds the number of integers moved by the permutation.

Syntax : sympy.combinatorics.permutations.Permutation.length() Return : number of integers moved by the permutation

Code #1 : length() Example

Python3 1=1

# Python code explaining
# SymPy.Permutation.length()

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

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

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

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


print ("Permutation a - length form : ", a.length())
print ("Permutation b - length form : ", b.length())

Output :

Permutation a - length form : 4 Permutation b - length form : 6

Code #2 : length() Example - 2D Permutation

Python3 1=1

# Python code explaining
# SymPy.Permutation.length()

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

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

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


print ("Permutation a - length form : ", a.length())

Output :

Permutation a - length form : 7

SymPy | Permutation.length() in Python

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