Python 中的 SymPy | arrange . length()

原文:https://www . geesforgeks . org/sympy-置换-python 中的长度/

arrange . length():length()是一个 sympy Python 库函数，用于查找由排列移动的整数个数。

语法:sympy . combinations .排列.置换. length()

返回:排列移动的整数个数

代码#1:长度()示例

# 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())

输出:

排列 a-长度形式:4 排列 b-长度形式:6

代码#2:长度()示例–2D 置换

# 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())

输出:

排列 a-长度形式:7

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