Python 中的 SymPy | arrangement.transpositions()
原文:https://www.geesforgeks.org/sympy-置换-transpositions-in-python/
replacement.transpositions():transpositions()是一个 sympy Python 库函数,它返回分解成置换列表的置换。将置换表示为置换的乘积总是可能的。
语法:组合学.排列.置换.置换()
返回:置换分解成置换列表
代码#1:换位()示例
# Python code explaining
# SymPy.Permutation.transpositions()
# importing SymPy libraries
from sympy.combinatorics.partitions import Partition
from sympy.combinatorics.permutations import Permutation
# Using from
# sympy.combinatorics.permutations.Permutation.transpositions() method
# creating Permutation
a = Permutation([[2, 0], [3, 1]])
b = Permutation([1, 3, 5, 4, 2, 0])
print ("Permutation a - transpositions form : ", a.transpositions())
print ("Permutation b - transpositions form : ", b.transpositions())
输出:
置换 a–置换形式:[(0,2),(1,3)] 置换 b–置换形式:[(0,5),(0,2),(0,4),(0,3),(0,1)]
代码#2:换位()示例
# Python code explaining
# SymPy.Permutation.transpositions()
# importing SymPy libraries
from sympy.combinatorics.partitions import Partition
from sympy.combinatorics.permutations import Permutation
# Using from
# sympy.combinatorics.permutations.Permutation.transpositions() method
# creating Permutation
a = Permutation([[2, 4, 0],
[3, 1, 2],
[1, 5, 6]])
print ("Permutation a - transpositions form : ", a.transpositions())
输出:
置换 a–置换形式:[(0,4),(0,2),(0,1),(0,6),(0,5),(0,3)]