Python 中的 SymPy | arrangement.unlank_nonlex()
原文:https://www.geesforgeks.org/sympy-置换-unlank_nonlex-in-python/
arrangement.unlank_nonlex():unlank_nonlex()是一个 sympy Python 库函数，是一个不尊重字典顺序的线性时间解开算法。
语法:sympy.combinations.arranges.arrangement.unlank_nonlex()
返回:线性时间解开。
代码# 1:unlank_nonlex()示例
# Python code explaining
# SymPy.Permutation.unrank_nonlex()
# importing SymPy libraries
from sympy.combinatorics.partitions import Partition
from sympy.combinatorics.permutations import Permutation
# Using from
# sympy.combinatorics.permutations.Permutation.unrank_nonlex() method
# creating Permutation
a = Permutation([[2, 0], [3, 1]])
b = Permutation([1, 3, 5, 4, 2, 0])
print ("Permutation a - unrank_nonlex form : ", a.unrank_nonlex(2, 5))
print ("Permutation b - unrank_nonlex form : ", b.unrank_nonlex(1, 6))
输出:
排列 a–unlank_nonlex 形式:(1) 排列 b–unlank_nonlex 形式:(0)
代码# 2:unlank_nonlex()示例
# Python code explaining
# SymPy.Permutation.unrank_nonlex()
# importing SymPy libraries
from sympy.combinatorics.partitions import Partition
from sympy.combinatorics.permutations import Permutation
# Using from
# sympy.combinatorics.permutations.Permutation.unrank_nonlex() method
# creating Permutation
a = Permutation([[2, 4, 0],
[3, 1, 2],
[1, 5, 6]])
print ("Permutation a - unrank_nonlex form : ", a.unrank_nonlex(2, 8))
输出:
排列 a–unlank_nonlex 形式:(0 1)
