Python 中的 SymPy | arrange.rank_trotterjohnson()
原文:https://www.geeksforgeeks.orgpy-置换-rank_trotterjohnson-in-python/
arrangement.rank_trotterjohnson():rank_trotterjohnson()是一个 sympy Python 库函数，返回非字典序排列的 trotterjohnson 秩。
语法:sympy.combinations.arranges.arrangement.rank_trotterjohnson()
返回:字典序 rank_trotterjohnson 中的下一个排列
代码#1 : rank_trotterjohnson()示例
# 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())
输出:
排列 a–rank_trotterjohnson 形式:10 排列 b–rank_trotterjohnson 形式:555
代码#2 : rank_trotterjohnson()示例–2D 置换
# 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())
输出:
排列 a–rank_trotterjohnson 形式:2420
