Python 中的 SymPy | arrange.rank()

原文:https://www.geeksforgeeks.orgpy-置换-rank-in-python/

arrange.rank():rank()是一个 sympy Python 库函数，返回排列的字典排序。

语法:sympy.combinations.arranges.arrange.rank()

返回:排列的字典顺序

代码#1:排名()示例

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

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

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

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

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

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

输出:

排列 a–排列形式:16 排列 b–排列形式:191

代码#2:秩()示例–2D 置换

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

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

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

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

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

输出:

排列 a-等级形式:2461

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