Python SymPy Permutation.cardinality()用法及代码示例

Permutation.cardinality()：cardinality()是一个sympy Python库函数，它返回所有可能的排列数。

用法： sympy.combinatorics.permutations.Permutation.cardinality()

返回：所有可能的排列数

代码1：cardinality()示例

# Python code explaining 
# SymPy.Permutation.cardinality() 
  
# importing SymPy libraries 
from sympy.combinatorics.partitions import Partition 
from sympy.combinatorics.permutations import Permutation 
  
# Using from sympy.combinatorics.permutations.Permutation.cardinality() method  
  
# creating Permutation 
a = Permutation([[2, 0], [3, 1]]) 
  
b = Permutation([1, 3, 5, 4, 2, 0]) 
  
  
print ("Permutation a - cardinality form : ", a.cardinality) 
print ("Permutation b - cardinality form : ", b.cardinality)

输出：

Permutation a – cardinality form : 24
Permutation b – cardinality form : 720

代码2：cardinality()示例– 2D排列

# Python code explaining 
# SymPy.Permutation.cardinality() 
  
# importing SymPy libraries 
from sympy.combinatorics.partitions import Partition 
from sympy.combinatorics.permutations import Permutation 
  
# Using from sympy.combinatorics.permutations.Permutation.cardinality() method  
  
# creating Permutation 
a = Permutation([[2, 4, 0],  
                 [3, 1, 2], 
                 [1, 5, 6]]) 
  
  
print ("Permutation a - cardinality form : ", a.cardinality)

输出：

Permutation a – cardinality form : 5040

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注：本文由纯净天空筛选整理自noobestars101大神的英文原创作品 Python | SymPy Permutation.cardinality() method。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。