Python中的SymPy Permutation.random()

Permutation.random() : random()是一个sympy Python库函数，用于返回长度为’n’的随机排列组合。

语法 : sympy.combinatorics.permutations.Permutation.random()

返回：长度的随机互换

代码 #1 : random() 示例

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

输出 :

Permutation a – random form : (1)
Permutation b – random form : (4)

代码 #2 : random() 例子 – 二维互换

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

输出 :

Permutation a – random form : (0 1 2 3)