Python SymPy Permutation.from_inversion_vector()用法及代碼示例

排列.from_inversion_vector()：from_inversion_vector()是一個sympy Python庫函數，它從反轉向量返回排列。
反向量–排列中第ith個元素左側的元素個數>第ith個元素給出了反演向量的第i個元素。

用法：

sympy.combinatorics.permutations.Permutation.from_inversion_vector()

返回：
反演向量的排列

代碼1：from_inversion_vector()示例

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

輸出：

vector a – from_inversion_vector form : Permutation([1, 0], size=5)
vector b – from_inversion_vector form : Permutation([6, 5, 4, 3, 0, 1, 2])

代碼2：from_inversion_vector()示例

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

輸出：

vector a – from_inversion_vector form : Permutation([2, 4, 1, 0, 3])

相關用法

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