SymPy | Python中的 Subset.rank_gray()

Subset.rank_gray() : rank_gray()是一个 sympy Python库函数，它返回子集的格雷码排名。

Syntax :
sympy.combinatorics.subset.Subset.rank_gray()

Return :
Gray code ranking of the subset

代码 #1：rank_gray() 示例

# Python code explaining
# SymPy.Subset.rank_gray()
  
# importing SymPy libraries
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.subsets import Subset
  
# Using from 
# sympy.combinatorics.subset.Subsets.rank_gray()
  
# Creating Subset
a = Subset(['c', 'd'], ['geek', 'for', 'c', 'd'])
  
# rank_gray value
print ("Subset a rank_gray : ", a.rank_gray)

输出 ：

Subset a rank_gray : 2

代码 #2：rank_gray() 示例

# Python code explaining
# SymPy.Subset.rank_gray()
  
# importing SymPy libraries
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.subsets import Subset
  
# Using from 
# sympy.combinatorics.subset.Subsets.rank_gray()
  
# Creating Subset
a = Subset([2, 3, 4], [1, 2, 3, 4, 5])
  
# rank_gray value
print ("Subset a rank_gray : ", a.rank_gray)

输出 ：

Subset a rank_gray : 11