SymPy | Python中的 Subset.unrank_binary()

Subset.unrank_binary() ：unrank_binary()是一个 sympy Python库函数，它返回指定等级的二进制有序子集。

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

Return :
the binary ordered subset of the specified rank.

代码 #1：unrank_binary() 示例

# Python code explaining
# SymPy.Subset.unrank_binary()
  
# importing SymPy libraries
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.subsets import Subset
  
# Using from 
# sympy.combinatorics.subset.Subsets.unrank_binary()
  
# Creating Subset
a = Subset.unrank_binary(4, (['geek', 'for', 'c', 'd']))
  
# unrank_binary value
print ("Subset a unrank_binary : ", a.subset)

输出 ：

Subset a unrank_binary : [‘for’]

代码 #2：unrank_binary() 示例

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

输出 ：

Subset a unrank_binary : [2]