SymPy | Python中的 Subset.ksubsets()

Subset.ksubsets() ：ksubsets()是一个 sympy Python库函数，它按字典顺序返回大小为 k 的子集。

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

Return :
the subsets of size k in lexicographic order.

代码 #1：ksubsets() 示例

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

输出 ：

Subset a ksubsets : [‘for’, ‘c’]

代码 #2：ksubsets() 示例

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

输出 ：

Subset a ksubsets : [2, 3]