Subset.cardinality():cardinality()是一個sympy Python庫函數,它返回所有可能子集的數量。
用法:
sympy.combinatorics.subset.Subset.cardinality()
返回:
所有可能子集的數量
代碼1:cardinality()示例
# Python code explaining
# SymPy.Subset.cardinality()
# importing SymPy libraries
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.subsets import Subset
# Using from
# sympy.combinatorics.subset.Subsets.cardinality()
# Creating Subset
a = Subset(['c', 'd'], ['geek', 'for', 'c', 'd'])
# cardinality value
print ("Subset a cardinality : ", a.cardinality)
輸出:
Subset a cardinality : 16
代碼2:cardinality()示例
# Python code explaining
# SymPy.Subset.cardinality()
# importing SymPy libraries
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.subsets import Subset
# Using from
# sympy.combinatorics.subset.Subsets.cardinality()
# Creating Subset
a = Subset(['c', 'd'], ['23', 'c', 'd'])
# cardinality value
print ("Subset a cardinality : ", a.cardinality)
輸出:
Subset a cardinality : 8
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