Python 中的 SymPy | arrange.length()
arrange.length():length()是一个 sympy Python 库函数，用于查找由排列移动的整数个数。
语法:sympy.combinations .排列.置换. length()
返回:排列移动的整数个数
代码#1:长度()示例
# Python code explaining
# SymPy.Permutation.length()
# importing SymPy libraries
from sympy.combinatorics.partitions import Partition
from sympy.combinatorics.permutations import Permutation
# Using from sympy.combinatorics.permutations.Permutation.length() method
# creating Permutation
a = Permutation([[2, 0], [3, 1]])
b = Permutation([1, 3, 5, 4, 2, 0])
print ("Permutation a - length form : ", a.length())
print ("Permutation b - length form : ", b.length())
输出:
排列 a-长度形式:4 排列 b-长度形式:6
代码#2:长度()示例–2D 置换
# Python code explaining
# SymPy.Permutation.length()
# importing SymPy libraries
from sympy.combinatorics.partitions import Partition
from sympy.combinatorics.permutations import Permutation
# Using from sympy.combinatorics.permutations.Permutation.length() method
# creating Permutation
a = Permutation([[2, 4, 0],
[3, 1, 2],
[1, 5, 6]])
print ("Permutation a - length form : ", a.length())
输出:
排列 a-长度形式:7
