SymPy | Python中的 Permutation.runs()

Permutation.runs() ：runs()是一个 sympy Python库函数，它返回排列的运行。

运行 = 排列中的升序

Syntax : sympy.combinatorics.permutations.Permutation.runs()

Return : runs of the permutation.

代码 #1：runs() 示例

# Python code explaining
# SymPy.Permutation.runs()
  
# importing SymPy libraries
from sympy.combinatorics.partitions import Partition
from sympy.combinatorics.permutations import Permutation
  
# Using from sympy.combinatorics.permutations.Permutation.runs() method 
  
# creating Permutation
a = Permutation([[2, 0], [3, 1]])
  
b = Permutation([1, 3, 5, 4, 2, 0])
  
  
print ("Permutation a - runs form : ", a.runs())
print ("Permutation b - runs form : ", b.runs())

输出 ：

Permutation a – runs form : [[2, 3], [0, 1]]
Permutation b – runs form : [[1, 3, 5], [4], [2], [0]]

代码 #2：runs() 示例

# Python code explaining
# SymPy.Permutation.runs()
  
# importing SymPy libraries
from sympy.combinatorics.partitions import Partition
from sympy.combinatorics.permutations import Permutation
  
# Using from 
# sympy.combinatorics.permutations.Permutation.runs() method 
  
# creating Permutation
a = Permutation([[2, 4, 0], 
                 [3, 1, 2],
                 [1, 5, 6]])
  
  
print ("Permutation a - runs form : ", a.runs())

输出 ：

Permutation a – runs form : [[3], [2, 4, 5], [0, 6], [1]]