Python 中的 SymPy | Prufer.next()

原文:https://www.geeksforgeeks.org/sympy-prufer-next-in-python/

Prufer.next() : next() 是一个 sympy Python 库函数，它返回的 Prufer 序列是当前序列的增量。

语法: 友好。组合者。prufer . prufer . next()

返回: 超出当前增量的普鲁弗序列

代码#1:下一个()示例

# Python code explaining
# SymPy.Prufer.next()

# importing SymPy libraries
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.prufer import Prufer

# Using from 
# sympy.combinatorics.prufer.Prufer.next()

# Creating Prufer
a = Prufer([1, 2, 3], [2, 4, 5])

# next value
print ("Prufer a next : ", a.next(1))

输出:

pruder a next:pruder([1，2，4])

代码#2:下一个()示例

# Python code explaining
# SymPy.Prufer.next()

# importing SymPy libraries
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.prufer import Prufer

# Using from 
# sympy.combinatorics.prufer.Prufer.next()

# Creating Prufer
b = Prufer([1, 2, 3, 2, 4, 5], [6, 7], [8])

# next value
print ("Prufer b next : ", b.next(1))

输出:

pruder b next:pruder([1，2，3，2，4，6])

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