Prufer.to_tree():to_tree()是一个sympy Python库函数,它返回Prufer序列的树表示形式。
用法:
sympy.combinatorics.Prufer.prufer.to_tree()
返回:
Prufer序列的表示
代码1:to_tree()示例
# Python code explaining
# SymPy.Prufer.to_tree()
# importing SymPy libraries
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.prufer import Prufer
# Using from
# sympy.combinatorics.prufer.Prufer.to_tree()
# Creating Prufer
a = Prufer([1, 2, 3], [2, 4, 5], 4)
# to_tree value
print ("Prufer a to_tree : ", Prufer.to_tree([0, 2]))
输出:
Prufer a to_tree : [[0, 1], [0, 2], [2, 3]]
代码2:to_tree()示例
# Python code explaining
# SymPy.Prufer.to_tree()
# importing SymPy libraries
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.prufer import Prufer
# Using from
# sympy.combinatorics.prufer.Prufer.to_tree()
# Creating Prufer
b = Prufer([1, 2, 3, 2, 4, 5], [6, 7], [8], 4)
# to_tree value
print ("Prufer b to_tree : ", Prufer.to_tree([0, 2]))
输出:
Prufer b to_tree : [[0, 1], [0, 2], [2, 3]]
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