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SymPy | Prufer.unrank() in Python

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Prufer.unrank() : unrank() is a sympy Python library function that returns the unranked Prufer sequence.
Syntax : sympy.combinatorics.Prufer.prufer.unrank() Return : unranked Prufer sequence
Code #1 : unrank() Example
# Python code explaining
# SymPy.Prufer.unrank()
  
# importing SymPy libraries
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.prufer import Prufer
  
# Using from 
# sympy.combinatorics.prufer.Prufer.unrank()
  
# Creating Prufer
a = Prufer([1, 2, 3], [2, 4, 5])
  
# unrank value
# rank = 2
# n = 5
print ("Prufer a unrank : ", a.unrank(2, 5))

                    
Output :
Prufer a unrank : 125
Code #2 : unrank() Example
# Python code explaining
# SymPy.Prufer.unrank()
  
# importing SymPy libraries
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.prufer import Prufer
  
# Using from 
# sympy.combinatorics.prufer.Prufer.unrank()
  
# Creating Prufer
b = Prufer([1, 2, 3, 2, 4, 5], [6, 7], [8])
  
# unrank value
# rank = 2
# n = 5
print ("Prufer b unrank : ", b.unrank(2, 5))

                    
Output :
Prufer b unrank : Prufer([0, 0, 2])


Last Updated : 26 Aug, 2019
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