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 fromsympy.combinatorics importPermutation, Cycle fromsympy.combinatorics.prufer importPrufer  # 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 fromsympy.combinatorics importPermutation, Cycle fromsympy.combinatorics.prufer importPrufer  # 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])

 
                                    







