SymPy | Subset.next_binary() in Python

SymPy | Subset.prev_gray() in Python

Last Updated : 26 Aug, 2019

Subset.prev_gray() : prev_gray() is a sympy Python library function that returns the previous Gray code ordered subset.

Syntax : sympy.combinatorics.subset.Subset.prev_gray() Return : the previous Gray code ordered subset.

Code #1 : prev_gray() Example

Python3 1=1

# Python code explaining
# SymPy.Subset.prev_gray()

# importing SymPy libraries
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.subsets import Subset

# Using from 
# sympy.combinatorics.subset.Subsets.prev_gray()

# Creating Subset
a = Subset(['c', 'd'], ['geek', 'for', 'c', 'd'])

# prev_gray value
print ("Subset a prev_gray : ", a.prev_gray().subset)

Output :

Subset a prev_gray : ['d']

Code #2 : prev_gray() Example

Python3 1=1

# Python code explaining
# SymPy.Subset.prev_gray()

# importing SymPy libraries
from sympy.combinatorics import Permutation, Cycle
from sympy.combinatorics.subsets import Subset

# Using from 
# sympy.combinatorics.subset.Subsets.prev_gray()

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

# prev_gray value
print ("Subset a prev_gray : ", a.prev_gray().subset)

Output :

Subset a prev_gray : [2, 3, 4, 5]

SymPy | Subset.next_binary() in Python

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