SymPy | Python中的 Partition.RGS_unrank()

Partition.RGS_unrank(rank, n) ：RGS_unrank()是一个 sympy Python库函数，它为大小为 n 的超集提供未排序的受限增长字符串（其中 a[i] 是元素 i 出现的块的字符串） 。

限制增长的字符串——字符串中的每个字符, a _i导致对应元素所属的块 (B _i )。

Syntax : sympy.combinatorics.partitions.Partition.RGS_unrank()

Return : nranked restricted growth for a superset of size n.

代码 #1：RGS_unrank() 示例

# Python code explaining
# SymPy.RGS_unrank()
  
# importing SymPy libraries
from sympy.combinatorics.partitions import Partition
from sympy.combinatorics.partitions import RGS_unrank
  
# Using from sympy.combinatorics.partitions.Partition.RGS_unrank() method 
rank = 10
n = 5
p = RGS_unrank(rank, n)
  
print ("unranked restricted growth string for super size 10 : \n", p)

输出 ：

unranked restricted growth string for super size 10 :
[0, 0, 1, 1, 2]

代码 #2：RGS_unrank() 示例

# Python code explaining
# SymPy.RGS_unrank()
  
# importing SymPy libraries
from sympy.combinatorics.partitions import Partition
from sympy.combinatorics.partitions import RGS_unrank
  
# Using from sympy.combinatorics.partitions.Partition.RGS_unrank() method 
p = RGS_unrank(100, 10)
  
print ("unranked restricted growth string for super size 10 : \n", p)

输出 ：

unranked restricted growth string for super size 10 :
[0, 0, 0, 0, 0, 1, 1, 1, 0, 1]