Python中的SymPy Partition.RGS_enum()

Partition.RGS_enum() 。RGS_enum()是一个sympy Python库函数，它计算了一个大小为n的超集可能出现的限制性增长字符串（字符串中a[i]是元素i出现的区块）的总数。

限制性增长字符串–字符串中的每个字符，a i导致相应元素所属的块（B i）。

语法 : sympy.combinatorics.partitions.Partition.RGS_enum()

返回：限制性增长字符串的总数，可能是大小为n的超集。

代码 #1 : RGS_enum() 示例

# Python code explaining
# SymPy.RGS_enum()
  
# importing SymPy libraries
from sympy.combinatorics.partitions import Partition
from sympy.combinatorics.partitions import RGS_enum
  
# Using from sympy.combinatorics.partitions.Partition.RGS_enum() method 
p = RGS_enum(4)
  
q = RGS_enum(9)
  
print ("no. of strings possible for size  4: ", p)
print ("no. of strings possible for size  9: ", q)

输出 :

no. of strings possible for size 4: 15
no. of strings possible for size 9: 203

代码 #2 :RGS_enum()示例

# Python code explaining
# SymPy.RGS_enum()
  
# importing SymPy libraries
from sympy.combinatorics.partitions import Partition
from sympy.combinatorics.partitions import RGS_enum
  
# Using from sympy.combinatorics.partitions.Partition.RGS_enum() method 
p = RGS_enum(20)
  
q = RGS_enum(-1)
  
print ("no. of strings possible for size  20 ", p)
print ("no. of strings possible for size  -1: ", q)

输出 :

no. of strings possible for size 20 51724158235372
no. of strings possible for size -1: 0