很好| Partition.prev_lex()用 Python
表示
原文:https://www.geesforgeks.org/sympy-partition-prev_lex-in-python/
partition.prev_lex():prev_lex()是一个 sympy Python 库函数,返回上一个整数分区,n 按 lexographical 顺序。如果分区是[1,…,1],这种排序将环绕[n]。
语法:sympy.combinations.partitions.partition.prev_lex()
返回:前一个整数分区,n 按字母顺序
代码#1 : prev_lex()示例
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# Python code explaining
# SymPy.prev_lex()
# importing SymPy libraries
from sympy.combinatorics.partitions import Partition
from sympy.combinatorics.partitions import IntegerPartition
# Using from sympy.combinatorics.partitions.Partition.prev_lex() method
p = IntegerPartition([312, 121, 14, 5])
print('p : ', p)
print('\nPrevious Integrer : ', p.prev_lex())
输出:
p : [312,121,14,5]
上一次积分 : [312, 121, 14, 4, 1]
代码#2 : prev_lex()示例
]
# Python code explaining
# SymPy.prev_lex()
# importing SymPy libraries
from sympy.combinatorics.partitions import Partition
from sympy.combinatorics.partitions import IntegerPartition
# Using from sympy.combinatorics.partitions.Partition.prev_lex() method
p = IntegerPartition([1, 312, 121, 14,
34, 56, 32])
print('p : ', p)
print('\nPrevious Integrer : ', p.prev_lex())
输出:
p : [312,121,56,34,32,14,1]
上一次积分 : [312, 121, 56, 34, 32, 13, 2]