partitions {arrangements} | R Documentation |
This function partitions an non-negative interger n
into k
parts or parts of any sizes.
The results are in lexicographical or reversed lexicographical order.
partitions(n, k = NULL, distinct = FALSE, descending = FALSE, layout = NULL, nitem = -1L, skip = NULL, index = NULL, nsample = NULL, drop = NULL)
n |
an non-negative integer to be partitioned |
k |
number of parts |
distinct |
an logical to restrict distinct values |
descending |
an logical to use reversed lexicographical order |
layout |
if "row", "column" or "list" is specified, the returned value would be a "row-major" matrix, a "column-major" matrix or a list respectively |
nitem |
number of partitions required, usually used with |
skip |
the number of partitions skipped |
index |
a vector of indices of the desired partitions |
nsample |
sampling random partitions |
drop |
vectorize a matrix or unlist a list |
ipartitions for iterating partitions and npartitions to calculate number of partitions
# all partitions of 6 partitions(6) # reversed lexicographical order partitions(6, descending = TRUE) # fixed number of parts partitions(10, 5) # reversed lexicographical order partitions(10, 5, descending = TRUE) # column major partitions(6, layout = "column") partitions(6, 3, layout = "column") # list output partitions(6, layout = "list") partitions(6, 3, layout = "list") # zero sized partitions dim(partitions(0)) dim(partitions(5, 0)) dim(partitions(5, 6)) dim(partitions(0, 0)) dim(partitions(0, 1))