quicksort3: Low-level sorting: threeway quicksort

In bit: Classes and Methods for Fast Memory-Efficient Boolean Selections

Low-level sorting: threeway quicksort

Description

In one pass over the vector NAs are handled according to parameter na.last by range_sortna, then, if the vector is unsorted, threeway quicksort is invoked.

Usage

quicksort3(x, na.last = NA)

Arguments

x	an integer vector
na.last	NA removes NAs, FALSE puts NAs at the beginning, TRUE puts NAs at the end

Value

a sorted vector

Examples

countsort(c(2L,0L,1L,NA,2L))
countsort(c(2L,0L,1L,NA,2L), na.last=TRUE)
countsort(c(2L,0L,1L,NA,2L), na.last=FALSE)

bit documentation built on Sept. 20, 2024, 5:08 p.m.