edu.princeton.cs.algs4

Class AmericanFlagX

java.lang.Object

edu.princeton.cs.algs4.AmericanFlagX

public class AmericanFlagX
extends java.lang.Object

The AmericanFlagX class provides static methods for sorting an array of extended ASCII strings or integers in-place using American Flag sort. This implementation is non-recursive and uses only one auxiliary array.

For additional documentation, see Section 5.1 of Algorithms, 4th Edition by Robert Sedgewick and Kevin Wayne and Engineering Radix Sort by McIlroy and Bostic. For a version that uses two auxilary arrays, see AmericanFlag.

Method Summary

Modifier and Type	Method and Description
static void	main(java.lang.String[] args) Reads in a sequence of extended ASCII strings or non-negative ints from standard input; American flag sorts them; and prints them to standard output in ascending order.
static void	sort(java.lang.String[] a) Rearranges the array of extended ASCII strings in ascending order.
static void	sort(java.lang.String[] a, int lo, int hi)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

sort

public static void sort(java.lang.String[] a)

Rearranges the array of extended ASCII strings in ascending order. This is an unstable in-place sorting algorithm.

Parameters:

a - the array to be sorted

sort

public static void sort(java.lang.String[] a,
                        int lo,
                        int hi)

main

public static void main(java.lang.String[] args)

Reads in a sequence of extended ASCII strings or non-negative ints from standard input; American flag sorts them; and prints them to standard output in ascending order.

Parameters:

args - the command-line arguments