Class SortCSV

java.lang.Object

SortCSV

public class SortCSV
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
SortCSV()

Method Summary

Modifier and Type	Method and Description
static void	main(java.lang.String[] args) Given a standard input CSV input where each row has the same number of comma-separated elements of the same String/double/int type sequence, and optionally given a zero-based column number, print the same CSV lines to standard output sorted according to the zero-based column number.
static void	sort(java.util.ArrayList<java.lang.Object[]> records, int sortIndex) Given an ArrayList of Object[] records, each being an array of String/Double/Integer objects parsed from an input CSV line, sort the ArrayList's Object[] records according to the given 0-based sort column index.

Methods inherited from class java.lang.Object

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

Constructor Detail

SortCSV

public SortCSV()

Method Detail

main

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

Given a standard input CSV input where each row has the same number of comma-separated elements of the same String/double/int type sequence, and optionally given a zero-based column number, print the same CSV lines to standard output sorted according to the zero-based column number. If no column is specified, the CSV lines are according to column 0. Each String will begin and end with double-quotes. Each double and int can be parsed with Double.parseDouble(String) and Integer.parseInt(String), respectively. You may assume that there will be no spaces before or after commas; the only spaces that can occur are within a String's double-quotes.

Parameters:

args - args[0] should be a zero-based column number designated for sorting the CSV lines

sort

public static void sort(java.util.ArrayList<java.lang.Object[]> records,
                        int sortIndex)

Given an ArrayList of Object[] records, each being an array of String/Double/Integer objects parsed from an input CSV line, sort the ArrayList's Object[] records according to the given 0-based sort column index. For example, if sortIndex is 2, then this sorts the records within the ArrayList according to the third element of each record array. For any given sortIndex (i.e. column), you may assume that all elements of that index have the same String/Double/Integer type for all records (i.e. rows).

Parameters:

records - an ArrayList of Object[] records, each being an array of String/Double/Integer objects

sortIndex - the given 0-based sort column index