source: other-projects/is-sheet-music-encore/trunk/java-gen-corpus/TabRndListGen.java@ 33031

//NAME:Caleb Bird
//ID: 1289680
//??References??

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.*;

public class TabRndListGen {
    public static void main(String[] args) {
    try{
        if (args.length != 3){
        System.out.println("Usage: TabRndListGen <inputFilename> <outputCount> <outputFilename>");
        }
        else{
        String inputFilename = args[0];
        int outputCount  = Integer.parseInt(args[1]);
        String outputFilename = args[2];
        
        BufferedReader buf = new BufferedReader(new FileReader(inputFilename));
        FileWriter fw = new FileWriter(outputFilename);
        //FileWriter fw = new FileWriter("hathiRndIDList.txt");
        //BufferedReader buf = new BufferedReader(new FileReader("hathiDocIDList.txt"));

        ArrayList<String> list = new ArrayList<String>();
        ArrayList<String> subList;
        String line = null;
        String[] item;

        //Add items to Array
        while ((line = buf.readLine()) != null) {
            //Split line by tab
            item = line.split("\t", -1);
            //Add first element (ID)
            list.add(item[0]);      
        }
        //randomize list
        Collections.shuffle(list);

        //Take <outputCount>
        subList = new ArrayList<String>(list.subList(0,outputCount));

        //Write these to new file
        for(int i =0; i < subList.size(); i++){
            fw.write(subList.get(i) + '\n');
        }
            
        buf.close();
        fw.close();
        }
    }catch(Exception e){
        e.printStackTrace();
    }
    }
}
// Returns 42474

//REFERNECES
//https://www.javatpoint.com/java-filewriter-class
//https://docs.oracle.com/javase/8/docs/api/index.html?java/io/FileWriter.html
//https://www.geeksforgeeks.org/randomly-select-items-from-a-list-in-java/
//https://codereview.stackexchange.com/questions/146551/picking-10-distinct-words-randomly-from-list-of-unique-words

//USE RUN-LIST.txt (modify file it reads using $1 (terminal entry variable (filename))