package fixjava;

public class StringUtils {

	/** Repeat the given string the requested number of times. */
	public static String repeat(String str, int numTimes) {
		StringBuilder buf = new StringBuilder(Math.max(0, str.length() * numTimes));
		for (int i = 0; i < numTimes; i++)
			buf.append(str);
		return buf.toString();
	}

	/**
	 * Pad the left hand side of a field with the given character. Always adds at least one pad character. If the length of str is
	 * greater than numPlaces-1, then the output string will be longer than numPlaces.
	 */
	public static String padLeft(String str, char padChar, int numPlaces) {
		int bufSize = Math.max(numPlaces, str.length() + 1);
		StringBuilder buf = new StringBuilder(Math.max(numPlaces, str.length() + 1));
		buf.append(padChar);
		for (int i = 1, mi = bufSize - str.length(); i < mi; i++)
			buf.append(padChar);
		buf.append(str);
		return buf.toString();
	}

	/**
	 * Pad the right hand side of a field with the given character. Always adds at least one pad character. If the length of str is
	 * greater than numPlaces-1, then the output string will be longer than numPlaces.
	 */
	public static String padRight(String str, char padChar, int numPlaces) {
		int bufSize = Math.max(numPlaces, str.length() + 1);
		StringBuilder buf = new StringBuilder(Math.max(numPlaces, str.length() + 1));
		buf.append(str);
		buf.append(padChar);
		while (buf.length() < bufSize)
			buf.append(padChar);
		return buf.toString();
	}

	/** Intern all strings in an array, skipping null elements. */
	public static String[] intern(String[] arr) {
		for (int i = 0; i < arr.length; i++)
			arr[i] = arr[i].intern();
		return arr;
	}

	/** Intern a string, ignoring null */
	public static String intern(String str) {
		return str == null ? null : str.intern();
	}

}

import java.io.*;
import java.nio.charset.Charset;
import java.nio.file.Path;
import java.util.ArrayList;

public class ReadWriter
{
    public ArrayList<String> readFile(String path){
        File file = new File(path);
        ArrayList<String> strings = new ArrayList<String>();
        BufferedReader reader = null;
        try{
            reader = new BufferedReader(new FileReader(file));
            String text = null;
            while((text=reader.readLine())!=null){
                strings.add(text);
            }
            return strings;
        }
        catch(Exception e){
            e.printStackTrace();
        }
        finally{
            try{
                if(reader!=null){
                    reader.close();
                }
            }
            catch(Exception e){
                e.printStackTrace();
            }
        }
        return null;
    }
    public void writeFile(ArrayList<String> list, String path){
        BufferedWriter out=null;
        try{
            FileWriter fstream = new FileWriter(path);
            out = new BufferedWriter(fstream);
            for(String s : list){
                out.write(s);
                out.write("\r\n");
            }
        }
        catch(Exception e){
            e.printStackTrace();
        }
        finally{
            try{
                if(out!=null){
                    out.close();
                }
            }
            catch(Exception e){
                e.printStackTrace();
            }
        }
    }
}
