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();
	}

}

package codezam.util;

import java.io.File;
import java.io.FileReader;
import java.io.LineNumberReader;

public class InputFile {

	private File file;
	FileReader freader;
	LineNumberReader lnreader;
	
	public void setFile(String filename) {
		
		try {
			file = new File(filename);
			freader = new FileReader(file);
			lnreader = new LineNumberReader(freader);
			
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	
	public String readLine() {
		String line = null;
		
		try {
			line = lnreader.readLine();
			//System.out.println("Line:  " + lnreader.getLineNumber() + ": " + line);

			if (line==null) {
				close();
			}
			
		} catch (Exception e) {
			e.printStackTrace();
		}
		
		return line;
	}

	private void close() {
		try {
			freader.close();
			lnreader.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	
}
