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();
	}

}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package recyclednumbers;

import java.io.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 *
 * @author WC
 */
public class CodeJamFileManager {
	private final static String problemIntro = "Problem reading file: ";
	private final static String location = "C:\\CodeJamTests\\";
	
	public static String getStringOfFile(String filename) {
		String filepath = location + filename;
		byte[] buffer = new byte[(int) new File(filepath).length()];
    BufferedInputStream stream = null;
    try {
        stream = new BufferedInputStream(new FileInputStream(filepath));
        stream.read(buffer);
    }
		catch (Exception ex) { 
			return problemIntro + ex.getMessage();
		}
		finally {
			if (stream != null) {
				try { 
					stream.close(); 
				}
				catch (IOException ex) {
					return problemIntro + ex.getMessage(); 
				}
			}
    }
    return new String(buffer);
	}
	
	public static int getIntFromFirstLineOfFile(String filename, String separator) {
		String[] lines = getTextLinesOfFile(filename, separator);
		int i = 1;
		return extractInt(lines[0]);
	}
	
	public static String[] getTextLinesOfFile(String filename, String separator) {
		String fileStr = getStringOfFile(filename);
		return fileStr.split(separator);
	}
	
	public static void saveOutputFile(String output, String filename, String separator) {
		String filepath = location + filename;
		try {
			File outFile = new File(filepath);
			FileWriter writer = new FileWriter(outFile);
			BufferedWriter bWriter = new BufferedWriter(writer);
			bWriter.write(output);
			bWriter.close();
		}
		catch (Exception ex) {
			System.out.println("Failed to save file with error: " + ex.getMessage());
		}
	}
	
		
	private static int extractInt(String line) {
		Matcher intMatcher = Pattern.compile("[0-9]*").matcher(line);
		int i = 0;
		if (intMatcher.find()) {
			String numStr = intMatcher.group(0);
			i = Integer.parseInt(numStr);
		}
		return i;
	}
}
