Solution to: Problem A. Speaking in Tongues

gistfile1.aw

<?php
/**
 * Google Code Jam 2012 
 * 
 * @author Kien Pham - kien@sendgrid.com 
 */

$C = new CodeJam();
$C->run();

class CodeJam
{
  private $_filename = 'in.in';
  private $_data;
  private $_cases;
  private $_file_out_handle;

  public function algorithm1($data, $case)
  {
    //  'a' -> 'y', 'o' -> 'e', and 'z' -> 'q'.
    // q, z

    $string = 'ejp mysljylc kd kxveddknmc re jsicpdrysi rbcpc ypc rtcsra dkh wyfrepkym veddknkmkrkcd de kr kd eoya kw aej tysr re ujdr lkgc jv y e q z';
    $string = str_split($string);

    $answer = 'our language is impossible to understand there are twenty six factorial possibilities so it is okay if you want to just give up a o z q';
    $answer = str_split($answer);

    $maps = array();

    foreach ($string as $key => $val)
    {
      $maps[$val] = $answer[$key];
    }

    ksort($maps);
//print_r($maps);exit;


    $string = trim($data[0]);
    
    echo 'processing case # ' . $case . "\n";
    echo 'items is: ' . $string . "\n";
    echo 'result is: ';
    $result = null;

    $strings = str_split($string);

    foreach ($strings as $string)
    {
      $result .= $maps[$string]; // isset($maps[$string]) ? $maps[$string]:' ';
    }

    //echo $result;exit;
    return $result;
    

  }

  public function __construct()
  {
    $this->_filename = $_SERVER['argv'][1];
  }

  public function run()
  {
    // remove output file:
    $this->removeFile($this->_filename . '.out');    

    $data = $this->readFile();

    // call algorithm here:
    //$data = $this->algorithm1($data);

    // write to file:
    //$this->writeFile($data);

    // close output file:
    $this->closeFile();
  }
  
  public function readFile()
  {
    $file_handle = fopen($this->_filename, 'r');

    $case = 1;
    $data = array();
    do
    {
      if (!$this->_cases)
      {
        $this->_cases = fgets($file_handle);
      }
      else
      {
        $current_case = array(fgets($file_handle));

        $indexes = $this->algorithm1($current_case, $case);

        $this->writeFile($indexes, $case);
        $case++;
      }
    }
    while (!feof($file_handle) and $case <= $this->_cases);

    $content = file_get_contents($this->_filename);
    
    return $content;
  }

  public function writeFile($data, $case)
  {
    $out = "Case #$case: $data\n";
    echo $out;

    $this->_file_out_handle = fopen($this->_filename . '.out', 'a');
    fwrite($this->_file_out_handle, $out);
  }

  public function closeFile()
  {
    fclose($this->_file_out_handle);
  }

  public function removeFile($file)
  {
    if (file_exists($file))
    {
      unlink($file);
    }
  }

}