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class.towers.php
228
class.towers.php
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@ -30,27 +30,20 @@ class Tower{
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return json_encode($this->get_tower_array());
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}
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/*
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to rewrite with move object
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public function list_moves_availables(){
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$moves = array(
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array('from' => 0, 'to' => 1),
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array('from' => 0, 'to' => 2),
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array('from' => 1, 'to' => 0),
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array('from' => 1, 'to' => 2),
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array('from' => 2, 'to' => 0),
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array('from' => 2, 'to' => 1)
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);
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$movesAvailables = array();
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foreach($moves as $move){
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if ($this->check_if_move_is_available($move['from'],$move['to'])){
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$movesAvailables[] = $move;
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for( $i = 0; $i < 3; $i++ ){
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for( $j = 0; $j < 3; $j++ ){
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$move = Move::make($i,$j);
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if(($move !== false) && ($this->check_if_move_is_available($move))){
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$movesAvailables[] = $move;
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}
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}
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}
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return $movesAvailables;
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}
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*/
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private function get_tower_array(){
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return array(
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$this->tower0,
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@ -59,16 +52,19 @@ class Tower{
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);
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}
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private function check_if_move_is_available(Move $move){
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$fromTower = "tower".$move->from;
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$toTower = "tower".(string)$move->to;
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echo "kk$toTower\n".$move."|";
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print_r($this->{$toTower});
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//echo end($this->$toTower)."|". end($this->$fromTower);
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if(($move!==false) || (empty($this->$fromTower)) || (end($this->$toTower) < end($this->$fromTower))){
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if($move === false){
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return false;
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}
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return true;
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$fromTower = "tower".$move->from;
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$toTower = "tower".$move->to;
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if( (!empty($this->{$fromTower}))
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&&( (end($this->{$toTower}) > end($this->{$fromTower}))
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||(empty ($this->{$toTower}))
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)
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){
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return true;
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}
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return false;
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}
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public function add_move(Move $move){
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@ -96,93 +92,85 @@ class Move{
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private $value;
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public function __construst(){
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public function __construct(){
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$this->value = 0;
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}
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private function set_value($value){
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$this->value = $value;
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switch ($value){
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case Move::$from0to1:
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$this->from = 0;
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$this->to = 1;
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break;
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case Move::$from0to2:
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$this->from = 0;
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$this->to = 2;
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break;
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case Move::$from1to0:
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$this->from = 1;
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$this->to = 0;
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break;
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case Move::$from1to2:
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$this->from = 1;
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$this->to = 2;
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break;
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case Move::$from2to0:
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$this->from = 2;
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$this->to = 0;
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break;
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case Move::$from2to1:
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$this->from = 2;
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$this->to = 1;
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break;
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default:
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return false;
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break;
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}
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private function set_value($value){
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$this->value = $value;
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switch ($value){
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case Move::$from0to1:
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$this->from = 0;
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$this->to = 1;
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break;
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case Move::$from0to2:
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$this->from = 0;
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$this->to = 2;
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break;
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case Move::$from1to0:
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$this->from = 1;
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$this->to = 0;
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break;
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case Move::$from1to2:
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$this->from = 1;
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$this->to = 2;
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break;
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case Move::$from2to0:
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$this->from = 2;
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$this->to = 0;
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break;
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case Move::$from2to1:
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$this->from = 2;
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$this->to = 1;
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break;
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default:
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return false;
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break;
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}
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public function __toString(){
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switch($this->value){
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case Move::$from0to1:
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return "from col 0 to 1";
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break;
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case Move::$from0to2:
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return "from col 0 to 2";
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break;
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case Move::$from1to0:
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return "from col 1 to 0";
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break;
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case Move::$from1to2:
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return "from col 1 to 2";
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break;
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case Move::$from2to0:
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return "from col 2 to 0";
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break;
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case Move::$from2to1:
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return "from col 2 to 1";
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break;
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default:
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return false;
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break;
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}
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}
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public function __toString(){
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switch($this->value){
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case Move::$from0to1:
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return "from col 0 to 1";
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break;
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case Move::$from0to2:
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return "from col 0 to 2";
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break;
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case Move::$from1to0:
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return "from col 1 to 0";
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break;
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case Move::$from1to2:
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return "from col 1 to 2";
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break;
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case Move::$from2to0:
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return "from col 2 to 0";
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break;
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case Move::$from2to1:
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return "from col 2 to 1";
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break;
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default:
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return false;
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break;
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}
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public static function make($str){
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$move = new Move();
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switch((string)$str){
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case "0 to 1":
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$move->set_value(Move::$from0to1);
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break;
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case "0 to 2":
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$move->set_value(Move::$from0to2);
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break;
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case "1 to 0":
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$move->set_value(Move::$from1to0);
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break;
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case "1 to 2":
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$move->set_value(Move::$from1to2);
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break;
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case "2 to 0":
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$move->set_value(Move::$from2to0);
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break;
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case "2 to 1":
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$move->set_value(Move::$from2to1);
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break;
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default:
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return false;
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break;
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}
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return $move;
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}
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public static function make($from,$to){
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$move = new Move();
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if(($from == 0) && ($to == 1))
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$move->set_value(Move::$from0to1);
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elseif(($from == 0) && ($to == 2))
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$move->set_value(Move::$from0to2);
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elseif(($from == 1) && ($to == 0))
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$move->set_value(Move::$from1to0);
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elseif(($from == 1) && ($to == 2))
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$move->set_value(Move::$from1to2);
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elseif(($from == 2) && ($to == 0))
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$move->set_value(Move::$from2to1);
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elseif(($from == 2) && ($to ==1))
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$move->set_value(Move::$from2to1);
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else
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return false;
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return $move;
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}
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}
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class Steps{
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@ -194,15 +182,29 @@ class Steps{
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$this->steps = array();
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}
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public function add_step(Tower $tower){
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//3 tours contenant au max n valeurs de 0à n-1*
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//a way to convert the tower to a simple integer (long)
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$arr = $tower->get_tower_array();
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$tower0 = int_val(base_convert(implode("",$arr[0]),$tower->discsCount,10));
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$tower1 = int_val(base_convert(implode("",$arr[1]),$tower->discsCount,10));
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$tower2 = int_val(base_convert(implode("",$arr[2]),$tower->discsCount,10));
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private function convert_column_to_int($column,$base){
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$exp = 0;
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$total = 0;
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foreach($column as $elem){
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$total += $elem * pow( $base , $exp );
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$exp++;
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}
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return $total;
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}
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private function convert_tower_to_int(Tower $tower){
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$arrTower = $tower->get_tower_array();
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return
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$this::convert_column_to_int($arrTower[0]) +
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$this::convert_column_to_int($arrTower[1]) * pow(10,$tower->discsCount) +
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$this::convert_column_to_int($arrTower[2]) * pow(10,2 * $tower->discsCount);
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}
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public function add_step(Tower $tower){
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$towerValue = $this::convert_tower_to_int($tower);
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$towerValue = $tower0 * pow( 10, 2 * $tower->count) + $tower1 * pow( 10, $tower->count) + $tower2;
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if(in_array($towerValue,$this->steps)){
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return false;
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}else{
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25
resolver.php
25
resolver.php
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@ -6,19 +6,31 @@ include("class.towers.php");
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$tower = new Tower($discCount);
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$steps = new Steps();
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/*
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echo "1".$tower."\n";
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$move = new Move();
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$move->make("0 to 1");
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$move = Move::make(0,2);
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$tower = $tower->add_move($move);
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echo "2".$tower."\n";
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/*
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print_r($tower->list_moves_availables());
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*/
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resolveHanoi($tower);
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function resolveHanoi($tower){
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//out of recursif if
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function resolveHanoi(Tower $tower, Steps $steps){
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$steps->add_step($tower);
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$availablesMoves = $tower->list_moves_availables();
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//take only the moves who will generate a new unknowed Tower
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$uniquesAvailableMoves = array();
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foreach($availablesMoves as $move){
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$newTower = $tower-> add_move($move);
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//to do check if unique ************************************************
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}
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//don't take moves that will generate an ever used tower configuration
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$useful_moves = array();
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foreach($availablesMoves as $move){
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@ -27,4 +39,3 @@ function resolveHanoi($tower){
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}
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*/
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