Created
February 19, 2016 00:18
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Torres de Hanoi</title> | |
| <meta charset="utf-8"> | |
| <style> | |
| body,pre{ | |
| font-family: monospace; | |
| font-size: 15px; | |
| line-height: 1em; | |
| } | |
| pre{ | |
| font-weight: bold; | |
| margin: 0; | |
| } | |
| <?php if(!isset($_GET["mostrar"])){?> | |
| .solucion{ | |
| display: none; | |
| } | |
| <?php }?> | |
| #paso_0{ | |
| display: block; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <?php | |
| if(isset($_GET["n"])){ | |
| $N=$_GET["n"]; | |
| }else{ | |
| $N=3; | |
| } | |
| define("CHARMAX",2*$N+3); | |
| define("DISC_CHAR","#"); | |
| $paso=0; | |
| $postes=array( | |
| 1=>array(), | |
| 2=>array(), | |
| 3=>array() | |
| ); | |
| $colores=array( | |
| "red","blue","green","magenta","purple","cyan","#006699", | |
| "orange" | |
| ); | |
| for($i=1;$i<=$N;$i++){ | |
| $postes[1][]=$N-$i; | |
| } | |
| function hanoi($n,$desde,$hasta,$aux){ | |
| if($n>0){ | |
| hanoi($n-1,$desde,$aux,$hasta); | |
| mover($desde,$hasta); | |
| mostrar(); | |
| hanoi($n-1,$aux,$hasta,$desde); | |
| } | |
| } | |
| function mover($desde,$hasta){ | |
| global $postes; | |
| $elemento=array_pop($postes[$desde]); | |
| $postes[$hasta][]=$elemento; | |
| } | |
| function mostrarDisco($n){ | |
| global $colores; | |
| $espacios=(CHARMAX-(2*$n+1))/2; | |
| $color=$colores[$n%count($colores)]; | |
| $str ="<span style='color: ".$color."'>".str_repeat(" ",$espacios); | |
| $str.=str_repeat(DISC_CHAR,$n*2+1); | |
| $str.=str_repeat(" ",$espacios)."</span>"; | |
| return $str; | |
| } | |
| function mostrarPoste($poste){ | |
| global $postes; | |
| global $N; | |
| $espacios=(CHARMAX-1)/2; | |
| $columna=str_repeat(" ",$espacios); | |
| $columna.="|".str_repeat(" ",$espacios); | |
| $str=$columna."\n"; | |
| $n_discos=count($postes[$poste]); | |
| if($n_discos){ | |
| if($n_discos<$N){ | |
| $n_aux=$N-$n_discos; | |
| while($n_aux--!=0){ | |
| $str.=$columna."\n"; | |
| } | |
| } | |
| for($i=$n_discos-1;$i>=0;$i--){ | |
| $str.=mostrarDisco($postes[$poste][$i])."\n"; | |
| } | |
| }else{ | |
| for($i=0;$i<$N;$i++){ | |
| $str.=$columna."\n"; | |
| } | |
| } | |
| return $str; | |
| } | |
| function mostrar(){ | |
| global $paso; | |
| $str="<div class='solucion' id='paso_".$paso."'><a name='paso_".$paso."'>".$paso++."</a>"; | |
| $str.="<table border='0' cellpadding='0' cellspacing='0'>"; | |
| $str.="<tr>"; | |
| for($i=1;$i<=3;$i++){ | |
| $str.="<td><pre>"; | |
| $str.=mostrarPoste($i); | |
| $str.="</pre></td>"; | |
| } | |
| $str.="</tr>"; | |
| $str.="<tr><td colspan='3'><pre>".str_repeat("-",CHARMAX*3)."</pre></td></tr>"; | |
| $str.="</table></div>"; | |
| echo $str; | |
| }?> | |
| <form method="get" action="hanoi.php"> | |
| Nº de discos: <input type="text" name="n" value="<?php echo $N?>" onFocus="pausa=true"> | |
| <input type="checkbox" value="1" id="mostrar" name="mostrar" <?php if(isset($_GET["mostrar"]) && $_GET["mostrar"]){echo "checked";}?>> | |
| <label for="mostrar">Mostrar TODOS los pasos</label> | |
| <input type="submit" value="Aceptar"> | |
| </form> | |
| <?php | |
| if(isset($_GET["n"])){ | |
| mostrar(); | |
| hanoi($N,1,3,2); | |
| } | |
| ?> | |
| <?php if(!isset($_GET["mostrar"])){?> | |
| <a href="javascript:void(0)" onClick="anterior()" id="anterior">Anterior</a> | |
| <a href="javascript:void(0)" onClick="pausaf()" id="pausa_link"><span id="pausa_span">Pausa</span><span id="play_span" style="display: none">Continuar</span></a> | |
| <a href="javascript:void(0)" id="reiniciar_link" style="display: none" onClick="reiniciar()">Reiniciar</a> | |
| <a href="javascript:void(0)" onClick="siguiente()" id="siguiente">Siguiente</a> | |
| <?php }?> | |
| <script> | |
| var paso=0; | |
| var pausa=false; | |
| <?php if(!isset($_GET["mostrar"])){?> | |
| setInterval(function(){ | |
| if(paso<<?php echo pow(2,$N)-1?> && !pausa){ | |
| siguiente(); | |
| }else{ | |
| pausa=true; | |
| } | |
| if(paso==<?php echo pow(2,$N)-1?>){ | |
| document.getElementById("pausa_link").style.display="none"; | |
| document.getElementById("reiniciar_link").style.display="inline"; | |
| } | |
| },500); | |
| <?php }?> | |
| function reiniciar(){ | |
| document.getElementById("paso_"+paso).style.display="none"; | |
| paso=0; | |
| document.getElementById("paso_"+paso).style.display="block"; | |
| document.getElementById("pausa_link").style.display="inline"; | |
| document.getElementById("reiniciar_link").style.display="none"; | |
| document.getElementById("pausa_span").style.display="none"; | |
| document.getElementById("play_span").style.display="inline"; | |
| } | |
| function pausaf(){ | |
| pausa=!pausa; | |
| if(pausa){ | |
| document.getElementById("pausa_span").style.display="none"; | |
| document.getElementById("play_span").style.display="inline"; | |
| }else{ | |
| document.getElementById("pausa_span").style.display="inline"; | |
| document.getElementById("play_span").style.display="none"; | |
| } | |
| } | |
| function siguiente(){ | |
| if (paso<<?php echo pow(2,$N)-1?>){ | |
| document.getElementById("paso_"+paso).style.display="none"; | |
| paso++; | |
| document.getElementById("paso_"+paso).style.display="block"; | |
| } | |
| } | |
| function anterior(){ | |
| if(paso>0){ | |
| document.getElementById("paso_"+paso).style.display="none"; | |
| paso--; | |
| document.getElementById("paso_"+paso).style.display="block"; | |
| } | |
| } | |
| </script> | |
| </body> | |
| </html> |
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