javascript出力図の簡単なパス

<script>

//    

function vnode()

{

    this.visited=0;

    this.vertex=0;

    this.arcs=new Array();

}

function G()

{

    this.adjlist=new Array();

}

function creategraph()

{

    var a=[[2,3,6],[1,5,4],[4,6,1],[2,3,5],[4,2,6],[3,5,1]];

    var g=new G();

    for (i=0;i<6;i++)

    {

        g.adjlist[i]=new vnode();

        g.adjlist[i].vertex=i+1;

        g.adjlist[i].arcs=a[i];

    }

    return g;

}

//  Array            

var a=new Array();

a.push([1]);

var g=creategraph();

while(a.length)

{
    var temp=g.adjlist[a[0][a[0].length-1]-1].arcs;

    for(i=0;i<temp.length;i++)

    {

        if(temp[i]==6){alert(a[0].concat([6]));continue;}

        for(j=0;j<a[0].length;j++)

        {

            if(temp[i]==a[0][j])break;

            if(j==a[0].length-1)a.push(a[0].concat(temp[i]));

        }

    }

    a.shift();

}

</script>