var arr1=[-3,8,7,6,5,-4,3,2,1];  
var arr2=[];  
var min=arr1[0];  
var pos;  
max=arr1[0];  
for (i=0; i<arr1.length; i++)  
{  
        if (max<arr1[i]) max=arr1[i];  
}  
  
for (var i=0;i<arr1.length;i++)  
{  
        for (var j=0;j<arr1.length;j++)  
        {  
                if (arr1[j]!="x")  
                {  
                        if (min>arr1[j])   
                        {  
                                min=arr1[j];  
                                pos=j;  
                        }  
                }  
        }  
        arr2[i]=min;  
        arr1[pos]="x";  
        min=max;  
}  
console.log(arr2);