js冒泡排序

var i;
var j;
var k="";
var g=0;
cars=news Array()
var num = Math.random()*700+200;
   num = parseInt(num,10);	//200-900的随机整数，包含200但不包含900
    cars[i]=num	
        }

function mk1()
{ 
  for (i=0;i<cars.length;i++)
  {
   for(j=0;j<cars.length-i;j++)
   {
    if(cars[j]>cars[j+1])
	{
	temp=cars[j+1];
	cars[j+1]=cars[j];
	cars[j]=temp;
	}
   }
  }

 for (i=0;i<cars.length;i++)
{
//k=k+cars[i]+"\n";/转化成文本
document.write(cars[i]  + "<br>");
x=x+cars[i];
}

//alert(g+""+"结果"+"\n");
document.write("相加和"+x + "<br>");

}