for (var i = 0; i < 3; i++) {
 document.writeln(i); //DOM操作 
 var now = new Date().getTime(); 
 while(new Date().getTime() - now < 3000){} 
}

(function(){
  var theArr = arr.slice();//当前数组状态的备份
  setTimeout(function(){
    bubbleSortDom(theArr);//排序的DOM操作。
  },500*timeCount);
  timeCount++;//定时器的顺序。
})();

this.pushHis(arr.slice(),i-1,j,k,temp);

function quickSort(arr){
var len = arr.length,leftArr=[],rightArr=[],tag;
if(len<2){
return arr;
}
tag = arr[0];
for(i=1;i<len;i++){
if(arr[i]<=tag){
leftArr.push(arr[i])
}else{
rightArr.push(arr[i]);
}
}
return quickSort(leftArr).concat(tag,quickSort(rightArr));
}

function quickSort(arr,a,b,qArr){

var len = arr.length,leftArr=[],rightArr=[],tag,i,k,len_l,len_r,lb,ra,temp;
if(a == undefined && b == undefined){
a = 0; b= arr.length-1;//初始化起始位置。
}
if(qArr == undefined){
qArr = arr.slice();
}

if((len == 2 && arr[0] == arr[1])||len<2){
return arr;
}

tag = qArr[a];
for (i = 1; i < len;) {
if(qArr[a+i]<=tag){
leftArr.push(qArr[a+i]);
qArr[a+i-1] = qArr[a+i];
qArr[a+i] = tag;
k = a+i;
i++;
}else{
if(leftArr.length+rightArr.length == len-1){
break;
}
temp = qArr[a+i];
qArr[a+i] = qArr[b-rightArr.length];
qArr[b-rightArr.length] = temp;
rightArr.push(temp);
k = a+i-1;
}
this.pushHis(qArr.slice(),a,b,k);
}

len_l = leftArr.length;
len_r = rightArr.length;
if(len_l== 0){
lb = a;
}else{
lb = a+len_l -1;
this.sort(leftArr,a,lb,qArr);
}

if(len_r == 0){
ra = b;
}else{
ra = b + 1 - len_r;
this.sort(rightArr,ra,b,qArr)
}
return qArr
}

function quickSort2(arr,a,b,qArr){ 
  var len = arr.length,leftArr=[],rightArr=[],tag,i,j,k,temp,len_l,len_r,lb,ra; 
  if(a == undefined && b == undefined){ 
    a = 0; b= arr.length-1;//初始化起始位置。 
  } 
  if(qArr == undefined){ 
    qArr = arr.slice(); 
  } 
  if(len<2){ 
    return arr; 
  } 
  if(len == 2 && arr[0] == arr[1]){ 
    return arr; 
  } 
  tag = qArr[a]; 
  for (i = 1,k = 0; i < len;) { 
    if(qArr[a+i]>=tag){ 
      rightArr.push(qArr[a+i]); 
      i++; 
    }else{ 
      temp = qArr[a+i]; 
      for(j = a+i;j>a+k;j--){ 
        qArr[j] = qArr[j-1]; 
        // this.pushHis(qArr.slice(),a,b,a+k); 
      } 
      qArr[a+k] = temp; 
      leftArr.push(temp); 
      k++; 
      i++; 
    } 
    this.pushHis(qArr.slice(),a,b,a+k,i-1); 
  } 
  len_l = leftArr.length; 
  len_r = rightArr.length; 
  if(len_l== 0){ 
    lb = a; 
  }else{ 
    lb = a+len_l -1; 
    this.sort(leftArr,a,lb,qArr); 
  } 
  if(len_r == 0){ 
    ra = b; 
  }else{ 
    ra = b + 1 - len_r; 
    this.sort(rightArr,ra,b,qArr) 
  } 
  return qArr; 
}