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void quicksort(int n[], int left,int right)//n¾ÍÊÇÐèÒªÅÅÐòµÄÊý×飬leftºÍrightÊÇÄãÐèÒªÅÅÐòµÄ×ó½çºÍÓѽ磬Èç¹ûÒªÅÅÐòÉÏÃæÄǸöÊý×飬ÄÇôleftºÍright·Ö±ðÊÇ0ºÍ9
{
  int dp;
  if (left     dp=partition(n,left,right);//Õâ¾ÍÊÇÏÂÃæÒª½²µ½µÄº¯Êý£¬°´ÕÕÉÏÃæËù˵µÄ£¬¾ÍÊǰÑËùÓÐСÓÚ53µÄÊý·Åµ½ËüµÄ×ó±ß£¬´óµÄ·ÅÔÚÓұߣ¬È»ºó·µ»Ø53ÔÚÕûÀí¹ýµÄÊý×éÖеÄλÖá£
    quicksort(n,left,dp-1);
    quicksort(n,dp+1,right);//ÕâÁ½¸ö¾ÍÊǵݹéµ÷Ó㬷ֱðÕûÀí53×ó±ßµÄÊý×éºÍÓұߵÄÊý×é
  }
}

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int partition(int n[],int left,int right)
{
  int lo,hi,pivot,t;
  pivot=n[left];
  lo=left-1;
  hi=right+1;
  while(lo+1!=hi)  {
    if(n[lo+1]<=pivot)
      lo++;
    else if(n[hi-1]>pivot)
      hi--;
    else {
      t=n[lo+1];
      n[++lo]=n[hi-1];
      n[--hi]=t;
    }
  }
  n[left]=n[lo];
  n[lo]=pivot;
  return lo;
}
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