void quicksort(int arry[],int left,int right)
{
int i=left,j=right,key=arry[left];
while(i<j)
{
while(i<j&&arry[j]>=key) j--;
arry[i]=arry[j];
while(i<j&&arry[i]<=key) i++;
arry[j]=arry[i];
}
arry[i]=key;
if(i-left) quicksort(arry,left,i-1);
if(right-i) quicksort(arry,i+1,right);
}