# include <stdio.h>
#define N 9
void fun(int  a[], int  n)
{  int  i,j, max, min, px, pn, t;
   for (i=0; i<n-1; i+=2)
   {
/**********found**********/
      max = min = a[i];
      px = pn = i;
      for (j=i+1; j<n; j++) {
/**********found**********/
         if (max<a[j])
         {   max = a[j]; px = j;  }
/**********found**********/
         if (min>a[j])
         {   min = a[j]; pn = j;  }
      }
      if (pn != i)
      {  t = a[i]; a[i] = min; a[pn] = t;
         if (px == i) px =pn;
      }
      if (px != i+1)
      {  t = a[i+1]; a[i+1] = max; a[px] = t; }
   }
}
void main()
{  int  b[N]={9,1,4,2,3,6,5,8,7}, i;
   printf("\nThe original data :\n");
   for (i=0; i<N; i++)  printf("%4d ", b[i]);
   printf("\n");
   fun(b, N);
   printf("\nThe data after moving :\n");
   for (i=0; i<N; i++)  printf("%4d ", b[i]);
   printf("\n");
}