#include "stdio.h"
  #include "15hhap.c"
  main()
  { int i,j;
    static char *p[18]={"main","gou","zhao","lin","wang",
        "zhang","li","zhen","ma","sub","china","beijin",
	"liang","juan","yan","teacher","student","qssort"};
    printf("\n");
    for (j=0; j<=1; j++)
      { for (i=0; i<=8; i++)
          printf("%s , ",p[9*j+i]);
        printf("\n");
      }
    hhap(p,18,2,15);
    printf("\n");
    for (j=0; j<=1; j++)
      { for (i=0; i<=8; i++)
          printf("%s , ",p[9*j+i]);
        printf("\n");
      }
    printf("\n");
  }