horrible.c

/* sixthgear's horrible inplace reverse */

#include <stdio.h>

int
main()
{
	int i;
	int l = 9;
	int a[] = {1,2,3,4,5,6,7,8,9};
	
	/* the dirty deed */
	for (i=-1; ++i<l+l/2?i%l==l-i%l-1?i++:1:0; a[i%l]^=a[l-i%l-1]);
	/* print this mess */
	for (i=0; i<l; printf("%d ", a[i++]));
	
	return 0;
}