1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
/* $OpenBSD: t18.in,v 1.1 2003/12/09 12:49:01 otto Exp $ */
/*
* Copyright (c) 2003 Amit Singh <amit_s@acm.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* The Towers Of Hanoi
* bc version
* http://hanoi.kernelthread.com
*/
define moveit(i, j) {
print "move "
print i
print " --> "
print j
print "\n"
}
define dohanoi(n, h, d, o) {
if (n > 0) {
silence = dohanoi(n-1, h, o, d)
silence = moveit(h, d)
silence = dohanoi(n-1, o, d, h)
}
}
define hanoi(n) {
silence = dohanoi(n, 1, 3, 2)
}
hanoi(5)
|
