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Towers of Hanoi: Difference between revisions
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It may not be obvious from the pictorial display of the moves, but whenever a disk is moved from one tower to another, it is always the top disk that is moved (to the target tower).
Also, since the pictorial showing of the moves may be voluminous (especially for a larger number of disks), the move counter is started with the maximum and is the count shown is decremented so the viewer can see how many moves are left to display.
<lang rexx>/*REXX program shows pictorial moves to solve Tower of Hanoi (with N disks).*/
parse arg N .; if N=='' then N=3 /*Not given? Then use default 3 disks.*/
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