Posted on 13 April 201211 October 2017 by Tom Beware of bugs Beware of bugs in the above code; I have only proved it correct, not tried it. Donald Knuth (in 1977; explanation here) Share this:Share Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Share on LinkedIn (Opens in new window) LinkedIn Share on Reddit (Opens in new window) Reddit Email a link to a friend (Opens in new window) Email Like Loading... Related