Code
Here is an implementation of the recursive algorithm in Lisp:
(defun mc91 (n) (cond ((<= n 100) (mc91 (mc91 (+ n 11)))) (t (- n 10))))Here is an implementation of the recursive algorithm in C:
int mc91(int n) { if (n > 100) { return n - 10; } else { return mc91(mc91(n+11)); } }Here is an implementation of the non-recursive algorithm in C:
int mccarthy(int n) { int c; for (c = 1; c != 0; ) { if (n > 100) { n = n - 10; c--; } else { n = n + 11; c++; } } return n; }Read more about this topic: McCarthy 91 Function
Famous quotes containing the word code:
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Of black artillery; he comes, though late;
In code corroborating Calvins creed
And cynic tyrannies of honest kings;
He comes, nor parlies; and the Town, redeemed,
Gives thanks devout; nor, being thankful, heeds
The grimy slur on the Republics faith implied,
Which holds that Man is naturally good,
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scourged.”
—Herman Melville (18191891)
“Hollywood keeps before its child audiences a string of glorified young heroes, everyone of whom is an unhesitating and violent Anarchist. His one answer to everything that annoys him or disparages his country or his parents or his young lady or his personal code of manly conduct is to give the offender a sock in the jaw.... My observation leads me to believe that it is not the virtuous people who are good at socking jaws.”
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—Anne C. Weisberg (20th century)