Fibonacci sequence: Difference between revisions
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(This version defines <tt>fib(0) = 0</tt> because [http://www.research.att.com/~njas/sequences/A000045 OEIS A000045] does.) |
(This version defines <tt>fib(0) = 0</tt> because [http://www.research.att.com/~njas/sequences/A000045 OEIS A000045] does.) |
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=={{header|EchoLisp}}== |
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Use '''memoization''' with the recursive version. |
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<lang scheme> |
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(define (fib n) |
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(if (< n 2) n |
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(+ (fib (- n 2)) (fib (1- n))))) |
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(remember 'fib #(0 1)) |
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(for ((i 12)) (write (fib i))) |
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0 1 1 2 3 5 8 13 21 34 55 89 |
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</lang> |
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=={{header|ECL}}== |
=={{header|ECL}}== |
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