33 lines
748 B
JavaScript
33 lines
748 B
JavaScript
(() => {
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"use strict";
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// --------------- APPROXIMATION OF E ----------------
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const eApprox = n =>
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// Approximation of E obtained after Nth iteration.
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enumFromTo(1)(n).reduce(
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([fl, e], x) => (
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flx => [flx, e + (1 / flx)]
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)(
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fl * x
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),
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[1, 1]
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)[1];
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// ---------------------- TEST -----------------------
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// main :: IO ()
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const main = () =>
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eApprox(20);
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// --------------------- GENERIC ---------------------
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// enumFromTo :: Int -> Int -> [Int]
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const enumFromTo = m =>
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n => Array.from({
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length: 1 + n - m
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}, (_, i) => m + i);
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// MAIN ---
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return main();
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})();
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