16.11
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Zadania/Z75b - liczby fibonacciego rek/index.php
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51
Zadania/Z75b - liczby fibonacciego rek/index.php
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<!doctype html>
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<html lang="pl">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport"
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content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<title>Z75b - Liczby Fibonacciego rekurencyjnie</title>
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<link rel="stylesheet" href="style.css">
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</head>
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<body>
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<header>
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<h1>Zadanie Z75b</h1>
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<h2>Autor: Jakub Grzegorczyk</h2>
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</header>
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<div class="box">
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<p>Napisz program, który dla danej liczby całkowitej n wypisuje wyrazy ciągu Fibonacciego według zależności</p>
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<img src="075.png" alt="Zależność Fibonacciego">
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<p>Dla n=20 program powinien wypisać: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, 1597, 2584, 4181, 6765</p>
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</div>
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<div class="box">
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<form action="index.php" method="post">
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<fieldset>
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<label for="n">Podaj Liczbę N:</label>
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<input type="number" name="n" id="n">
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</fieldset>
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<button type="submit">Wyślij</button>
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</form>
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</div>
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<?php
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function fib($n) {
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if ($n === 0) return 0;
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else if ($n === 1) return 1;
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else return fib($n-1) + fib($n-2);
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}
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if ($_SERVER['REQUEST_METHOD'] == 'POST') {
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$n = htmlspecialchars($_POST['n']);
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echo '<div class="box">';
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$ciag_fib = array();
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for ($i = 0; $i <= $n; $i++) {
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$ciag_fib[] = fib($i);
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}
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for ($i = 0; $i < sizeof($ciag_fib); $i++) {
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echo 'F(' . $i . ') = ' . $ciag_fib[$i] . ' <br>';
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}
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echo '</div>';
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}
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?>
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</body>
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</html>
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