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Posted By

whitetiger on 11/09/06


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PHP - InversoMoltiplicativo

Published in: PHP 

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  1. <html>
  2. 	<head>
  3. 		<title>Calcolo degli inversi moltiplicativi</title>
  4. 	</head>
  5.  
  6. 	<body>
  7. 		<center>
  8. 		<b>Cancolo dell'Inverso Moltiplicativo</b>
  9. 		<br><hr><br>
  10. 		<table border="1" align="center">
  11. 		<?php
  12. 			for($i=0; $i<26; $i++)
  13. 			{
  14. 		?>
  15. 			<tr>
  16. 		<?php
  17. 				for($j=0; $j<26; $j++)
  18. 				{
  19. 					if($i==0) echo "<td bgcolor=\"yellow\" align=\"center\">" . $j . "</td>";
  20. 					else
  21. 					if($j==0) echo "<td bgcolor=\"yellow\" align=\"center\">" . $i . "</td>";
  22. 					else
  23. 					{
  24. 						echo "<td align=\"center\">" . $i*$j . "</td>";
  25. 						$matrice[$i-1][$j-1] = $i*$j;
  26. 					}
  27. 				}
  28. 		?>
  29. 			</tr>
  30. 		<?php
  31. 			}
  32.  
  33. 			for($i=0; $i<25; $i++)
  34. 				for($j=0; $j<25; $j++)
  35. 					$matrice[$i][$j] = $matrice[$i][$j]%26;
  36. 		?>
  37. 		</table>
  38. 		<br><hr>
  39. 		<b>Tabella dell'Inverso Moltiplicativo</b>
  40. 		<br><hr><br>
  41. 		<table border="1" align="center">
  42. 		<?php
  43. 			for($i=0; $i<26; $i++)
  44. 			{
  45. 				echo "<tr>";
  46.  
  47. 				for($j=0; $j<26; $j++)
  48. 				{
  49. 					if($i==0) echo "<td bgcolor=\"yellow\" align=\"center\">" . $j . "</td>";
  50. 					else
  51. 					if($j==0) echo "<td bgcolor=\"yellow\" align=\"center\">" . $i . "</td>";
  52. 					else
  53. 					{
  54. 						echo "<td align=\"center\" " . (($matrice[$i-1][$j-1] == 1)?"bgcolor=\"red\"":"") . "\">" . $matrice[$i-1][$j-1] . "</td>";
  55.  
  56. 						if($matrice[$i-1][$j-1] == 1)
  57. 							$np[] = $i;
  58. 					}
  59. 				}
  60.  
  61. 				echo "</tr>";
  62. 			}
  63. 		?>
  64. 		</table>
  65. 		<br>
  66. 		<i><b>I numeri primi con 26 sono:
  67. 		<?php
  68. 			for($i=0; $i<count($np); $i++)
  69. 				echo $np[$i] . " ";
  70. 		?>
  71. 		</b></i>
  72. 		<br><br>
  73. 		Si prendono le coppie di numeri che contengono il numero 1 al loro interno, esempio (1,1), (3,9)......
  74. 		</center>
  75. 	</body>
  76. </html>

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