fork(1) download 
  1. <html>
  2. <head>
  3.     <title></title>
  4. 	<script src="combination.js">
  5. 	</script>
  6. </head>
  7. <body>
  8.     <script>
  9. 	    n=5;
  10. 		document.write("recursive method:</br>");
  11. 		for(m=10;m<=20;m++)
  12. 		{
  13.      		if(m%2==0)
  14. 			    n=m/2;
  15. 		    //document.write("---------------------</br>");
  16. 			start=new Date();
  17. 			//document.write("m="+m+"n="+n+"</br>");
  18. 			ans1=recur_combi(m,n);
  19. 			//document.write("---------------------</br>");
  20. 			end=new Date();
  21. 			//document.write("---------------------</br>");
  22. 			time=end.getTime()-start.getTime();
  23. 			time=time/1000;
  24. 			document.write("recursive ans:"+ans1);
  25. 			document.write("  recursive time:"+time+"sec</br>");
  26.  
  27.  
  28. 			tbody=document.getElementbyId("t1");
  29. 			row=document.createElement("tr");
  30. 			col=document.createElement("td");
  31. 			value=document.createTextNode(m);			
  32. 			col.appendChild(value);
  33. 			row.appendChild(col);
  34.  
  35. 			col=document.createElement("td");
  36. 			value=document.createTextNode(time);
  37. 			col.appendChild(value);
  38. 			row.appendChild(col);
  39.  
  40.  
  41.  
  42. 			//document.write(m+","+n);
  43. 			start=new Date();
  44.      		ans2=loop_combi(m,n);
  45. 			//document.write("loop ans:"+ans2);
  46. 			end=new Date();
  47. 			//document.write("loop ans:"+ans2);
  48. 			time=end.getTime()-start.getTime();
  49. 			document.write("loop ans:"+ans2);
  50. 			document.write("  loop time:"+time/1000+"sec</br>");
  51.  
  52. 			col=document.createElement("td");
  53. 			value=document.createTextNode(time/1000);
  54. 			col.appendChild(value);
  55. 			row.appendChild(col);
  56.  
  57.  
  58. 			tbody.appendChild(row);
  59. 		}
  60.  
  61. 		n=5;
  62. 		document.write("loop method:</br>");
  63. 		/*for(m=10;m<=20;m++)
  64. 		{ 
  65. 		    if(m%2==0)
  66. 			    n=m/2;
  67. 		    start=new Date();
  68.      		ans2=loop_combi(m,n);
  69. 			end=new Date();
  70. 			time=end.getTime()-start.getTime();
  71. 			document.write("loop ans:"+ans2);
  72. 			document.write("  loop time:"+time/1000+"sec</br>");
  73. 			col=document.createElement("td");
  74. 			value=document.createtextnode(time);
  75. 			n=m/2;
  76. 		}*/
  77.     </script>  
  78.  
  79.     <table name="tab1">
  80. 	<tbody id="t1">
  81. 	    <tr><th>m</th><th>遞迴方式</th><th>迴圈方式</th></tr>
  82. 	</tbody>	
  83.     </table>	
  84. </body>
  85. </html>
Not running #stdin #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
https://ideone.com/Fcz8c
language:
JavaScript (rhino 1.7.9)
created:
13 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!