Reverse number logic using integer

Reverse number logic using integer :

        public static int reverseNumber(int i)

        {

            int temp = 0;

            while (i > 10)

            {

                int num = i % 10;

                temp = (temp * 10) + num;

                i = i / 10;

            }

            temp = (temp * 10) + i;

            return temp;

        }

Find trailing zero of n factorial

Hello,

Here is small logic program to find trailing zero in n factorial. (n > 0). Here we are dividing the passing parameter with power of 5.

e.g .  Take 51.   How many trailing zero for 51 factorial. Let’s start. 

          Now Take 5  and divide 51 with 5 will ans. = 51/5 = 10  let  save  10 in variable.

          Now increase power of 5 = 5²  = 25 and divide 51 with 25 = 51/25 = 2.

         Add ans in previous answer 10+2 = 12

         Now increase power of 5 = 5³ = 125.  Now check 51/124  < 0.

         so it is not possible more to divide 51.

          So  your answer  = 12

Here is C# implementation for this logic.

        public static double ZeroCnt(int num)

        {

            int cnt, pow, number;

            cnt = 0;

            pow = 1;

            number = 5;

            while (number < num)

            {             

                cnt +=  num / number;

                pow ++;

                number = Convert.ToInt32(Math.Pow(5, pow));

            }

            return cnt;

        }

Set Page as Home Page from Javascript

function setHomepage() {

if (document.all) {

   document.body.style.behavior = 'url(#default#homepage)';

   document.body.setHomePage('http://www.google.co.in');

}

else if (window.sidebar) {

   if (window.netscape) {

      try {

          netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");

      }

      catch (e) {

        alert("this action was aviod by your browser,if you want to enable,

please enter about:config in your address line,and change the value of signed.applets.codebase_principal_support to true");

      }

   }

var prefs = Components.classes['@mozilla.org/preferences-service;1']

                      .getService(Components.interfaces.nsIPrefBranch);

prefs.setCharPref('browser.startup.homepage', 'http://www.google.co.in');

  }

}

Make your own JQuery plugin

JQuery plugin :   

        (function ($) {

            $.fn.HelloWorld = function (e) {

                alert(e);

            }

        }(jQuery)); 

Use Plugin :

 

        $(document).ready(function () {

            $("#temp").HelloWorld("Test Plugin");

        })

Multicasting in Delegate

Multicast Delegates :

    Delegate multicast is that we can point more than one function at a time. A multicast delegate maintains a list of functions that will all be called when the delegate is invoked

    public class MyClassName

    {

        public delegate void delgName();

        public void main()

        {

            delgName dgt = new delgName(main1);

            dgt += new delgName(main2);

            dgt();

        }

        public void main1()

        {

        /// this will called first

        }

        public void main2()

        {

        /// this will called secondly

        }

    }

Dynamic form design in Jquery

Download project from  Here

Signature control using Canvas

<script type="text/javascript">

        var ctx, cnvs;

        $(document).ready(function () {

            cnvs = document.getElementById("cnvs");

            ctx = cnvs.getContext("2d");

            cnvs.onmousedown = function (e) {

                ctx.beginPath();

                ctx.moveTo(e.offsetX, e.offsetY);

                cnvs.onmousemove = function (e) {

                    ctx.lineWidth = 2;

                    ctx.lineTo(e.offsetX, e.offsetY);

                    ctx.stroke();

                }

            }

            cnvs.onmouseup = function (e) {

                cnvs.onmousemove = null;

            }

            $("#btnSave").click(function () {               

                var imgUrl = cnvs.toDataURL("");

                $("#imgSign")[0].src = imgUrl;

            });

        });       

    </script>

<div>

   <canvas id="cnvs" width="300" height="200" style="border: 1px solid #808080"></canvas>

  <input type="button" value="Save" id="btnSave"/>

  <br />

  <img id="imgSign" />

</div>