<%@ Page Language="C#" Debug="true" %> <%@ Import Namespace="System.IO" %> <%@ Import Namespace="System.Xml" %> <%@ Import Namespace="System.Xml.Xsl" %> <script runat="server"> private string CalcPrimeFactors(string inputText) { string outputText = String.Empty; UInt64 prime; // try this factor (only primes will match!) UInt64 number; // product of the remaining factors if ((inputText == null) || (inputText.Length == 0) || (inputText == "0")) return("no number given."); prime = 2; // start with 2 number = UInt64.Parse(inputText); while ((number > 1) && (prime * prime <= number)) { if (number % prime != 0) { // try the next factor (slowly) prime += 1; } else { // found a factor ! outputText = outputText + " " + prime; number = number / prime; } // if } // while if (number > 1) { // the last factor (a prime) is here. outputText = outputText + " " + number; } return(outputText.Trim()); } // CalcPrimeFactors </script> <% Response.Clear(); string ret = CalcPrimeFactors(Request.QueryString["number"]); Response.Write(ret); %>
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