A cool way to find out whether a number is palindromichttp://weblogs.asp.net/esanchez/archive/2008/05/06/a-cool-way-to-find-out-whether-a-number-is-palindromic.aspxIn this blog entry I proposed a solution to Problem 4 at Project Euler , a crucial element of the problem is to find out whether a number is a palindrome (909 is, 809 isn't), a bit out of laziness and a bit in order to reuse existing methods, I decidedenCommunityServer 2007 SP1 (Build: 20510.895)projecteulerhttp://weblogs.asp.net/esanchez/archive/2008/05/06/a-cool-way-to-find-out-whether-a-number-is-palindromic.aspx#6218660Sat, 24 May 2008 20:49:21 GMTc06e2b9d-981a-45b4-a55f-ab0d8bbfdc1c:6218660projecteulerprojecteuler<p>Pingback from &nbsp;projecteuler</p> <img src="http://weblogs.asp.net/aggbug.aspx?PostID=6218660" width="1" height="1">re: A cool way to find out whether a number is palindromichttp://weblogs.asp.net/esanchez/archive/2008/05/06/a-cool-way-to-find-out-whether-a-number-is-palindromic.aspx#6194848Fri, 16 May 2008 07:48:40 GMTc06e2b9d-981a-45b4-a55f-ab0d8bbfdc1c:6194848JayJay<p>The F# version is almost identical:</p> <p>let rec tailReverseNumber n res =</p> <p> &nbsp; &nbsp;match n with</p> <p> &nbsp; &nbsp;| 0 -&gt; res</p> <p> &nbsp; &nbsp;| _ -&gt; tailReverseNumber (n/10) (10*res+n%10)</p> <p>let isPalindrome n =</p> <p> &nbsp; &nbsp;n = tailReverseNumber n 0</p> <img src="http://weblogs.asp.net/aggbug.aspx?PostID=6194848" width="1" height="1">re: A cool way to find out whether a number is palindromichttp://weblogs.asp.net/esanchez/archive/2008/05/06/a-cool-way-to-find-out-whether-a-number-is-palindromic.aspx#6164019Wed, 07 May 2008 01:44:20 GMTc06e2b9d-981a-45b4-a55f-ab0d8bbfdc1c:6164019rajbkrajbk<p>AFAIK and seen, even though the CLR supports tail recursion, the C# compiler has not implemented it yet.</p> <p><a rel="nofollow" target="_new" href="https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=166013&amp;wa=wsignin1.0">connect.microsoft.com/.../ViewFeedback.aspx</a></p> <p>Raj</p> <img src="http://weblogs.asp.net/aggbug.aspx?PostID=6164019" width="1" height="1">re: A cool way to find out whether a number is palindromichttp://weblogs.asp.net/esanchez/archive/2008/05/06/a-cool-way-to-find-out-whether-a-number-is-palindromic.aspx#6162841Tue, 06 May 2008 18:22:33 GMTc06e2b9d-981a-45b4-a55f-ab0d8bbfdc1c:6162841Dustin CampbellDustin Campbell<p>Very nicely done Edgar!</p> <img src="http://weblogs.asp.net/aggbug.aspx?PostID=6162841" width="1" height="1">