Hello External sorting is well defined by Prof. Knuth as sorting process in the files and not in memory. For example, I want to sort 100GB on my machine with 1GB RAM. I don't think that STL and standard binary sort will do that they are all in-memory sorting codes. Mir <div class="gmail_quote">On Tue, Feb 23, 2010 at 4:30 PM, Karl Auer <<a href="mailto:kauer@biplane.com.au">kauer@biplane.com.au</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="im">On Tue, 2010-02-23 at 15:53 -0600, MirJafar Ali wrote: > Does someone know any external sorting code written in C/C++ </div>Could you tell us what you mean by "external sort"? C/C++ have various sort routines in their standard libraries, and code for sorting is available everywhere. Try searching Google for "C/C++ sort source code". Regards, K. -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Karl Auer (<a href="mailto:kauer@biplane.com.au">kauer@biplane.com.au</a>) +61-2-64957160 (h) <a href="http://www.biplane.com.au/%7Ekauer/" target="_blank">http://www.biplane.com.au/~kauer/</a> +61-428-957160 (mob) GPG fingerprint: B386 7819 B227 2961 8301 C5A9 2EBC 754B CD97 0156 Old fingerprint: 07F3 1DF9 9D45 8BCD 7DD5 00CE 4A44 6A03 F43A 7DEF -- ubuntu-users mailing list <a href="mailto:ubuntu-users@lists.ubuntu.com">ubuntu-users@lists.ubuntu.com</a> Modify settings or unsubscribe at: <a href="https://lists.ubuntu.com/mailman/listinfo/ubuntu-users" target="_blank">https://lists.ubuntu.com/mailman/listinfo/ubuntu-users</a> </blockquote></div>