The stupid question is the question not asked PerlMonks

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Looks like we may need benchmark for this game. Here is the answer, I'll post the complete code in 24 hours so as not to spoil all the fun. It's ~ 30 average lines long and runs under strict. I have included the begining and end. My woodwork teacher used to say look after the edges and the middle will look after itself..... BTW Please enter perlmonks for the prize and donate it to the offering plate when we win!

Hint:

There is only one solution,

brute force is not the key

With code in evolution,

consider the holy three

tachyon

one 435 three 17955 six 820 ten 153 Elapsed 0 seconds #!/usr/bin/perl -w use strict; my \$time = time(); my %tri; # make hash of tiangular numbers 5 digits or less map{\$tri{.5*\$_*(\$_+1)}=1}1..446; ... ... # prove we are right! print "one \$o\$n\$e " if defined \$tri{"\$o\$n\$e"}; print "three \$t\$h\$r\$e\$e " if defined \$tri{"\$t\$h\$r\$e\$e"}; print "six \$s\$i\$x " if defined \$tri{"\$s\$i\$x"}; print "ten \$t\$e\$n\n" if defined \$tri{"\$t\$e\$n"}; \$time = time()-\$time; print "Elapsed \$time seconds\n";

In reply to Re: (Efficiency Golf) Triangular numbers by tachyon
in thread (Efficiency Golf) Triangular numbers by jepri

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 [choroba]: that's 2012 [zentara]: I just acquired a computer with the card type, and wondered if it was best to stick with the open-source code or use NVIDIA's proprietary code [zentara]: do you feel good about a non-open-source code, being in control of your display functions? [choroba]: If you're not going to play 3d games on it, using the open source driver should be enough [zentara]: choroba that is true, and the wise choice, but I want to see how fast I can get fglrx3dspheres to run... just as an intellectual challenge :-)

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