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 Need Help??
As koolade pointed out, not all of these work. Yours in particular goes into deep recursion. Works in theory is not good enough, in golf you are going to learn a lot about the assumptions you cannot make. And yours has at least 2 separate (and serious) mistakes.

BTW the counts as I list them are just for the body of the sub, so if yours did work it would be 51 characters.

Playing independently I came in with several solutions that are small, and the following which is similar to yours really does work at 58:

sub f { my(\$s,\$t)=@_;\$t?\$\$t{d}eq\$s?\$t:f(\$s,\$\$t{l})||f(\$s,\$\$t{r}):0 }
And here, thanks to koolade, is the test that I use:
\$t = { d => 'd', l => { d => 'b', l => { d => 'a', l => 0, r => 0, }, r => { d => 'c', l => 0, r => 0, }, }, r => { d => 'f', l => { d => 'e', l => 0, r => 0, }, r => { d => 'g', l => 0, r => 0, }, } }; sub test { my \$val = f(@_); print \$val ? "\$val->{d}:\$val\n" : "\$val\n"; } test('e',\$t); test('O',\$t);

In reply to Re (tilly) 3: Golf: Tree searching by tilly
in thread Golf: Tree searching by Masem

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