Question

Anyone with knowledge of perl here?

Answer 1

Oke so I'm new to perl, need it for my bioinformatics minor.

Just playing around a little and I stumbled upon something that's probably very easy, but I can't get it to work.

I have a hash:

my %symbol=(
"1"=>"H",
"2"=>"He",
"3"=>"Li",
"4"=>"Be",
"5"=>"B",
"6"=>"C",
"7"=>"N",
"8"=>"O",
"9"=>"F",
"10"=>"Ne",
"11"=>"Na",
"12"=>"Mg",
"13"=>"Al",
"14"=>"Si",
"15"=>"P",
"16"=>"S",
"17"=>"Cl",
"18"=>"Ar",
"19"=>"K",
"20"=>"Ca",
);

the first number is an atomic number, the value is the corresponding atom abbreviation.
atomic number 1 is hydrogen which is H

what I need is to enter a value, and the program should return the element symbol

so if I enter 15, it should return P

No idea how to do this xD

Answer 2

my $atomicNumber=<STDIN>;chomp($atomicNumber);

Answer 3

Another way is to put it in an array instead of a hash, can I return the nth value in an array? That way I only have to put them in order in a 1-dimensional table. The 18th value in the array would be Ar. How to I get the 18th value?

Answer 4

@e.mccormick

Answer 5

Do you know this? @Opcode

Answer 6

I only learned enough Perl to modify some scripts other made. But I googled up perl data types and found this:

http://www.oreillynet.com/pub/a/perl/excerpts/9780596000271/data-structures.html

It looks like you have some good options there.

Answer 7

oh wow thanks, first example already does the trick :)

Answer 8

1st I c a thanks from you thomaster :D

Answer 9

haha 2 months later this question would have been easy peasy :P
been working on much more complex problems since

Answer 10

pffft i dun believe dat ;p

Answer 11

All it takes is familiarity with the specifics of a language and knowledge of programming theory. After 2 months, I bet his familiarity is a lot better.

Answer 12

@perl how about you help here? :P

Answer 13

She has perls of wisdom, not perls of code.

Answer 14

LOL