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

Answer 15

i need a medium-hard problem on inverse variation to prove my knowledge on it. ca

Answer 16

Which of following statements is true about scientific knowledge?

Scientific ideas are not subject to change, and so knowledge stays the same.

Answer 17

Which of following statements is true about scientific knowledge?
Scientific ideas are not subject to change, and so knowledge stays the same.

Answer 18

Which of following statements is true about scientific knowledge?

Scientific ideas are not subject to change, and so knowledge stays the same.

Answer 19

If I write a Perl script on Ubuntu, is there any way I can compile the script into an executable for Windows computers that do not have Perl installed? I k

Answer 20

@perl HI Perl Long time no talk :P Would you mind starting me off on this problem! It is the intergral of ln^2x+2lnx-1/x.

Answer 21

Execute a Perl command that will display the version of the Perl distribution you are currently using.

Answer 22

Execute a Perl command that will display the version of the Perl distribution you are currently using.

Answer 23

any budy know perl language please explane features of perl?

Answer 24

Vocal.

Answer 25

Approximately what portion of North America is covered by forests?\nQuestion 1 op

Answer 26

Describe the location of Greek homeland (including Macedonia) before 334 BCE.

Answer 27

This is a doozy of an assignment plz help

Answer 28

What is the value of the expression when a=6, b=4, and c=8?\n\n2a\n\u2014\u2014\n

Answer 29

Absolute Value Explanation

Answer 30

Answer check~

Answer 31

Ruling on posting random posts. Any rules on that? @Vocaloid @Ultrilliam

Answer 32

What does the fox say?

Answer 33

-17.9 - 4.2\nWrite this in addition form~

Answer 34

Is this correct?

Answer 35

test

Answer 36

i need help

Answer 37

Earthquakes are especially associated with _____ boundaries.\n\ndivergent\nconver

Answer 38

Common Denominators~

Answer 39

Select all that apply.\n\n_____ is a place where the crust of the lithosphere has fractured.

Answer 40

n one school district the number of computers in the computer lab is proportional to the number of students in the school.

Answer 41

The author of \u201choly war\u201d uses a causality chain to develope the poem be

Answer 42

Which of the following options is not a resulting situation of two plates colliding at a convergent boundary?\n\nThe plate that has greater density sinks un

Answer 43

What is the main evidence for the structure of the Earth that occur from the gene