How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Brandon M. Your Own Question

Brandon M.
Brandon M., Web Designer
Category: Programming
Satisfied Customers: 6976
Experience:  Web Design for 10 years, HTML, XML, PHP/MySQL, Perl, JavaScript, CSS
12024030
Type Your Programming Question Here...
Brandon M. is online now
A new question is answered every 9 seconds

I want a easy to read perl program

Resolved Question:

I want a easy to read perl program (the easier the better keep it simple please so I can expand it) to join 2 files using column 1 in both files. In file 1 if any row repeats the column 1 the lowest number should be used same for  file 2  (file 2 f is an example of this) file 1 ------ a 0.000 b -0.234 c -0.456 d -0.678 e -1.345 file 2 ------ c -0.456 d -0.678 f -2.000 f -2.345 f -1.345 a -0.001 output ------- a 0.000 -0.0001 b -0.234 c -0.456 -0.456 d -0.678 -0.678 e -1.345 f -2.345


if there is no value from file 1 it should be


 column1 <empty>  < file 2>


 

Submitted: 1 year ago.
Category: Programming
Expert:  Brandon M. replied 1 year ago.

BeBoo :

Hello and thank you for contacting JustAnswer, a paid expert support site. My name is XXXXX XXXXX I'd be glad to assist you with your issue.

BeBoo :

Do you know if the possible repeats from column 1 will be out of order? (a, a, b, a, etc)

Customer:

yes they will be

Customer:

do you understand the format it didnt help losing the line breaks

BeBoo :

I believe so. The tricky bit will be making sure that the ones that are out of order are included.

BeBoo :

Shouldn't be too hard. Will probably use a few arrays. I assume this will be done via command-line?

Customer:

yes so plan was something like perl.pl file1 file2

Customer:

if it is easier I can sort the data on column 1

Customer:

I guess you still need the array anyway to compare what is in file 2 with file 1

BeBoo :

Yup, so it probably wouldn't matter either way.

BeBoo :

Ok, so the columns are separated by a space or tab?

Customer:

can be either

Customer:

again if it is a problem I can change it to whatever you want

BeBoo :

Ok, just need to know what it should use to separate the columns. Either will work,

Customer:

but best if you could assume white space just i.e. multiple spaces or multiple tabs

BeBoo :

Ok. And when do you need this by?

Customer:

asap but monday would work

Customer:

if you need longer thats Ok as well but earlier would be better

BeBoo :

I will probably have it done today or tomorrow at the latest. Just wanted to see what kind of timeframe we are looking at.

BeBoo :

I have a good start on this, however, I have to leave for the day. I will probably work on this tonight and hope to have something for you in the morning. (GMT-5). Also, is the output provided the actual output expected for the two sets you provided?

Customer:

apart from the formating yes it is

Customer:

I dont care about the order of a b d e f in the output just the values

Customer:

and each output should be 3 columns

Customer:

if file1 value is missing the column should be left empty so the file2 value is aligned with all the other file 2 values

BeBoo :

Got it. Almost done.

BeBoo :

Ok, just working on the output. Trying to determine how to do this. Need to list the letters but can't rely on either file to have every letter. I can just cycle through a-z but if the files end at say "n", everything after that will be blank to z.

Customer:

if its blank to z thats OK with me

Customer:

I can sort that out afterwards

BeBoo :

Ok, great.

BeBoo :

How's this look?

Customer:

looks fine to me

BeBoo :

Great. Here is the code:

Customer:

great look likes it works fine

Customer:

thanks

BeBoo :

If you are familiar with perl, it shouldn't be too hard to understand. Basically, makes sure there are two file names given, then calls the function for both files. The function reads the files and gets the keys (letters) and values (numbers) and puts them into an associative array.

BeBoo :

Then prints out based on keys a-z

Customer:

do I just select excellent and submit for you to be paid?

BeBoo :

That is it. I hope you are satisfied.

Customer:

thanks I am

BeBoo :

Have a great rest of your day.

Brandon M., Web Designer
Category: Programming
Satisfied Customers: 6976
Experience: Web Design for 10 years, HTML, XML, PHP/MySQL, Perl, JavaScript, CSS
Brandon M. and other Programming Specialists are ready to help you

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • My Expert answered my question promptly and he resolved the issue totally. This is a great service. I am so glad I found it I will definitely use the service again if needed. One Happy Customer New York
< Last | Next >
  • My Expert answered my question promptly and he resolved the issue totally. This is a great service. I am so glad I found it I will definitely use the service again if needed. One Happy Customer New York
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • ATLPROG

    Computer Software Engineer

    Satisfied Customers:

    7463
    MS in IT.Several years of programming experience in Java C++ C C# Python VB Javascript HTML
< Last | Next >
  • http://ww2.justanswer.com/uploads/SP/spatlanta2010/2011-6-23_12450_photo.64x64.gif ATLPROG's Avatar

    ATLPROG

    Computer Software Engineer

    Satisfied Customers:

    7463
    MS in IT.Several years of programming experience in Java C++ C C# Python VB Javascript HTML
  • http://ww2.justanswer.com/uploads/ComputersGuru/2010-02-13_051118_Photo41.JPG LogicPro's Avatar

    LogicPro

    Computer Software Engineer

    Satisfied Customers:

    5603
    Expert in C, C++, Java, DOT NET, Python, HTML, Javascript, Design.
  • http://ww2.justanswer.com/uploads/unvadim/2010-11-15_210218_avatar.jpg unvadim's Avatar

    unvadim

    Computer Software Engineer

    Satisfied Customers:

    1158
    Good knowledge of OOP principles. 3+ years of programming experience with Java and C++. Sun Certified Java Programmer 5.0.
  • http://ww2.justanswer.com/uploads/lifesaver333/2010-10-17_191349_ls.jpeg lifesaver's Avatar

    lifesaver

    Computer Software Engineer

    Satisfied Customers:

    950
    Several years of intensive programming and application development experience in various platforms.
  • http://ww2.justanswer.com/uploads/EH/ehabtutor/2012-8-2_202016_1.64x64.jpg ehabtutor's Avatar

    ehabtutor

    Computer Software Engineer

    Satisfied Customers:

    864
    Bachelor of computer science, 5+ years experience in software development, software company owner
  • http://ww2.justanswer.com/uploads/RA/rajivsharma086/2012-6-6_17128_displaypic.64x64.jpg Raj's Avatar

    Raj

    Computer Engg.

    Satisfied Customers:

    860
    BE CS, 4+ Experience in Programming and Database (ERP)
  • http://ww2.justanswer.com/uploads/eljonis/2010-01-06_130406_eljon2.jpg Eljon's Avatar

    Eljon

    Consultant

    Satisfied Customers:

    590
    11 yrs of programming (PHP, WordPress, XSL, SQL, JavaScript)