Build Simple Program for Reading & Writing CSV files

I need a simple program that will do the following:

1 – User will input a CSV file and the program will read all the IP addresses in column A

2 – The program will then replace the 4th octet of each IP address with a randomly generated number between 1 and 255 (and make sure the randomly generated number is not the same as the original number in the 4th octet)

3 – Output a new CSV file with the new IP addresses in column A (4th octet replaced with random number between 1 and 255), and keep all the original information from columns B, C & D from the input file in the new output file.

The program will need to be able to handle CSV files with up to 1 million rows.

PLEASE SEE THE ATTACHED sample “input” and “output” files for further clarification…

Please include a brief description with your bid to describe how you’d develop the program (brief description at a high level). This lets me know you read and studied the project description thoroughly.

Thank you and looking forward to working together.


Habilidades: Programação C++ , Programação de Banco de Dados, Java, Arquitetura de software, Desenvolvimento de Software

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Acerca do Empregador:
( 74 comentários ) Fort Worth, United States

ID do Projeto: #15174264

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Hello If you accept Python to be used for the solution, this shall be a really easy and (really) quick to do work. If input files are too big, a limitation will be to read thm in portions, that's all Relevant Skills Mais

$35 USD em 10 dias
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21 freelancers are bidding on average $74 for this job


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I can create simple GUI program (Windows, Mac or Linux) that will allow user to select CSV file and after Start it will change last octet of each IP with random number not equal to the original value Relevant Skills a Mais

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Hello, I reviewed the Sample input [url removed, login to view] you attached and read all the details. If you have a Windows PC I can create you a desktop application to produce the results you want. Please feel free to contact me if y Mais

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Hi, I would like to create a php script that will take csv file, replace 4th octate of first column with random number and generates new csv. Relevant Skills and Experience php Proposed Milestones $66 USD - after com Mais

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Hello, since you have data in CSV - this could be easily done with VBA for Excel. I would make a macro that would do what you request. Relevant Skills and Experience I have a lot of experience with similar scripts, I Mais

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This can be developed in either Java or Python. The former would allow a traditional window with Browse button for user to select a folder or individual CSV file. Relevant Skills and Experience I have developed mul Mais

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