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03.26.2008 at 09:19AM PDT, ID: 23271019
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I have a .c program for a mergesort for numbers and I need to do it for titles and numbers.
Tags: C
what is the syntax for mergesort when you are writing "Comic Book titles and volumes"? I have a Algorithm for numbers, but I need to know how to place insert a file and read the file and sort them into alphabetical order, then in chronological order.

for exaple:

comic books    volumes

abc                     #3
rdy                     #2
ghi                      #7
jkl                       #5
asd                    #9
abc                     #8
rdy                     #6
ghi                      #8
jkl                       #1
asd                    #3
abc                    #1
rdy                     #6
ghi                      #0
jkl                       #4
asd                    #3


I need these to be in order alphabetically and chronologically

I have attached the file that I have and I need to make it read a list of comic books and display them.
Attachments:
 
a mergesort algorithm in c
 
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Question Stats
Zone: Programming
Question Asked By: mikeregas
Solution Provided By: Infinity08
Participating Experts: 1
Solution Grade: A
Views: 0
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03.26.2008 at 09:47AM PDT, ID: 21213639

Rank: Sage

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03.26.2008 at 10:00AM PDT, ID: 21213798

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03.26.2008 at 10:10AM PDT, ID: 21213925

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03.26.2008 at 10:22AM PDT, ID: 21214048

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03.26.2008 at 11:26AM PDT, ID: 21214709

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03.26.2008 at 08:19PM PDT, ID: 21218274

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03.27.2008 at 02:05AM PDT, ID: 21219560

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03.27.2008 at 02:47PM PDT, ID: 21226103

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03.31.2008 at 01:30AM PDT, ID: 21243886

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03.26.2008 at 09:47AM PDT, ID: 21213639

Rank: Sage

The algorithm remains the same. The only things that change are :

1) how you read a value (it's now a string instead of a number)
2) how you compare two values (comparing strings instead of numbers)
3) how you move values in memory (moving strings instead of numbers)
 
03.26.2008 at 10:00AM PDT, ID: 21213798
I am very new to programming and I am learning c and java at the same time, so I am getting thoughly confused with the syntax for both. I think I am getting them mixed up with each other, so how do you read in the file or value? how do you do the string compare and how do you move the values in memory? Thanks
 
03.26.2008 at 10:10AM PDT, ID: 21213925

Rank: Sage

The merge sort algorithm is just an algorithm for sorting data. It does not depend in what data you want to sort.

When implementing merge sort for a certain data type, you'll need to pay attention to use that data type correctly.

You can modify the code that sorts numbers to sort strings by going over the code, and modifying each part that is specific to numbers (reading, writing, comparing, etc.).

Do you understand how the algorithm works ?
Do you understand how the code for sorting numbers works ? (did you write it yourself ?)
 
03.26.2008 at 10:22AM PDT, ID: 21214048
I understand the general algorythm and the idea behind it. I did not write this. I am getting confused with the syntax that I need to use for java and for c.
 
03.26.2008 at 11:26AM PDT, ID: 21214709

Rank: Sage

>> I did not write this.

Then the first thing I would do is read the code, and understand how it works (completely). Only then will you be able to correctly modify the code for strings.
 
03.26.2008 at 08:19PM PDT, ID: 21218274
would this be an easier program if I was to do it in multiple functions or just keep everything in the main?
 
03.27.2008 at 02:05AM PDT, ID: 21219560

Rank: Sage

>> would this be an easier program if I was to do it in multiple functions or just keep everything in the main?

The code you posted already is in functions (as it should).
 
03.27.2008 at 02:47PM PDT, ID: 21226103
Do I need to have seperate functions for this program or cant I have all of it in the main function?
 
03.31.2008 at 01:30AM PDT, ID: 21243886

Rank: Sage

Sorry for the late reply ... I've been offline for a while.

You can have everything in one main if you really want to, but it's a lot cleaner and a lot easier to maintain if you create functions to split up the code in manageable blocks (like it is in the code you posted).
Accepted Solution
 
 
20080236-EE-VQP-29 / EE_QW_2_20070628