473,746 Members | 2,667 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

Multidimensiona l sort

How do I sort this:
>>a
[['3', ['1', '0']], ['4', ['3', '0'], ['2', '0']]]

where the list can be arbitrarily large by the 3rd dimension (i
think). E.g.:
>>a
[['3', ['1', '0']], ['4', ['2', '0'], ['3', '0']]]
Thanks

Oct 10 '07 #1
1 1145
On Oct 10, 8:47 pm, termiflyer <dpfl...@earthl ink.netwrote:
How do I sort this:
>a

[['3', ['1', '0']], ['4', ['3', '0'], ['2', '0']]]

where the list can be arbitrarily large by the 3rd dimension (i
think). E.g.:
>a

[['3', ['1', '0']], ['4', ['2', '0'], ['3', '0']]]
There's no canonical way to sort arbitrary data. For instance should
[1, 2, 3] come before or after [1, 3, 2]? Should [1] come before or
after [[1]]? Is there some structure to your data, or can it be any
values? Are all your strings made of digits, and should they be
compared as numbers (ie should '10' come after '2'?)

If you can say how to compare two of your data, say by defining a
compare function
def cmp(a, b):
...

Then you can sort your list using sorted(my_list, cmp=cmp).

Without knowing what your data means, and what you're planning to do
with it, it's not possible for anyone to answer your question
properly.

--
Paul Hankin

Oct 10 '07 #2

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

1
13653
by: Brian | last post by:
I have an array like this: $events = array( array( '2003-07-01', 'Event Title 1', '1' //ID Number (not unique) ), array( '2003-07-02',
2
2005
by: markus | last post by:
I usually store info in arrays using field names $array='Germany', $array="GE"; $array='United Sates" $array="US"; $array='France" $array='FR"
1
2142
by: Gaspard Kayitare | last post by:
I would like to know how to use multidimensional arrays principles for sorting grades for four students obtained in four subjects.I am supposed to arrange the data in a form of a table,students names by rows and subjects/course units by columns.How should I organise my c++ code.The program should sort the grades of each students in ascending or descending orders.
9
6670
by: Charles Banas | last post by:
i've got an interesting peice of code i'm maintaining, and i'd like to get some opinions and comments on it, hopefully so i can gain some sort of insight as to why this works. at the top of the function (which was translated from Fortran code), among other heinous and numerous declarations, is this bit: static float bbuff; static int bkey; static int buse;
11
2102
by: Joshua Russell | last post by:
Hi, I wish to parse an XML file into some sort or array or multidimensional storage. The XML file is as follows (without any parent tags just to give you an idea of the structure)... <Ship Name="Disrupter" Class="CC" PrimaryTarget="CR" BattleOrder="1" Guns="5" Power="2"></Ship> <Ship Name="Zealot" Class="CR" PrimaryTarget="CC" BattleOrder="2" Guns="25" Power="5"></Ship> <Ship Name="Drone" Class="CC" PrimaryTarget="CC" BattleOrder="3"...
2
1373
by: Henrik | last post by:
im reciving an error when i tries to read multidimensional XML data, into my system. I'm receving the same errors discriped at: http://support.microsoft.com/default.aspx?scid=kb;en-us;325695 And http://support.microsoft.com/kb/325696/EN-US/ But I can't find a solution for the problem???
16
3620
by: Rehceb Rotkiv | last post by:
Hello everyone, can I sort a multidimensional array in Python by multiple sort keys? A litte code sample would be nice! Thx, Rehceb
2
4790
by: glbdev | last post by:
I have a multidimensional array with 5 keys. I need to perform a alpha sort on the 3rd key. Does anyone have an example on how to do this? Here is an example of what my array consists of: mArray(i,0) = '2007-05-02" mArray(i,1) = "6:00pm" mArray(i,2) = "TEXT TEXT TEXT" <------------------ NEED TO DO ALPHA SORT ON THIS KEY ----------------<<
9
4499
by: Slain | last post by:
I need to convert a an array to a multidimensional one. Since I need to wrok with existing code, I need to modify a declaration which looks like this In the .h file int *x; in a initialize function: x = new int;
0
8974
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, weíll explore What is ONU, What Is Router, ONU & Routerís main usage, and What is the difference between ONU and Router. Letís take a closer look ! Part I. Meaning of...
0
8800
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
0
9349
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...
1
9285
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
0
9218
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
0
6060
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...
0
4575
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
0
4836
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
3
2199
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.