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Given two arrays containing the same elements (all distinct) in different orders, how does one most efficiently identify the permutation applied to the first to yield the second? I know one can create a map from elements to their indices in the second array, and then loop over the first accumulating the map's value for each element. But I feel there ought to be a lighterweight solution that doesn't involve constructing a temporary hashtable or BST. (I guess there can't be an asymptotically faster algorithm: it must be able to generate all possible permutations, so it must do work just like a sort.) -- Tardis ( talk) 01:46, 20 August 2011 (UTC)
I want to write a java script program. Is there any compiler for that or should I use notepad? Thanks-- 180.234.94.35 ( talk) 10:50, 20 August 2011 (UTC)
How do I get the source code for Firefox? Asked by 123.24.96.94 ( talk) at 12:09, 20 August 2011 (UTC)
Or for a more casual approach, perhaps ftp://releases.mozilla.org/pub/mozilla/pub/mozilla.org/firefox/releases/6.0/source/firefox-6.0.source.tar.bz2 ¦ Reisio ( talk) 20:31, 21 August 2011 (UTC)
One of my hard disks has fallen on the floor and cannot be accessed by a Windows system booted from another disk. It lists the contents as RAW. However, I can still copy most of the files accessing it from Linux. What I need is to get to my Chrome bookmarks. But where are they kept? Hoppafrogg ( talk) 14:25, 20 August 2011 (UTC)
I am running an instance of Windows 7 in a virtual machine on a Mac. This problem is new in that I haven't done much with the VM after this started happening. All internet browsers, whether they be Firefox, IE, or Google Chrome, revert back to the previous page. I even hear the "click" associated with clicking the back button. This even happens with Windows Explorer and the Control Panel. I tested to see if it was a stuck backspace key on my Mac's keyboard by disabling it with the Bluetooth button up in OS X's start bar. That didn't help. I then tried some more troubleshooting a month or two later by logging in, opening Command Prompt, and entered
net user administrator /active:yes
and I turned off the keyboard this time. I logged into the hidden administrator account that I enabled and opened up the on screen keyboard. The problem was gone and I thought it was one of those weird glitches that is solved by doing something different. So, I rebooted my VM and logged back into to my normal account with my Mac keyboard powered on. Loath (yes, loath) and behold, it was happening again. What possibly could be causing this and what can I do? (This has not been happening in my other Windows 7 VM.) -- Melab±1 ☎ 14:47, 20 August 2011 (UTC)
Hello, I am interested in sending my old computer system to any African school who would really need another computer.
What programs/organizations/etc. would help me with this? Thanks. -- 70.179.163.168 ( talk) 15:00, 20 August 2011 (UTC)
I am desirous of adding a short phrase at the end of a heading in the style of normal body text. So, pretending that bold italic is the style for a level 3 heading (h3), a normal heading might look like:
This is the heading
I want to add a bit to the heading in normal body text, in a 'span', so the result looks like
This is the heading body text.
What is the name of the default style for body text?
--
SGBailey (
talk) 15:25, 20 August 2011 (UTC)
There've been a good deal of discussions about the use of diacritics where people opposed to the use of diacritics have asserted that not only do many people not know how to type them, but most computers/keyboards (or U.S.-sold computers) cannot type them. I would think that at least through non-default language options, or keystrokes like Alt + ASCII number codes, or if not these special software, this wouldn't be a problem. So, can most computers type diacritics? can that many not at all? — innotata 16:38, 20 August 2011 (UTC)
Many Unix systems have long had a Compose key that allows diacritics to be typed in the windowing system. On Linux systems, the user may have to configure this in the keyboard preferences, since the PC keyboard does not include a Compose key by default, but does have an abundance of recently-added keys (Windows and Menu keys) that are useless in Linux unless put to some particular purpose. — FOo ( talk) 08:47, 21 August 2011 (UTC)
I'm having difficulty getting Excel to differentiate between a period of time versus the time. In short I need to sum a column of time periods such as 12:45:30 (12 hours, 45 minutes, 30 seconds) but Excel insists on handling it as fourteen and a half minutes before 1pm. I need everything to be formatted as hhh:mm:ss. The total of the column would be hundreds of hours and an some individual entries would exceed 24 hours. The answer to a sum of time periods is not "Next Wednesday at 09:45:25" Roger ( talk) 16:44, 20 August 2011 (UTC)
I am trying to download files. Anything larger than 1.2mb seems to get stuck. The problem seems to be caused by a setting which is wrong on my router. What setting might this be? Kittybrewster ☎ 20:33, 20 August 2011 (UTC)
Computing desk | ||
---|---|---|
< August 19 | << Jul | August | Sep >> | August 21 > |
Welcome to the Wikipedia Computing Reference Desk Archives |
---|
The page you are currently viewing is an archive page. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages. |
Given two arrays containing the same elements (all distinct) in different orders, how does one most efficiently identify the permutation applied to the first to yield the second? I know one can create a map from elements to their indices in the second array, and then loop over the first accumulating the map's value for each element. But I feel there ought to be a lighterweight solution that doesn't involve constructing a temporary hashtable or BST. (I guess there can't be an asymptotically faster algorithm: it must be able to generate all possible permutations, so it must do work just like a sort.) -- Tardis ( talk) 01:46, 20 August 2011 (UTC)
I want to write a java script program. Is there any compiler for that or should I use notepad? Thanks-- 180.234.94.35 ( talk) 10:50, 20 August 2011 (UTC)
How do I get the source code for Firefox? Asked by 123.24.96.94 ( talk) at 12:09, 20 August 2011 (UTC)
Or for a more casual approach, perhaps ftp://releases.mozilla.org/pub/mozilla/pub/mozilla.org/firefox/releases/6.0/source/firefox-6.0.source.tar.bz2 ¦ Reisio ( talk) 20:31, 21 August 2011 (UTC)
One of my hard disks has fallen on the floor and cannot be accessed by a Windows system booted from another disk. It lists the contents as RAW. However, I can still copy most of the files accessing it from Linux. What I need is to get to my Chrome bookmarks. But where are they kept? Hoppafrogg ( talk) 14:25, 20 August 2011 (UTC)
I am running an instance of Windows 7 in a virtual machine on a Mac. This problem is new in that I haven't done much with the VM after this started happening. All internet browsers, whether they be Firefox, IE, or Google Chrome, revert back to the previous page. I even hear the "click" associated with clicking the back button. This even happens with Windows Explorer and the Control Panel. I tested to see if it was a stuck backspace key on my Mac's keyboard by disabling it with the Bluetooth button up in OS X's start bar. That didn't help. I then tried some more troubleshooting a month or two later by logging in, opening Command Prompt, and entered
net user administrator /active:yes
and I turned off the keyboard this time. I logged into the hidden administrator account that I enabled and opened up the on screen keyboard. The problem was gone and I thought it was one of those weird glitches that is solved by doing something different. So, I rebooted my VM and logged back into to my normal account with my Mac keyboard powered on. Loath (yes, loath) and behold, it was happening again. What possibly could be causing this and what can I do? (This has not been happening in my other Windows 7 VM.) -- Melab±1 ☎ 14:47, 20 August 2011 (UTC)
Hello, I am interested in sending my old computer system to any African school who would really need another computer.
What programs/organizations/etc. would help me with this? Thanks. -- 70.179.163.168 ( talk) 15:00, 20 August 2011 (UTC)
I am desirous of adding a short phrase at the end of a heading in the style of normal body text. So, pretending that bold italic is the style for a level 3 heading (h3), a normal heading might look like:
This is the heading
I want to add a bit to the heading in normal body text, in a 'span', so the result looks like
This is the heading body text.
What is the name of the default style for body text?
--
SGBailey (
talk) 15:25, 20 August 2011 (UTC)
There've been a good deal of discussions about the use of diacritics where people opposed to the use of diacritics have asserted that not only do many people not know how to type them, but most computers/keyboards (or U.S.-sold computers) cannot type them. I would think that at least through non-default language options, or keystrokes like Alt + ASCII number codes, or if not these special software, this wouldn't be a problem. So, can most computers type diacritics? can that many not at all? — innotata 16:38, 20 August 2011 (UTC)
Many Unix systems have long had a Compose key that allows diacritics to be typed in the windowing system. On Linux systems, the user may have to configure this in the keyboard preferences, since the PC keyboard does not include a Compose key by default, but does have an abundance of recently-added keys (Windows and Menu keys) that are useless in Linux unless put to some particular purpose. — FOo ( talk) 08:47, 21 August 2011 (UTC)
I'm having difficulty getting Excel to differentiate between a period of time versus the time. In short I need to sum a column of time periods such as 12:45:30 (12 hours, 45 minutes, 30 seconds) but Excel insists on handling it as fourteen and a half minutes before 1pm. I need everything to be formatted as hhh:mm:ss. The total of the column would be hundreds of hours and an some individual entries would exceed 24 hours. The answer to a sum of time periods is not "Next Wednesday at 09:45:25" Roger ( talk) 16:44, 20 August 2011 (UTC)
I am trying to download files. Anything larger than 1.2mb seems to get stuck. The problem seems to be caused by a setting which is wrong on my router. What setting might this be? Kittybrewster ☎ 20:33, 20 August 2011 (UTC)