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How to find the kth largest element in an unsorted array of length n in O(n)?
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This is called finding the k-th order statistic. There's a very simple randomized algorithm (called quickselect) taking O(n) average time, O(n^2) worst case time, and a pretty complicated non-randomized algorithm (called introselect) ...
How to append contents of multiple files into one file
... should be >> right ? and also why is there a newline before all the text in my 0.txt file ?
– Steam
Aug 2 '13 at 0:00
2
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How to list branches that contain a given commit?
...uery git to find out which branches contain a given commit? gitk will usually list the branches, unless there are too many, in which case it just says "many (38)" or something like that. I need to know the full list, or at least whether certain branches contain the commit.
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Get a list of all git commits, including the 'lost' ones
...of a branch, it's rather like finding a needle in a haystack. You can find all the commits that don't appear to be referenced any more- git fsck --unreachable will do this for you- but that will include commits that you threw away after a git commit --amend, old commits on branches that you rebased ...
How to initialize a two-dimensional array in Python?
...beginning python and I'm trying to use a two-dimensional list, that I initially fill up with the same variable in every place. I came up with this:
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How to print time in format: 2009‐08‐10 18:17:54.811
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Superb answer. I could do all sorts of things in PHP, but knew it was all there already in C. THanks.
– Vijay Kumar Kanta
Jan 23 '14 at 12:43
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Differences between Perl and PHP [closed]
...ype, of which Perl has three, and the type specifier is part of the name (called a "sigil"), so $foo is a different variable than @foo or %foo.
(related to the previous point) Perl has separate symbol table entries for scalars, arrays, hashes, code, file/directory handles and formats. Each has its o...
Hosting ASP.NET in IIS7 gives Access is denied?
...e front page where they distribute that IIS!
– c00000fd
Aug 3 '13 at 2:52
36
Site > Authentica...
Is it possible for git-merge to ignore line-ending differences?
...cursive --strategy-option=renormalize
This works much better than ignore-all-space.
Before Git 2.29 (Q4 2020), All "mergy" operations that internally use the merge-recursive machinery should honor the merge.renormalize configuration, but many of them didn't.
See commit 00906d6, commit 8d55225, co...
How can you find and replace text in a file using the Windows command-line environment?
... comes with PowerShell built-in. Here is the script I used to find/replace all instances of text in a file:
powershell -Command "(gc myFile.txt) -replace 'foo', 'bar' | Out-File -encoding ASCII myFile.txt"
To explain it:
powershell starts up powershell.exe, which is included in Windows 7
-Command ...