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Generating all permutations of a given string

What is an elegant way to find all the permutations of a string. E.g. permutation for ba , would be ba and ab , but what about longer string such as abcdefgh ? Is there any Java implementation example? ...
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Simplest way to do a fire and forget method in c# 4.0

I really like this question: 4 Answers 4 ...
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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 get first three characters of an NSString?

...oIndex:3]; Be sure your string has atleast 3 ch.. o.e. it will crash the app. Here are some other links to check NSsting operations... Link1 Link2 Apple Link share | improve this answer ...
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Does Git warn me if a shorthand commit ID can refer to 2 different commits?

...en testing this, you need a minimum of 4-digit SHA1, because of int minimum_abbrev = 4 in environment.c. (Thanks @devnull for pointing that out!) share | improve this answer | ...
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Need to ZIP an entire directory using Node.js

... How do I include all files and directories, recursively (also the hidden files/directories)? – Ionică Bizău Jan 12 '15 at 10:21 ...
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Removing path and extension from filename in powershell

...ng results. strTestPath = C:\Users\DAG\Documents\Articles_2018\NTFS_File_Times_in_CMD\PathStringInfo.ps1 GetDirectoryName = C:\Users\DAG\Documents\Articles_2018\NTFS_File_Times_in_CMD GetFileName = PathStringInfo.ps1 GetExtension = .ps1 Get...
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How do you check if a JavaScript Object is a DOM Object?

...exception is thrown and we end up here. Testing some //properties that all elements have (works on IE7) return (typeof obj==="object") && (obj.nodeType===1) && (typeof obj.style === "object") && (typeof obj.ownerDocument ==="object"); } } It's part of ...
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How to determine the longest increasing subsequence using dynamic programming?

...ence) which is ending at element with index i. To compute DP[i] we look at all indices j < i and check both if DP[j] + 1 > DP[i] and array[j] < array[i] (we want it to be increasing). If this is true we can update the current optimum for DP[i]. To find the global optimum for the array you c...
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Authoritative position of duplicate HTTP GET query keys

...t you like. Typical approaches include: first-given, last-given, array-of-all, string-join-with-comma-of-all. Suppose the raw request is: GET /blog/posts?tag=ruby&tag=rails HTTP/1.1 Host: example.com Then there are various options for what request.query['tag'] should yield, depending on the...