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Determining complexity for recursive functions (Big O notation)

I have a Computer Science Midterm tomorrow and I need help determining the complexity of these recursive functions. I know how to solve simple cases, but I am still trying to learn how to solve these harder cases. These were just a few of the example problems that I could not figure out. Any help wo...
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gcc makefile error: “No rule to make target …”

I'm trying to use GCC (linux) with a makefile to compile my project. 17 Answers 17 ...
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How can I view all historical changes to a file in SVN

I know that I can svn diff -r a:b repo to view the changes between the two specified revisions. What I'd like is a diff for every revision that changed the file. Is such a command available? ...
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What is the use for Task.FromResult in C#

...lel Library ), the Task class represents an ongoing work that produces a value of type T. 6 Answers ...
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Calling shell functions with xargs

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Parallel.ForEach vs Task.Factory.StartNew

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Get Android .apk file VersionName or VersionCode WITHOUT installing apk

How can I get programmatically get the version code or version name of my apk from the AndroidManifest.xml file after downloading it and without installing it. ...
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How can I render a list select box (dropdown) with bootstrap?

... drop down list select box? That is, where the drop down box is a list of values and if selected populate the contents of the list box? ...
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Why can't I call read() twice on an open file?

For an exercise I'm doing, I'm trying to read the contents of a given file twice using the read() method. Strangely, when I call it the second time, it doesn't seem to return the file content as a string? ...
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Big-O for Eight Year Olds? [duplicate]

I'm asking more about what this means to my code. I understand the concepts mathematically, I just have a hard time wrapping my head around what they mean conceptually. For example, if one were to perform an O(1) operation on a data structure, I understand that the number of operations it has to p...