Thread: Simple Function

  1. 02-02-2012 #1
    DeanWinchester
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    Simple Function

    Hey guys,
    I'm doing some exercises for Algorithms Complexity and thing is I'm stuck.

    I can't find to understand what this is supposed to do :

    Code:
    s = sum(K=0 ... N-1) a[k]
    Any idea ?

    Thanks.
  2. 02-02-2012 #2
    laserlight
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    It looks like an attempt to render summation notation, i.e., sum of a[k] from k=0 to k=n-1. Translating it to C would likely involve a for loop.
    Quote Originally Posted by Bjarne Stroustrup (2000-10-14)
    I get maybe two dozen requests for help with some sort of programming or design problem every day. Most have more sense than to send me hundreds of lines of code. If they do, I ask them to find the smallest example that exhibits the problem and send me that. Mostly, they then find the error themselves. "Finding the smallest program that demonstrates the error" is a powerful debugging tool.
    Look up a C++ Reference and learn How To Ask Questions The Smart Way
  3. 02-02-2012 #3
    DeanWinchester
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    It it inside a while loop
  4. 02-02-2012 #4
    laserlight
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    Ah well, it amounts to the same thing, though I still think that a for loop would be more idiomatic when converting from summation notation.
    Quote Originally Posted by Bjarne Stroustrup (2000-10-14)
    I get maybe two dozen requests for help with some sort of programming or design problem every day. Most have more sense than to send me hundreds of lines of code. If they do, I ask them to find the smallest example that exhibits the problem and send me that. Mostly, they then find the error themselves. "Finding the smallest program that demonstrates the error" is a powerful debugging tool.
    Look up a C++ Reference and learn How To Ask Questions The Smart Way
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