What is meant by this code line? (Code Hunt)

Question

I tried to solve Level 03.03 in Code Hunt. But, as I found no solution, I got this code line from the internet.

public static int Puzzle(int lowerBound, int upperBound)
{
    return lowerBound == upperBound ? upperBound : (upperBound * Puzzle(lowerBound,upperBound - 1));
}

The solutions are:

lowerBound      upperBound      EXPECTED RESULT
1               8               40320
15              24              244963328
16              17              272

Does anyone has an idea for, what is meant with this code? I just don't get it.

It's a `conditional operator`: http://msdn.microsoft.com/en-us/library/ty67wk28.aspx — w.b, Sep 28 '14 at 13:13
http://stackoverflow.com/questions/6957214/question-mark-and-colon-mean-in-statement-what-does-it-mean — artm, Sep 28 '14 at 13:13
What part of the code is it that you don't understand? Is it the conditional operator or is it the use of recursion? — jpw, Sep 28 '14 at 13:15
You're right, but I haven't found anything. @jpw Thanks for the answers, it was the conditional operator. — Matt126, Sep 28 '14 at 13:26

score 2 · Accepted Answer · answered Sep 28 '14 at 13:12

2

if(lowerBound == upperBound)
{
     return upperBound;
}
else
{
    return (upperBound * Puzzle(lowerBound,upperBound - 1));
}

You can read about condition operator here: http://msdn.microsoft.com/en-us/library/ty67wk28.aspx

answered Sep 28 '14 at 13:12

mybirthname

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What is meant by this code line? (Code Hunt)

1 Answers1