Is it possible to do this with only 2 variables?
Thanks
This is a discussion on Program to find largest of 3 numbers within the C Programming forums, part of the General Programming Boards category; Is it possible to do this with only 2 variables? Thanks...
Is it possible to do this with only 2 variables?
Thanks
Why don't you try to do it with only two variables, and see if you can?
Right 98% of the time, and don't care about the other 3%.
I've come to the conclusion that it's not possible as you are comparing three numbers.
Perhaps the challenge was 2 comparisons (which is possible), not 2 variables (which isn't).
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Apparently you can use arrays.
Right 98% of the time, and don't care about the other 3%.
Or, if you count the three input values in an array as one variable, the trivial solution uses exactly two variables and two comparisons.
Edit: Since qny posted one below, I'll post this one too.
and for any number of values using just three variables and (numbers - 1) comparisons (of numbers; (2*numbers - 1) if you count the loop condition comparison too):Code:double maximum_of_three(const double *numbers) { double max = *numbers; if (*(++numbers) > max) max = *numbers; if (*(++numbers) > max) max = *numbers; return max; }
Code:double maximum(const double *numbers, size_t count) { double max = *numbers; while (count-- > 1) if (*(++numbers) > max) max = *numbers; return max; }
Last edited by Nominal Animal; 10-10-2012 at 08:57 AM.