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rnielsen



Joined: 23 Sep 2003
Posts: 852
Location: Utah

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Sorting question
PostPosted: Wed Mar 07, 2007 11:28 pm     Reply with quote

Greetings,

I have need to sort some data and need your input.

I've been using my own home-brewed code to sort a bit of data. I have declared variables:

int16 time[60];
int8 best[60];

The data in time[] needs to remain intact and unsorted. The variable, best[] is used to track which time[] variable has the lowest value. If time[25] has the lowest value then best[0] will have the value of 25. If time[2] is the next lowest then best[1] will have the value of 2 and so on. I've looked at qsort() but I'm not sure if this will end up sorting the original data.

So far I've only needed to sort the lowest six places (best[] used to only have six places) but now I need to sort the entire array. Time[] could have values inserted into the first three locations and up to time[60] and I need to sort up to the last location that has been saved. Another variable tracks how many values have been saved.

I know this is a good place to ask since there are many intelligent minds that frequent here.

Ronald
Neutone



Joined: 08 Sep 2003
Posts: 839
Location: Houston

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PostPosted: Thu Mar 08, 2007 11:24 am     Reply with quote

Maybe you could do this. Identify how many values in the time[] array are less than time[x].

If y are less then best[y] =x;

etc...

The only problem is what you do to handle time[] values that are equal.

This would be 60 loops with 59 compares. I think this would compile to be minimal amount of code but run time could probably be improved.
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