Re^5: Split range 0 to M into N non-overlapping (roughly equal) ranges.

I expect the last index to be 19.

Why? The range is 0 .. 20 inclusive:

[ 6:17:58.02] C:\test>ranges -M=20 -N=3
 0 : from       0 to       6 (      7)
 1 : from       7 to      13 (      7)
 2 : from      14 to      20 (      7)
========================================
                                   21

[ 7:10:34.53] C:\test>ranges -M=20 -N=2
 0 : from       0 to       9 (     10)
 1 : from      10 to      20 (     11)
========================================
                                   21

[ 7:11:36.69] C:\test>ranges -M=20 -N=1
 0 : from       0 to      20 (     21)
========================================
                                   21
[download]

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.

"Science is about questioning the status quo. Questioning authority".

In the absence of evidence, opinion is indistinguishable from prejudice.

Comment on Re^5: Split range 0 to M into N non-overlapping (roughly equal) ranges. Download Code

Replies are listed 'Best First'.
Re^6: Split range 0 to M into N non-overlapping (roughly equal) ranges. by repellent (Priest) on Mar 13, 2011 at 07:32 UTC
But this isn't 0 .. 14 inclusive: `[ 6:16:11.35] C:\test>ranges -M=14 -N=11 0 : from 0 to 0 ( 1) 1 : from 1 to 1 ( 1) 2 : from 2 to 3 ( 2) 3 : from 4 to 4 ( 1) 4 : from 5 to 5 ( 1) 5 : from 6 to 7 ( 2) 6 : from 8 to 8 ( 1) 7 : from 9 to 9 ( 1) 8 : from 10 to 11 ( 2) 9 : from 12 to 12 ( 1) 10 : from 13 to 13 ( 1) ======================================== 14` [download] Based on your previous results, I expect non-inclusive every time. If my expectation is wrong, then why is the result above non-inclusive (i.e. does not end with index 14)? (I'm not adamant on my expectation of non-inclusiveness. I just expect consistent behavior. :-)	[reply] [d/l]
Re^7: Split range 0 to M into N non-overlapping (roughly equal) ranges. by BrowserUk (Patriarch) on Mar 13, 2011 at 07:51 UTC
Ah! Now I see the problem. (Phraseology lacking). Preliminary response: `my $STEP = ( $M + 1.5 ) / $N;` [download] Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". In the absence of evidence, opinion is indistinguishable from prejudice.	[reply] [d/l]