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Re: Algorithm for finding Median: Got one or can you dissect this?
From: |
Marcus G. Daniels |
Subject: |
Re: Algorithm for finding Median: Got one or can you dissect this? |
Date: |
22 Mar 1999 13:32:58 -0800 |
>>>>> "PJ" == Paul E Johnson <address@hidden> writes:
PJ> If you have a nice, quick algorithm to find medians, please give it to
PJ> me, because I've tried pretty hard with this one.
Fundamentally, it should be possible to QSort an array copy of
a collection an then do:
lhs = (n - 1) / 2;
rhs = n / 2;
if (n == 0)
return 0.0;
if (lhs == rhs)
median = (lhs == rhs) ? sorted[lhs] : (sorted[lhs] + sorted[rhs]) / 2.0;
Sorry, SwarmFest pressures prevent me from looking at your test case now.
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