Mercurial > dive4elements > river
changeset 662:60f24fca574a
BackJumpCorrector: Simpified array swapping.
flys-artifacts/trunk@2072 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
|---|---|
| date | Tue, 07 Jun 2011 21:01:09 +0000 |
| parents | fdc898a134a7 |
| children | 51172d56e8bc |
| files | flys-artifacts/ChangeLog flys-artifacts/src/main/java/de/intevation/flys/artifacts/math/BackJumpCorrector.java |
| diffstat | 2 files changed, 10 insertions(+), 13 deletions(-) [+] |
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--- a/flys-artifacts/ChangeLog Tue Jun 07 15:05:12 2011 +0000 +++ b/flys-artifacts/ChangeLog Tue Jun 07 21:01:09 2011 +0000 @@ -1,3 +1,8 @@ +2011-06-07 Sascha L. Teichmann <sascha.teichmann@intevation.de> + + * src/main/java/de/intevation/flys/artifacts/math/BackJumpCorrector.java: + Simpified array swapping. + 2011-06-07 Sascha L. Teichmann <sascha.teichmann@intevation.de> * src/main/java/de/intevation/flys/artifacts/WINFOArtifact.java,
--- a/flys-artifacts/src/main/java/de/intevation/flys/artifacts/math/BackJumpCorrector.java Tue Jun 07 15:05:12 2011 +0000 +++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/math/BackJumpCorrector.java Tue Jun 07 21:01:09 2011 +0000 @@ -264,27 +264,19 @@ return array; } - public static final double [] swapClone(double [] array) { - double [] out = new double[array.length]; - int lo = 0; + public static final double [] swapClone(double [] in) { + double [] out = new double[in.length]; - int hi = array.length-1; - while (hi > lo) { - out[lo] = array[hi]; - out[hi] = array[lo]; - ++lo; - --hi; + for (int j = out.length-1, i = 0; j >= 0;) { + out[j--] = in[i++]; } + return out; } public static final double [] sumDiffs(double [] in) { double [] out = new double[in.length]; - if (out.length > 0) { - out[0] = 0d; - } - for (int i = 1; i < out.length; ++i) { out[i] = out[i-1] + Math.abs(in[i-1] - in[i]); }