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QR decomposition: Difference between revisions

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QR decomposition (view source)

Revision as of 20:47, 17 February 2021

256 bytes removed ,  3 years ago
m
→‎{{header|Java}}: a bit simpler
m (→‎{{header|Java}}: a bit simpler)
Line 1,935:
<lang java>import Jama.Matrix;
import Jama.QRDecomposition;
 
import java.io.StringWriter;
import java.io.PrintWriter;
 
public class Decompose {
public static void main(String[] args) {
Matrixvar matrix = new Matrix(new double[][] {
{ 12, -51, 4 },
{ 6, 167, -68 },
{ -4, 24, -41 },
});
 
QRDecompositionvar dqr = new QRDecomposition(matrix);
Systemqr.outgetQ().print(toString(d.getQ())10, 4);
Systemqr.outgetR().print(toString(d.getR())10, 4);
}
 
public static String toString(Matrix m) {
StringWriter sw = new StringWriter();
m.print(new PrintWriter(sw, true), 8, 6);
return sw.toString();
}
}</lang>
 
{{out}}
<pre> -0.8571 0.3943 -0.3314
<pre>
-0.4286 -0.9029 0.0343
 
- 0.8571432857 -0.3942861714 -0.3314299429
-0.428571 -0.902857 0.034286
0.285714 -0.171429 -0.942857
 
 
-14.0000000000 -21.0000000000 14.0000000000
0.0000000000 -175.0000000000 70.0000000000
0.0000000000 0.0000000000 35.0000000000</pre>
</pre>
 
=={{header|Julia}}==
Bastet
175

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