QR decomposition: Difference between revisions

Content added Content deleted

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@@ Line 1,935: / 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) {
-        Matrix matrix = new Matrix(new double[][] {
+        var matrix = new Matrix(new double[][] {
-            { 12, -51,   4 },
+            {12, -51,   4},
-            {  6, 167, -68 },
+            { 6, 167, -68},
-            { -4,  24, -41 },
+            {-4,  24, -41},
         });
-        QRDecomposition d = new QRDecomposition(matrix);
+        var qr = new QRDecomposition(matrix);
-        System.out.print(toString(d.getQ()));
+        qr.getQ().print(10, 4);
-        System.out.print(toString(d.getR()));
+        qr.getR().print(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
- -0.857143  0.394286 -0.331429
+.2857     -0.1714     -0.9429
- -0.428571 -0.902857  0.034286
-.285714 -0.171429 -0.942857
- -14.000000 -21.000000 14.000000
+    -14.0000    -21.0000     14.0000
-.000000 -175.000000 70.000000
+.0000   -175.0000     70.0000
-.000000  0.000000 35.000000
+.0000      0.0000     35.0000</pre>
-</pre>
 =={{header|Julia}}==