@Test
public void testMultiplyRandom() {
Random r = new Random();
DOK2Dint dok = new DOK2Dint(10 + r.nextInt(10), 10 + r.nextInt(10));
// random matrix
for (int l = 0; l < dok.nlines(); l++) {
for (int c = 0; c < dok.ncols(); c++) {
// 50% chance of random element
if (r.nextBoolean()) {
dok.set(l, c, r.nextInt());
}
}
}
DOK1Dint vec = new DOK1Dint(dok.ncols());
// random vec
for (int l = 0; l < vec.nlines(); l++) {
if (r.nextBoolean()) {
vec.set(l, r.nextInt());
}
}
// expected result
DOK1Dint expected = dok.multiply(vec);
assertEquals(expected, new CSC2Dint(dok).multiply(vec));
}
@Test
public void testGet() {
assertEquals(1, m.get(1, 1), 0);
DOK2Dint dok = new DOK2Dint(10, 10);
// first line == [0 1 2 3 4 5 ... ]
for (int c = 0; c < dok.ncols(); c++) {
dok.set(0, c, c);
}
// first col == [0 1.5 2.5 3.5 ...]
for (int l = 1; l < dok.nlines(); l++) {
dok.set(l, 0, (int) (l + 0.5));
}
Matrix2Dint m = new CSC2Dint(dok);
for (int l = 0; l < m.nlines(); l++) {
for (int c = 0; c < m.ncols(); c++) {
// print line and column number on error
assertArrayEquals(
new Integer[] {(int) l, (int) c, dok.get(l, c)},
new Integer[] {(int) l, (int) c, m.get(l, c)});
}
}
}