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Add a linear system solver (#6196)

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David Kong
2025-03-14 17:57:55 -04:00
committed by GitHub
parent 769e4975f6
commit 5285a3d7aa
2 changed files with 92 additions and 0 deletions
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src/test/java/com/thealgorithms/matrix/SolveSystemTest.java Normal file
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package com.thealgorithms.matrix;
import static org.junit.jupiter.api.Assertions.assertArrayEquals;
import java.util.stream.Stream;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.Arguments;
import org.junit.jupiter.params.provider.MethodSource;
class SolveSystemTest {
@ParameterizedTest
@MethodSource({"matrixGenerator"})
void solveSystem(double[][] matrix, double[] constants, double[] solution) {
double[] expected = SolveSystem.solveSystem(matrix, constants);
assertArrayEquals(expected, solution, 1.0E-10, "Solution does not match expected");
}
private static Stream<Arguments> matrixGenerator() {
return Stream.of(Arguments.of(new double[][] {{-5, 8, -4}, {0, 6, 3}, {0, 0, -4}}, new double[] {38, -9, 20}, new double[] {-2, 1, -5}), Arguments.of(new double[][] {{-2, -1, -1}, {3, 4, 1}, {3, 6, 5}}, new double[] {-11, 19, 43}, new double[] {2, 2, 5}));
}
}