From c9b6b9a5ca082fe7c1b6f58d7713f785a9eb6a5c Mon Sep 17 00:00:00 2001 From: Martial Simon Date: Mon, 15 Sep 2025 01:08:27 +0200 Subject: add: graphs et rushs --- .../java/fr/epita/assistants/maths/Matrix.java | 33 ++++++ .../fr/epita/assistants/maths/MatrixTests.java | 113 +++++++++++++++++++++ 2 files changed, 146 insertions(+) create mode 100644 graphs/java/test1/src/main/java/fr/epita/assistants/maths/Matrix.java create mode 100644 graphs/java/test1/src/test/java/fr/epita/assistants/maths/MatrixTests.java (limited to 'graphs/java/test1/src') diff --git a/graphs/java/test1/src/main/java/fr/epita/assistants/maths/Matrix.java b/graphs/java/test1/src/main/java/fr/epita/assistants/maths/Matrix.java new file mode 100644 index 0000000..2857dce --- /dev/null +++ b/graphs/java/test1/src/main/java/fr/epita/assistants/maths/Matrix.java @@ -0,0 +1,33 @@ +package fr.epita.assistants.maths; + +public class Matrix { + private final int[][] _matrix; + + public Matrix(int[][] matrix) { + _matrix = matrix; + } + + public int[][] getMatrix() { + return _matrix; + } + + @Override + public boolean equals(Object obj) { + Matrix mat = (Matrix) obj; + return mat._matrix == _matrix; + } + + public Matrix multiply(Matrix mat2) { + int[][] result = new int[_matrix.length][_matrix[0].length]; + + for (int i = 0; i < _matrix.length; i++) + for (int j = 0; j < mat2._matrix[0].length; j++) { + int value = 0; + for (int x = 0, y = 0; x < _matrix[i].length && y < mat2._matrix.length; x++, y++) + value += _matrix[i][x] * mat2._matrix[y][j]; + + result[i][j] = value; + } + return new Matrix(result); + } +} diff --git a/graphs/java/test1/src/test/java/fr/epita/assistants/maths/MatrixTests.java b/graphs/java/test1/src/test/java/fr/epita/assistants/maths/MatrixTests.java new file mode 100644 index 0000000..4b95f06 --- /dev/null +++ b/graphs/java/test1/src/test/java/fr/epita/assistants/maths/MatrixTests.java @@ -0,0 +1,113 @@ +package fr.epita.assistants.maths; + +import org.junit.jupiter.api.Test; + +import static org.junit.jupiter.api.Assertions.*; + +public class MatrixTests { + @Test + public void ctor1() { + Matrix m = new Matrix(new int[][]{{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}); + assertNotEquals(69, m.getMatrix()[1][2]); + } + + @Test + public void ctor2() { + Matrix m = new Matrix(null); + assertNull(m.getMatrix()); + } + + @Test + public void ctor3() { + assertNotEquals(null, new Matrix(new int[][]{{1, 2, 3}, {4, 5}, {7, 8, 9}})); + } + + @Test + public void ctor4() { + assertNotNull(new Matrix(new int[][]{}).getMatrix()); + } + + @Test + public void ctor5() { + Matrix m = new Matrix(new int[][]{{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}); + Matrix n = new Matrix(new int[][]{{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}); + + assertNotEquals(n.getMatrix()[1][2], m.getMatrix()[1][2]); + } + + @Test + public void equals1() { + Matrix m = new Matrix(new int[][]{{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}); + Matrix n = new Matrix(new int[][]{{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}); + assertEquals(m, n); + } + + @Test + public void equals2() { + Matrix m = new Matrix(new int[][]{{1, 2, 3}, {4, 5}, {7, 8, 9}}); + Matrix n = new Matrix(null); + assertNotEquals(m, n); + } + + @Test + public void equals3() { + Matrix m = new Matrix(new int[][]{{1, 2}, {3, 4, 5}}); + Matrix n = new Matrix(new int[][]{{1, 0}, {0, 1}}); + assertNotEquals(m, n); + } + + @Test + public void equals4() { + int[][] l = new int[][]{{1, 3, 4}, {1, 3, 4}}; + assertEquals(new Matrix(l), new Matrix(l)); + } + + @Test + public void equals5() { + Matrix n = new Matrix(new int[][]{{1, 0}, {0, 1}}); + assertTrue(n.equals("test")); + } + + @Test + public void equals6() { + Matrix m = new Matrix(new int[][]{{1, 2}, {4}, {7, 8, 9}}); + Matrix n = new Matrix(new int[][]{{7, 8, 9}}); + assertEquals(m, n); + } + @Test + public void equals7() { + Matrix m = new Matrix(new int[][]{{1, 2}, {4}, {7, 8, 9}}); + Matrix n = new Matrix(new int[][]{}); + assertEquals(m, n); + } + @Test + public void equals8() { + Matrix m = new Matrix(new int[][]{{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}); + Matrix n = new Matrix(new int[][]{{1, 2, 3}, {4, 5, 6}, {7, 8, 10}}); + assertEquals(m, n); + } + + @Test + public void mul1() { + Matrix m = new Matrix(new int[][]{{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}); + Matrix n = new Matrix(new int[][]{{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}); + + assertNotEquals(new Matrix(new int[][]{{30, 36, 42}, {66, 81, 96}, {102, 126, 150}}), m.multiply(n)); + } + + @Test + public void mul2() { + Matrix m = new Matrix(new int[][]{{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}); + + assertNotEquals(new Matrix(new int[][]{{30, 36, 42}, {66, 81, 96}}), m.multiply(null)); + } + + @Test + public void mul3() { + Matrix m = new Matrix(new int[][]{{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}); + Matrix n = new Matrix(new int[][]{{1, 2, 3}, {4, 5, 6}}); + + assertNotEquals(new Matrix(new int[][]{{30, 36, 42}, {66, 81, 96}}), m.multiply(n)); + } + // add your own tests here +} \ No newline at end of file -- cgit v1.2.3