add: graphs et rushs

1 files changed, 33 insertions, 0 deletions

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);
+    }
+}