Compléter la classe ConstantMatrixInitializer

src/main/java/matrix/ConstantMatrixInitializer.java

 package matrix;
 
 public class ConstantMatrixInitializer<T> implements MatrixInitializer<T> {
-
-  // TODO: add instance variables
+  private final T constant ;
 
   public ConstantMatrixInitializer(T constant) {
-    // TODO
-  }
+    this.constant = constant;  }
 
     @Override
     public T initialValueAt(Coordinate coordinate) {