ajout des fonction slice -to -from

src/main/java/ch/hepia/numeric/Vector.java

@@ -77,15 +77,26 @@ final public class Vector {
     }
 
     public Vector sliceFrom(int i) {
-        throw new UnsupportedOperationException("This feature isn't implemented yet");
+        return slice (i,this.len());
     }
 
     public Vector sliceTo(int i) {
-        throw new UnsupportedOperationException("This feature isn't implemented yet");
+        return slice (0,i);
     }
 
     public Vector slice(int from, int to) {
-        throw new UnsupportedOperationException("This feature isn't implemented yet");
+        Vector v =new Vector();
+        if (from>=to){
+          return v;
+        }
+        else{
+          for (double d : this.lstVector.subList(from,to))
+          {
+            v.lstVector.add(d);
+          }
+        return v;
+        }
+
     }
 
     public Vector removed(int i) {

src/test/java/ch/hepia/numeric/AppTest.java

@@ -74,7 +74,7 @@ class VectorTest {
         assertEquals(v.toString(), "Vector[1.0, 2.0, 3.0]");
         assertEquals(v.t().toString(), "Transposed[1.0, 2.0, 3.0]");
     }
-/*
+
     @Test
     void vectorSlice() {
         Vector v = Vector.of(1.0, 2.0, 3.0, 4.0, 5.0);
@@ -83,8 +83,9 @@ class VectorTest {
         assertEquals(v.slice(2,4), Vector.of(3.0, 4.0));
         assertEquals(v.slice(4,4), Vector.empty());
         assertEquals(v.slice(4,2), Vector.empty());
-        assertEquals(v.removed(2), Vector.of(1.0, 2.0, 4.0, 5.0));
+     //   assertEquals(v.removed(2), Vector.of(1.0, 2.0, 4.0, 5.0));
     }
+    /*
     @Test
     void vectorConcat() {
         Vector v1 = Vector.of(1.0, 2.0, 3.0);