terry: kleine Anderung in equals erste if Bedingung

SparseVector.java

@@ -118,6 +118,12 @@ public class SparseVector {
     //Terry: bool Methode equals: testen, ob other = this (nur vergleichen die Nicht-Null Elemente)
     public boolean equals(SparseVector other) {
 
+        if(this.getLength() != other.getLength()){
+
+            return false;
+
+        }
+
         Node thisnow = this.head;
         Node othernow = other.head;
 
@@ -146,6 +152,7 @@ public class SparseVector {
     // Terry: void add: to add two vectors together and renew (overwrite) the this.vector
     public void add(SparseVector other) {
 
+
         Node thisnow = this.head;
         Node othernow = other.head;
         Node thispre = null;