substract polynomials

Main.java

@@ -134,5 +134,34 @@ public class Main {
 		}
 		return result;
 	
-	}	
+	}
+
+	public static LinkedList<Integer> substractPolynomials(LinkedList<Integer> p1, LinkedList<Integer> p2){
+		
+		LinkedList<Integer> result = new LinkedList<Integer>();
+		LinkedList<Integer> p2Copy = new LinkedList<Integer>();
+		
+		
+		for(int i=0; i<p2.size(); i++) {
+			p2Copy.add(p2.get(i));
+		}
+		
+		while(!p2Copy.isEmpty()) {
+			result.add(p1.poll() - p2Copy.poll());
+		}
+		
+		while(!p1.isEmpty()) {
+			result.add(p1.poll());
+		}
+		
+		while(result.getLast() == 0) {
+			if(result.size()>1) {
+				result.removeLast();
+			}
+			else break;
+		}
+		
+		return result;
+	}
+		
 }