zad2/Main.java

@@ -14,7 +14,9 @@ public class Main {
         String multiple = Arrays.toString(PolynomialOperations.multiple(polyF, polyG, modulo));
         int[] divisionArray = PolynomialOperations.divide(polyF, polyG, modulo);
         String division;
-        if (divisionArray.length == 0)
+        if(divisionArray == null)
+            division = "DivisionError";
+        else if (divisionArray.length == 0)
             division = "[0]";
         else
             division = Arrays.toString(divisionArray);
@@ -22,7 +24,6 @@ public class Main {
         if (nwd.equals("null"))
             nwd = "DivisionError";
 
-
         String outputString = "[" + multiple + ", " + division + ", " + nwd + "]";
         System.out.println(outputString);
     }

zad2/PolynomialOperations.java

@@ -55,7 +55,7 @@ public class PolynomialOperations {
 
     public static int[] divide(int[] n, int[] d, int mod) {
         if (n.length < d.length) {
-            throw new IllegalArgumentException("Numerator and denominator vectors must have the same size");
+            return null;
         }
         int nd = n.length - 1;
         int dd = d.length - 1;
@@ -79,7 +79,11 @@ public class PolynomialOperations {
             return null;
 
         while (b.length != 0) {
-            int[] c = divide(a, b, mod);
+            int[] c;
+            if (a.length >= b.length)
+                c = divide(a, b, mod);
+            else
+                c = divide(b, a, mod);
             a = b;
             b = c;
         }