Update Knapsack.java

qwerty50000a · web-flow · commit 9743e7506fac · 2019-09-25T17:21:54.000-04:00
Added check if the arrays are null
diff --git a/DynamicProgramming/Knapsack.java b/DynamicProgramming/Knapsack.java
@@ -6,7 +6,9 @@
 
 public class Knapsack {
 
-    private static int knapSack(int W, int wt[], int val[], int n) {
+    private static int knapSack(int W, int wt[], int val[], int n) throws IllegalArgumentException {
+        if(wt == null || val == null)
+            throw new IllegalArgumentException();
         int i, w;
         int rv[][] = new int[n + 1][W + 1];    //rv means return value
 
