Update a test case

Negetive numbers are not valid.
wise-X · Aug 17, 2015 · e61edd1 · e61edd1
1 parent 5afa053
commit e61edd1
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Showing 2 changed files with 8 additions and 2 deletions.
diff --git a/10_Harshad_Number/Java/darubramha89/HarshadNumbers.java b/10_Harshad_Number/Java/darubramha89/HarshadNumbers.java
@@ -4,7 +4,12 @@ public class HarshadNumbers {
 
 	public static boolean isHarshad(int input)
 	{
-		if(input%decimalSum(input) == 0)
+		if(input <= 0)
+        {
+            System.out.println(input+" is invalid, enter a non-negative/non-zero number");
+            return false;
+        }
+        if(input%decimalSum(input) == 0)
 		{
 			System.out.println(input+" is Harshad Number");
 			return true;

diff --git a/10_Harshad_Number/Java/darubramha89/HarshadNumbers_test.java b/10_Harshad_Number/Java/darubramha89/HarshadNumbers_test.java
@@ -9,7 +9,7 @@ public static void main(String[] args) {
 		HarshadNumbers.isHarshad(111);
 		HarshadNumbers.isHarshad(201);
 		HarshadNumbers.isHarshad(921341);
-
+		HarshadNumbers.isHarshad(-11);
 		/** Output
 			12 is Harshad Number
 			11 is not a Harshad Number
@@ -20,3 +20,4 @@ public static void main(String[] args) {
 	}
 
 }
+