Create HappyNumber.java

xma8lu · web-flow · commit 6dbb438c72cb · 2020-10-13T20:16:02.000+05:30
diff --git a/HappyNumber.java b/HappyNumber.java
@@ -0,0 +1,27 @@
+public class HappyNumber  
+{     
+    public static int isHappyNumber(int num){  
+        int rem = 0, sum = 0;  
+          
+        while(num > 0){  
+            rem = num%10;  
+            sum = sum + (rem*rem);  
+            num = num/10;  
+        }  
+        return sum;  
+    }  
+      
+    public static void main(String[] args) {  
+        int num = 82;  
+        int result = num;  
+          
+        while(result != 1 && result != 4){  
+            result = isHappyNumber(result);  
+        }  
+          
+        if(result == 1)  
+            System.out.println(num + " is a happy number");  
+        else if(result == 4)  
+            System.out.println(num + " is not a happy number");     
+    }  
+}  
