sum the odd digits

1 files changed, 11 insertions, 1 deletions

diff --git a/src/Q3/CreditCard.java b/src/Q3/CreditCard.java
index e6dc0f8..d8a5371 100644
--- a/src/Q3/CreditCard.java
+++ b/src/Q3/CreditCard.java
@@ -12,6 +12,16 @@ public class CreditCard {
   public CreditCard(String num) {
     this.ccNumber = num;
     this.company = this.identifyCompany(num);
+    String reversed = new StringBuilder(num).reverse().toString();
+    for (int i = 0; i < reversed.length(); i++) {
+      if (!Character.isDigit(reversed.charAt(i))) break;
+
+      int digit = Character.getNumericValue(reversed.charAt(i));
+      if ((i + 1) % 2 == 0) {
+      } else {
+        this.oddSum += digit;
+      }
+    }
   }
 
   public int getEvenSum() {
@@ -35,7 +45,7 @@ public class CreditCard {
   }
 
   public boolean isValid() {
-    return this.validateCompany() && this.validateLength();
+    return this.validateCompany() && this.validateLength() && this.validateNumber();
   }
 
   public boolean isDivisibleBy10() {