Done this took a long time.......

.gitignore

@@ -1,2 +1,4 @@
 /HW1.zip
 /HW1.pdf
+*.7z
+*.class

prog/IncDate.java

@@ -19,5 +19,33 @@ public class IncDate extends Date
     public void addDays(int numDays)
     {
         // TODO: implement this method
+        int days_to_add = numDays;
+        int[] MONTHS = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
+        boolean is_leap = (m_year % 400 == 0) || ((m_year % 4 == 0) && !(m_year % 100 == 0));
+
+        for (int current_month = 0; current_month < m_month-1; current_month ++)
+            days_to_add += MONTHS[current_month];
+
+        if ((m_month > 2) && is_leap)
+            days_to_add += 1;
+        days_to_add += m_day-1;
+        m_month = 1;
+        m_day = 1;
+        while (days_to_add > 365) {
+            is_leap = (m_year % 400 == 0) || ((m_year % 4 == 0) && !(m_year % 100 == 0));
+            if (is_leap)
+                days_to_add -= 1;
+            days_to_add -= 365;
+            m_year += 1;
+        }
+	is_leap = (m_year % 400 == 0) || ((m_year % 4 == 0) && !(m_year % 100 == 0));
+	if (is_leap)
+            MONTHS[1] +=1;
+
+        while (days_to_add >= MONTHS[m_month-1]) {
+            days_to_add -= MONTHS[m_month-1];
+            m_month += 1;
+        }
+        m_day=days_to_add+1;
     }
 }