reorganize dir

Signed-off-by: Mia Steinkirch <mia.steinkirch@gmail.com>

other_resources/Project-Euler/019-counting_sundays.py

@@ -0,0 +1,65 @@
+#!/usr/bin/python3
+# mari von steinkirch @2013
+# steinkirch at gmail
+
+'''
+1 Jan 1900 was a Monday.
+Thirty days has September,
+April, June and November.
+All the rest have thirty-one,
+Saving February alone,
+Which has twenty-eight, rain or shine.
+And on leap years, twenty-nine.
+A leap year occurs on any year evenly divisible by 4, but not on a century unless it is divisible by 400.
+How many Sundays fell on the first of the month during the twentieth century (1 Jan 1901 to 31 Dec 2000)?
+'''
+
+
+def find_if_leap_year(y):
+    if (y%4 == 0 and y%100 != 0) or (y%400 == 0):
+        return True
+    return False
+
+   
+def counting_sundays():
+    ''' define variables '''
+    days_year = 7*31 + 4*30 + 28
+    count_sundays = 0  
+    days_week = 7 
+    dict_week = {0: 'mon', 1:'tue', 2:'wed', 3:'thu', 4:'fri', 5:'sat', 6:'sun'} 
+    
+    
+    ''' with info from 1900 find first day for 1901 '''
+    first_day = days_year%days_week  # not a leap year
+   
+    for y in range (1901, 2001):
+        leap_year = find_if_leap_year(y)
+        days_count = first_day
+               
+        for m in range(1, 13):
+            if days_count%7 == 6:
+                count_sundays += 1             
+            if m == 2:
+                if leap_year:
+                    days_count += 29
+                else: 
+                    days_count += 28
+            elif m == 4 or m == 6 or m == 9 or m == 11:
+                days_count += 30
+            else:
+                days_count += 31                  
+                 
+        if leap_year: first_day = (first_day +2)%days_week
+        else: first_day = (first_day +1)%days_week
+           
+    return count_sundays
+    
+    
+
+def main():
+    print(counting_sundays())
+    print('Tests Passed!')
+                   
+if __name__ == '__main__':
+    main()
+