Python: clock

python/clock/clock.py

@@ -0,0 +1,24 @@
+HOURS_IN_DAY = 24
+MINUTES_IN_HOUR = 60
+MINUTES_IN_DAY = HOURS_IN_DAY*MINUTES_IN_HOUR
+
+
+class Clock:
+    def __init__(self, hour=0, minute=0):
+        self.minutes = (MINUTES_IN_HOUR*hour + minute) % MINUTES_IN_DAY
+
+    def __repr__(self):
+        hours = self.minutes // MINUTES_IN_HOUR
+        minutes = self.minutes % MINUTES_IN_HOUR
+        return f'{hours:02}:{minutes:02}'
+
+    def __eq__(self, other):
+        return self.minutes == other.minutes
+
+    def __add__(self, minutes):
+        clock = Clock()
+        clock.minutes = (self.minutes + minutes) % MINUTES_IN_DAY
+        return clock
+
+    def __sub__(self, minutes):
+        return self.__add__(-minutes)