Time

Sloth’s Meal Time

Challenge Difficulty: Medium | Estimated completion time: ~20 minutes

Sloth is a very habitual person. He eats breakfast at 7:00 a.m. each morning, lunch at 12:00 p.m. and dinner at 7:00 p.m. in the evening.

Create a function that takes in the current time as a string and determines the duration of time before Sloth’s next meal.

Represent this as an array with the first and second elements representing hours and minutes, respectively.

Examples

timeToEat("2:00 p.m.")
#5 hours until the next meal, dinner
output = [5, 0]
 
timeToEat("5:50 a.m.")
# 1 hour and 10 minutes until the next meal, breakfast
output = [1, 10]

Solution

Python

def timeToEat(current_time: str) -> list[int]: """ Calculate time until Sloth's next meal. Sloth eats at: 7:00 AM (breakfast), 12:00 PM (lunch), 7:00 PM (dinner). Args: current_time: Current time string in format like "2:00 p.m." or "5:50 a.m." Returns: List with [hours, minutes] until the next meal. Examples: >>> timeToEat("2:00 p.m.") [5, 0] >>> timeToEat("5:50 a.m.") [1, 10] """ # Parse the current time time_part = current_time.replace(".", "").lower() is_pm = "pm" in time_part time_digits = time_part.replace(" am", "").replace(" pm", "") hour, minute = map(int, time_digits.split(":")) # Convert to 24-hour format if is_pm and hour != 12: hour += 12 elif not is_pm and hour == 12: hour = 0 # Convert to minutes since midnight current_minutes = hour * 60 + minute # Meal times in minutes since midnight breakfast_time = 7 * 60 # 7:00 AM lunch_time = 12 * 60 # 12:00 PM dinner_time = 19 * 60 # 7:00 PM next_day_breakfast = 24 * 60 + breakfast_time # Next day 7:00 AM # Find the next meal meal_times = [breakfast_time, lunch_time, dinner_time, next_day_breakfast] for meal_time in meal_times: if current_minutes < meal_time: time_difference = meal_time - current_minutes hours_until = time_difference // 60 minutes_until = time_difference % 60 return [hours_until, minutes_until] return [0, 0] if __name__ <span class="text-highlight"> "__main__": # Test cases assert timeToEat("2:00 p.m.") </span> [5, 0] assert timeToEat("5:50 a.m.") <span class="text-highlight"> [1, 10] assert timeToEat("7:00 a.m.") </span> [5, 0] # Right at breakfast, next is lunch assert timeToEat("11:30 a.m.") <span class="text-highlight"> [0, 30] assert timeToEat("8:00 p.m.") </span> [11, 0] # After dinner, next is tomorrow's breakfast print("All test cases passed!")

Output