Clock Angle Problem | Algorithms

Clock Angle Problem | Algorithms

Objec­tive: Find the Angle between hour hand and minute hand at the given time.

Exam­ple:

Time : 12:45  Input : hour = 12, Minute = 45  Output : 112.5         Time : 3:30  Input : hour = 3, Minute = 30  Output : 75  

 

• Approach:
• At 12:00 both hand meet, take it as reference.
• Angle between hand and minute = angle of hour hand ~ angle of minute hand.
• return minimum(angle, 360-angle)
• hour hand moves 360 in 12 hours => 360/12 = 30 degree in one hour or 0.5 degree in 1 min
• Minute hand moves 360 in 60 mins => 360/60 = 6 degree in one min
• So if given time is h hours and m mins, hour hand will move (h*60+m)*0.5 and minute hand will move 6*m

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