Angle Between Hands of a Clock

Description

Given two numbers, hour and minutes. Return the smaller angle (in degrees) formed between the hour and the minute hand.

 

Example 1:

Input: hour = 12, minutes = 30
Output: 165

Example 2:

Input: hour = 3, minutes = 30
Output: 75

Example 3:

Input: hour = 3, minutes = 15
Output: 7.5

Example 4:

Input: hour = 4, minutes = 50
Output: 155

Example 5:

Input: hour = 12, minutes = 0
Output: 0

 

Constraints:

• 1 <= hour <= 12
• 0 <= minutes <= 59
• Answers within 10^-5 of the actual value will be accepted as correct.

Solution(javascript)

/**
 * @param {number} hour
 * @param {number} minutes
 * @return {number}
 */
const angleClock = function (hour, minutes) {
  const hourAngle = ((hour % 12) + minutes / 60) / 12 * 360
  const minuteAngle = (minutes / 60) * 360
  const diff = Math.abs(hourAngle - minuteAngle)
  return Math.min(diff, 360 - diff)
}