Angle Between Hands of a Clock

数学题, 首先统一单位, 然后再计算, 注意转圈.

class Solution {
    public double angleClock(int hour, int minutes) {
        double a1 = 360 * (minutes / 60.0);
        double a2 = 360 * (hour / 12.0) + 30 * (minutes / 60.0);
        return Math.abs(a1 - a2) <= 180.0 ? Math.abs(a1 - a2): 360 - Math.abs(a1 - a2);
    }