Java中math方法的使用
/*
public static double abs(double num);获取绝对值
public static double ceil(double num);向上取整
public static double floor(double num);向下取整
public static long round(double num);四舍五入
*/
/*
public static double abs(double num);获取绝对值
public static double ceil(double num);向上取整
public static double floor(double num);向下取整
public static long round(double num);四舍五入
*/